CN206668563U - Multistage middle open pump - Google Patents
Multistage middle open pump Download PDFInfo
- Publication number
- CN206668563U CN206668563U CN201720357698.1U CN201720357698U CN206668563U CN 206668563 U CN206668563 U CN 206668563U CN 201720357698 U CN201720357698 U CN 201720357698U CN 206668563 U CN206668563 U CN 206668563U
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- China
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- impeller
- pump
- water conservancy
- conservancy diversion
- pump housing
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Abstract
The utility model discloses a kind of multistage middle open pump, including pump shaft；Impeller, the impeller suit are fixed on the pump shaft；The pump housing provided with flow channels, the pump housing are set in the outside of the pump shaft, and the impeller is located in the flow channels, and the inwall of the impeller and the pump housing cooperatively forms accommodating cavity；And water conservancy diversion lining, the water conservancy diversion lining is arranged on the pump housing and in the accommodating cavity, and water conservancy diversion lining abuts cooperation with inwall, the impeller of the pump housing.So, when impeller rotates with pump shaft, because the buffer action of water conservancy diversion lining can avoid the pump housing and the fretting wear of the direct relative motion of impeller generation, can also reduce flow media washes away the galling to be formed to impeller simultaneously, so as to be advantageous to be lifted the service life of whole pump and operational efficiency and stability, it additionally can make whole pump that there is excellent conservancy property, avoid that liquid stream disorder occurs.
Description
Technical field
Medium conveying technology field is the utility model is related to, more particularly to a kind of multistage middle open pump.
Background technology
Middle-opening pump is used for the advantages that pumped (conveying) medium flow that it has is big, service life is long, transfer efficiency is high, extensively should
For oil, chemical industry, electric power metallurgy, mine, ship, light industry, agricultural, civilian and national defence all departments are selected, occupