CN206309659U - The force self-balanced centrifugal pump of integral type rotor axial and terminal - Google Patents

Abstract

The utility model is related to pump technical field is centrifuged, and in particular to a kind of force self-balanced centrifugal pump of integral type rotor axial and terminal, with the problem for alleviating abrasion, fluid leakage and service life of equipment are not grown.Including the pump housing, impeller, rotor, pump shaft, bearing and separation sleeve.Separation sleeve is covered on rotor and impeller outside；Separation sleeve has the hollow boss for stretching into rotor cavity, and pump shaft stretches into hollow boss；Bearing is located in cavity, is set on pump shaft, and can be slided along pump shaft, and bearing formed chute between the end of impeller and rotor；Also there is first fluid loop and second fluid loop.When axial force points to the pump housing, the conducting of first fluid loop, second fluid circuit closed, when axial force points to separation sleeve, first fluid circuit closed, the conducting of second fluid loop.Thus impeller is in self-balancing state all the time.The technical solution of the utility model can reduce abrasion, reduce the service life of fluid leakage and extension centrifugal pump.

Description

The force self-balanced centrifugal pump of integral type rotor axial and terminal

Technical field

The utility model is related to pump technical field is centrifuged, more particularly, to a kind of force self-balanced centrifugation of integral type rotor axial Pump and terminal.

Background technology

Centrifugal pump is a kind of centrifugal force produced when being rotated by impeller conveys the pump of liquid, and centrifugal pump is in the industrial production Extensive utilization is obtained.The structure description of centrifugal pump of the prior art is as follows：The pump housing and impeller are included, impeller is installed on Pump housing inner chamber, the pump housing has pump housing water inlet and a pump housing delivery port, and impeller has impeller water inlet and an impeller delivery port, fluid from Pump housing water inlet enters impeller water inlet, and flows out to pump chamber from the impeller delivery port, and is flowed out by pump housing delivery port.

For example, as shown in figure 1, impeller water inlet end is provided with impeller port ring 2 ', in pump housing inner chamber with respect to impeller port ring 2 ' Inwall be provided with pump housing choma 1 ', the choma 3 ' after the rotor exterior of impeller opposite side is arranged with impeller, after relative impeller The position of choma 3 ' is provided with dividing plate 4 ', when the axial force that impeller is subject to points to right side, by choma 3 ' after impeller and dividing plate The axial force on the right side of pointing to is offset in friction between 4 ', when the axial force that impeller is subject to points to left side, by impeller port ring 2 ' The axial force on the left of pointing to is offset in friction between pump housing choma 1 '.The axial force of impeller is by impeller port ring 2 ' and the pump housing mouthful Frictional force after ring 1 ', or impeller between choma 3 ' and dividing plate 4 ' is offset, thus abrasion is very fast, and the life-span is shorter.

Again for example, as shown in Fig. 2 in order to offset the axial force in impeller rotary course, being set near rotor side in impeller Choma 6 ' after impeller is equipped with, thrust ring 5 ' is arranged with the outside of the sliding bearing of pump shaft, choma 6 ' is for offsetting part after impeller Axial force, thrust ring 5 ' for offsetting another part axial force, but under different operating modes thrust ring 5 ' axial force size, side To inconsistent, the abrasion condition of friction pair is whard to control, service life is unstable.

Thus, axial force of the impeller of centrifugal pump in motion process how is preferably offset, to reduce abrasion, reduce stream Body leaks and improve service life of equipment turns into people's technical problem urgently to be resolved hurrily.

Utility model content

The purpose of this utility model is to provide a kind of force self-balanced centrifugal pump of integral type rotor axial and terminal, to alleviate Abrasion of the impeller of centrifugal pump present in prior art in motion process, fluid leakage and service life of equipment be not long Problem.

The utility model provides following technical scheme：

A kind of force self-balanced centrifugal pump of integral type rotor axial, including the pump housing, impeller, rotor, pump shaft, bearing and isolation Set；

Impeller water inlet is provided with impeller port ring, and pump housing inwall is provided with and the matching used pump housing of the impeller port ring Choma, the impeller port ring and the impeller synchronous rotary, and under the drive of the impeller along its axis direction movement beating Open or close the fluid passage between the impeller port ring and the pump housing choma；The rotor connects with the end of the impeller Connect, and with the cavity for accommodating the pump shaft and the bearing, the rotor is provided with through hole near the impeller side, The pump shaft is through the through hole and enters the cavity；The separation sleeve is covered on the rotor and impeller outside；Institute Stating separation sleeve has the hollow boss for stretching into the rotor cavity, and the pump shaft stretches into the hollow boss；The bearing is located at In the cavity, it is set on the pump shaft, and can be slided along the pump shaft, the bearing is near the end of the impeller and institute State and formed chute between rotor.

Flowed out from impeller delivery port after fluid is from impeller water inlet into impeller inner chamber, flow through impeller in a clockwise direction Gap between separation sleeve, flow into rotor internal cavity and passed through chute and be back to impeller inner chamber to form first fluid loop；

Flowed out from impeller delivery port after fluid is from impeller water inlet into impeller inner chamber, flow through impeller in a counterclockwise direction Gap between choma and pump housing choma, and it is back to impeller water inlet formation second fluid loop；

In the course of the work,

When the axial force that impeller is subject to points to the pump housing, impeller is moved to pump housing direction, the conducting of first fluid loop, second Fluid circuit is closed, and the pressure for acting on impeller in second fluid loop gradually increases, and the axial force of the pump housing is pointed to balance；

When the axial force that impeller is subject to points to separation sleeve, impeller is moved to separation sleeve direction, first fluid circuit closed, Second fluid loop is turned on, and the pressure for acting on impeller in first fluid loop gradually increases, and separation sleeve is pointed to balance Axial force.

Further,

In the course of work, impeller has first position and the second place,

The impeller be located at first position when, the impeller port ring is separated with the pump housing choma, it is described cross chute by The shaft seal, the second fluid loop conducting, the first fluid circuit closed；

When the impeller is located at the second place, the impeller port ring offsets with the pump housing choma, and the chute excessively Conducting, the first fluid loop conducting, the second fluid circuit closed；

Any position described in driving force effect lower edge of the impeller in fluid between first position and the second place is moved It is dynamic.

Further,

The gap of vertical direction is the first gap between the impeller and the separation sleeve, and the rotor is near the impeller Corner regions and the separation sleeve between gap be the second gap, between the rotor and the separation sleeve between horizontal direction Gap is third space, the rotor away from vertical direction between the end of the impeller and the separation sleeve gap between the 4th Gap；Gap between the bearing and the rotor internal cavity is the 5th gap；

When first fluid loop turns on, fluid flow through successively the first gap, the second gap, third space, the 4th gap, 5th gap and excessively chute.

Further,

The impeller and the rotor integrally connected.

Further,

The pump shaft is set to hemispherical dome structure in the end near the impeller, for when first fluid loop turns on Facilitate fluid to pass through, and avoid rotor stuck during being moved along its axis direction.

Further,

Through hole internal diameter, the bearing bore diameter and the pump shaft external diameter that the rotor is close to described impeller one end are equal.

A kind of terminal of force self-balanced centrifugal pump of integral type rotor axial in above-mentioned technical proposal, includes：Ginseng Number setting module, three-dimensional modeling module, simulation analysis module and discriminatory analysis module；

The parameter setting module is used for：Default each part position relations, fluid flow state and impeller motion process In cross ebb interval between each part；

The three-dimensional modeling module is used for：According between each part position relations, fluid flow state and each part Cross ebb interval and set up threedimensional model；

The simulation analysis module is used for：The axial force size of simulation software analyzing three-dimensional model and direction, and obtain axle To power size data and bearing data；

The discriminatory analysis module is used for：Judge the axial force size data and bearing data whether in preset range Interior, when the axial force size data or bearing data exceed preset range, judgement re-starts three-dimensional modeling step, and adjusts Ebb interval is crossed between whole each part position relations or each part；It is located in the axial force size data or bearing data default In the range of when, judge each part position relations, between fluid flow state and each part to cross ebb interval qualified.

Further,

Each part includes：The pump housing, impeller, rotor, pump shaft, sliding bearing, separation sleeve, impeller port ring and pump housing choma.

Further,

The ebb interval of crossing includes the first gap, the second gap, third space, the 4th gap, the 5th gap and mistake Chute.

Further,

The simulation software is ANSYS analysis softwares.

With reference to above technical scheme, because the utility model provides a kind of force self-balanced centrifugation of integral type rotor axial Pump, including the pump housing, impeller, rotor, pump shaft, bearing and separation sleeve.In the course of the work, when the axial force that rotor is subject to points to pump During body, rotor is moved to pump housing direction, the conducting of first fluid loop, second fluid circuit closed, the work in second fluid loop Pressure for impeller gradually increases, and the axial force of the pump housing is pointed to balance.When the axial force that rotor is subject to points to separation sleeve, Rotor is moved to separation sleeve direction, first fluid circuit closed, the conducting of second fluid loop, acting in first fluid loop The pressure of impeller gradually increases, and the axial force of separation sleeve is pointed to balance.Due in first fluid loop and second fluid loop Fluid matasomatism the axial force of impeller can be balanced in the pressure of impeller surface,

Impeller in the course of the work, due to the presence in first fluid loop and second fluid loop, first fluid loop and , in the axial force of the pressure equilibrium impeller of impeller surface, impeller is in self-balancing shape all the time for fluid matasomatism in second fluid loop State, thus the abrasion of impeller port ring of the prior art and pump housing choma all the time caused by the contact condition can be reduced ask Topic, and reduce the wear problem of thrust ring.In addition, from impeller delivery port outflow fluid through first fluid loop or second Body loop is back to impeller inner chamber, thus can effectively reduce fluid leakage.

To sum up, the force self-balanced centrifugal pump of integral type rotor axial that the utility model is provided can reduce abrasion, reduce stream Body leaks and extends the service life of centrifugal pump.

Brief description of the drawings

In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below In accompanying drawing be some implementation methods of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of structural representation of centrifugal pump present in prior art；

Fig. 2 is the structural representation of another centrifugal pump present in prior art；

The structural representation of the centrifugal pump that Fig. 3 is provided for the utility model embodiment；

First gap of the centrifugal pump that Fig. 4 is provided for the utility model embodiment, the second gap, between third space, the 4th The schematic diagram of gap, the 5th gap and mistake chute；

Structural representation of the centrifugal pump that Fig. 5 is provided for the utility model embodiment when second fluid loop turns on；

Structural representation of the centrifugal pump that Fig. 6 is provided for the utility model embodiment when first fluid loop turns on.

Icon：1 '-pump housing choma；2 '-impeller port ring；Choma after 3 '-impeller；4 '-dividing plate；5 '-thrust ring； Choma after 6 '-impeller；The 1- pump housings；2- impellers；3- rotors；4- pump shafts；5- bearings；6- separation sleeves；7- impeller port rings； 8- pump housing chomas；21- impeller water inlets；22- impeller delivery ports；The gaps of 91- first；The gaps of 92- second；93- the 3rd Gap；The gaps of 94- the 4th；The gaps of 95- the 5th；96- crosses chute.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

It is term " " center ", " on ", D score, "left", "right", " perpendicular, it is necessary to explanation in description of the present utility model Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " are, based on orientation shown in the drawings or position relationship, to be only Described with simplified for the ease of description the utility model, must had rather than the device or element for indicating or implying meaning specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.

, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Can be two connections of element internal.For the ordinary skill in the art, can understand that term exists with concrete condition Concrete meaning in the utility model.

Embodiment 1 and embodiment 2 are described in detail below in conjunction with the accompanying drawings：

Fig. 1 is a kind of structural representation of centrifugal pump present in prior art；Fig. 2 is another present in prior art Plant the structural representation of centrifugal pump；The structural representation of the centrifugal pump that Fig. 3 is provided for the utility model embodiment；Fig. 4 is this reality With new embodiment provide centrifugal pump on the first gap, the second gap, third space, the 4th gap, the 5th gap with And cross the schematic diagram of chute；Structure of the centrifugal pump that Fig. 5 is provided for the utility model embodiment when second fluid loop turns on Schematic diagram；Structural representation of the centrifugal pump that Fig. 6 is provided for utility model the present embodiment when first fluid loop turns on.

Embodiment 1

Please with reference to Fig. 3-Fig. 6, a kind of force self-balanced centrifugal pump of integral type rotor axial is present embodiments provided, including The pump housing 1, impeller 2, rotor 3, pump shaft 4, bearing 5 and separation sleeve 6, specifically：

Impeller port ring 7 is provided with impeller water inlet 21, the inwall of the pump housing 1 is provided with and the matching used pump of impeller port ring 7 Body choma 8, impeller port ring 7 and the synchronous rotary of impeller 2, and under the drive of impeller 2 along its axis direction movement opening or Fluid passage between closure impeller port ring 7 and pump housing choma 8；Rotor 3 is connected with the end of impeller 2, and with for accommodating The cavity of pump shaft 4 and bearing 5, rotor 3 is provided with through hole near the side of impeller 2, and pump shaft 4 is through through hole and enters cavity；Isolation Set 6 is covered on rotor 3 and the outside of impeller 2；Separation sleeve 6 has the hollow boss for stretching into the cavity of rotor 3, and pump shaft 4 stretches into hollow convex Platform；Bearing 5 is located in cavity, is set on pump shaft 4, and can be slided along pump shaft 4, and bearing 5 is near the end of impeller 2 and rotor 3 Between formed chute 96.

Flowed out from impeller delivery port 22 after fluid is from impeller water inlet 21 into 2 inner chamber of impeller, flowed in a clockwise direction The gap crossed between impeller 2 and separation sleeve 6, flow into the inner chamber of rotor 3 and passed through chute 96 and be back to the inner chamber of impeller 2 to form first Fluid circuit.

Flowed out from impeller delivery port 22 after fluid is from impeller water inlet 21 into 2 inner chamber of impeller, flowed in a counterclockwise direction The gap crossed between impeller port ring 7 and pump housing choma 8, and it is back to the formation second fluid of impeller water inlet 21 loop.

Due to the presence in first fluid loop and second fluid loop, the stream in first fluid loop and second fluid loop Body acts on the axial force of the pressure equilibrium impeller 2 on the surface of impeller 2, and impeller 2 is in self-balancing state all the time, thus can reduce Impeller port ring of the prior art 7 and pump housing choma 8 are all the time in the wear problem caused by contact condition, and reduce thrust The wear problem of ring.In addition, the fluid from the outflow of impeller delivery port 22 is back to through first fluid loop or second fluid loop The inner chamber of impeller 2, thus can effectively reduce fluid leakage.

To sum up, the force self-balanced centrifugal pump of integral type rotor axial that the utility model is provided can reduce abrasion, reduce stream Body leaks and extends the service life of centrifugal pump.

It should be noted that：Impeller 2 has first position and the second place, driving force effect lower edge of the impeller 2 in fluid Any position movement between first position and the second place.When impeller 2 is located at first position, impeller port ring 7 and the pump housing mouthful Ring 8 is separated, and is crossed chute 96 and is sealed by pump shaft 4, the conducting of second fluid loop, first fluid circuit closed；Second is located in impeller 2 During position, impeller port ring 7 is offseted with pump housing choma 8, and chute 96 excessively is turned on, the conducting of first fluid loop, second fluid loop Closure.

In the alternative of the present embodiment, first fluid loop has the first gap 91, the second gap 92, third space 93rd, the 4th gap 94, the 5th gap 95 and mistake chute 96, specifically：

Between impeller 2 and separation sleeve 6 gap of vertical direction be the first gap 91, rotor 3 near impeller 2 corner regions with Gap between separation sleeve 6 is the second gap 92, and the gap of horizontal direction is third space 93 between rotor 3 and separation sleeve 6, is turned Son 3 is the 4th gap 94 away from the gap of vertical direction between the end of impeller 2 and separation sleeve 6；Bearing 5 and the inner chamber of rotor 3 it Between gap be the 5th gap 95；When first fluid loop turns on, fluid flow through successively the first gap 91, the second gap 92, Third space 93, the 4th gap 94, the 5th gap 95 and mistake chute 96.

It should be noted that refer to accompanying drawing 5 and accompanying drawing 6, below for convenience, the first gap 91 is A areas, second Gap 92 is B areas, and third space 93 is C areas, and the gap between impeller 2 and the pump housing 1 in second fluid loop is D areas.

When the axial force that impeller 2 is subject to points to the pump housing 1, impeller 2 is moved to the direction of the pump housing 1, and first fluid loop is gradually Conducting, second fluid loop gradually closes, and A areas, B areas, the pressure for acting on the surface of impeller 2 in C areas are gradually reduced, the effect of D areas Pressure in the surface of impeller 2 gradually increases, and D areas act on the pressure on the surface of impeller 2 and can gradually balance axle suffered by impeller 2 Xiang Li, so that impeller 2 is in stress balance state.

When the axial force that impeller 2 is subject to points to separation sleeve 6, impeller 2 is moved to the direction of separation sleeve 6, first fluid loop Gradually close, second fluid loop is gradually turned on, A areas, B areas, the pressure for acting on the surface of impeller 2 in C areas gradually increase, D areas The pressure for acting on the surface of impeller 2 is tapered into, and the pressure in A areas, B areas and C areas can gradually balance axial direction suffered by impeller 2 Power, so that impeller 2 is in stress balance state.

Also, it should be noted that high-pressure fluid is formed by A areas being depressured for the first time, the gap in A areas is preferably arranged to 0.5- 5mm.Fluid after first time is depressured carries out second step-down by B areas, and the gap in B areas is preferably arranged to 0.1-2mm.Through The fluid crossed after second step-down carries out third time step-down by C areas, the fall of third time step-down than step-down for the first time and The fall of second step-down is small, and C intervals gap is preferably arranged to 0.5-3mm.

In the alternative of the present embodiment, impeller 2 and the integrally connected of rotor 3.In the prior art, impeller 2 and the split of rotor 3 Connection, thus there is efficiency loss problem.The mode of integrally connected can improve the work of impeller 2 on the premise of fastness is ensured Efficiency.

In the alternative of the present embodiment, pump shaft 4 being set to hemispherical dome structure near the end of impeller 2, for the One fluid circuit facilitates fluid to pass through when turning on, and avoids rotor 3 stuck during being moved along its axis direction.

In addition, it is necessary to illustrate, the utility model is eliminated on pump shaft 4 on the basis of the centrifugal pump of prior art The setting (nuts at the two ends of pump shaft 4 in such as Fig. 2) of nut, completely eliminates the problem that nut of the prior art comes off, extension The service life of centrifugal pump.

Embodiment 2

Present embodiments provide a kind of controlling party of the axial force self-balancing structure of integral type rotor 3 in embodiment 1 Method, comprises the following steps：

Parameter setting：Preset each part position relations, fluid flow state and in the motion process of impeller 2 between each part Cross ebb interval；

Three-dimensional modeling：Set up according to the ebb interval of crossing between each part position relations, fluid flow state and each part Threedimensional model；

Simulation analysis：The axial force size of simulation software analyzing three-dimensional model and direction, and obtain axial force size data And bearing data；

Discriminatory analysis：Whether within a preset range axial force size data and bearing data are judged, in the big decimal of axial force According to or bearing data exceed preset range when, judgement re-starts three-dimensional modeling step, and adjusts each part position relations or each Ebb interval is crossed between part；When axial force size data or bearing data are located in preset range, each component locations are judged Ebb interval excessively between relation, fluid flow state and each part is qualified.

In the alternative of the present embodiment,

Each part includes：The pump housing 1, impeller 2, rotor 3, pump shaft 4, sliding bearing 5, separation sleeve 6, impeller port ring 7 and pump Body choma 8.

In the alternative of the present embodiment,

Cross ebb interval and include the first gap 91, the second gap 92, third space 93, the 4th gap 94, the 5th gap 95 And cross chute 96.

In the alternative of the present embodiment,

Simulation software is ANSYS analysis softwares.

Embodiment 3

A kind of terminal for the force self-balanced centrifugal pump of integral type rotor axial is present embodiments provided, is included：Parameter Setting module, three-dimensional modeling module, simulation analysis module and discriminatory analysis module；

Parameter setting module is used for：It is each in default each part position relations, fluid flow state and the motion process of impeller 2 Ebb interval is crossed between part；

Three-dimensional modeling module is used for：According to the excessively stream between each part position relations, fluid flow state and each part Threedimensional model is set up in gap；

Simulation analysis module is used for：The axial force size of simulation software analyzing three-dimensional model and direction, and obtain axial force Size data and bearing data；

Discriminatory analysis module is used for：Whether within a preset range axial force size data and bearing data are judged, in axial direction When power size data or bearing data exceed preset range, judgement re-starts three-dimensional modeling step, and adjusts each component locations Ebb interval is crossed between relation or each part；When axial force size data or bearing data are located in preset range, judge each Ebb interval excessively between part position relations, fluid flow state and each part is qualified.

Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (6)

1. a kind of force self-balanced centrifugal pump of integral type rotor axial, it is characterised in that including the pump housing, impeller, rotor, pump shaft, axle Hold and separation sleeve；

Impeller water inlet is provided with impeller port ring, and pump housing inwall is provided with and the matching used pump housing mouthful of the impeller port ring Ring, the impeller port ring and the impeller synchronous rotary, and under the drive of the impeller along its axis direction movement opening Or the fluid passage between the closure impeller port ring and the pump housing choma；The rotor connects with the end of the impeller Connect, and with the cavity for accommodating the pump shaft and the bearing, the rotor is provided with through hole near the impeller side, The pump shaft is through the through hole and enters the cavity；The separation sleeve is covered on the rotor and impeller outside；Institute Stating separation sleeve has the hollow boss for stretching into the rotor cavity, and the pump shaft stretches into the hollow boss；The bearing is located at In the cavity, it is set on the pump shaft, and can be slided along the pump shaft, the bearing is near the end of the impeller and institute State and formed chute between rotor；

After fluid is from impeller water inlet into impeller inner chamber from impeller delivery port outflow, flow through in a clockwise direction impeller with every Gap between set, flow into rotor internal cavity and passed through chute and be back to impeller inner chamber to form first fluid loop；

Flowed out from impeller delivery port after fluid is from impeller water inlet into impeller inner chamber, flow through impeller port ring in a counterclockwise direction And the gap between pump housing choma, and it is back to impeller water inlet formation second fluid loop.

2. the force self-balanced centrifugal pump of integral type rotor axial according to claim 1, it is characterised in that：In the course of work, Impeller has first position and the second place,

When the impeller is located at first position, the impeller port ring is separated with the pump housing choma, and the chute of crossing is by described Shaft seal, the second fluid loop conducting, the first fluid circuit closed；

When the impeller is located at the second place, the impeller port ring is offseted with the pump housing choma, and the chute of crossing is turned on, The first fluid loop conducting, the second fluid circuit closed；

Any position movement described in driving force effect lower edge of the impeller in fluid between first position and the second place.

3. the force self-balanced centrifugal pump of integral type rotor axial according to claim 2, it is characterised in that：

The gap of vertical direction is the first gap between the impeller and the separation sleeve, and the rotor turns near the impeller Gap between angular region and the separation sleeve is the second gap, and the gap of horizontal direction is between the rotor and the separation sleeve Third space, the rotor is the 4th gap away from the gap of vertical direction between the end of the impeller and the separation sleeve； Gap between the bearing and the rotor internal cavity is the 5th gap；

When first fluid loop turns on, fluid flows through the first gap, the second gap, third space, the 4th gap, the 5th successively Gap and excessively chute.

4. the force self-balanced centrifugal pump of integral type rotor axial according to claim 3, it is characterised in that：

The impeller and the rotor integrally connected.

5. the force self-balanced centrifugal pump of integral type rotor axial according to claim 4, it is characterised in that：The pump shaft is being leaned on The end of the nearly impeller is set to hemispherical dome structure, for facilitating fluid to pass through when first fluid loop turns on, and keeps away Exempt from rotor stuck during being moved along its axis direction.

6. the force self-balanced centrifugal pump of integral type rotor axial according to claim 5, it is characterised in that：

Through hole internal diameter, the bearing bore diameter and the pump shaft external diameter that the rotor is close to described impeller one end are equal.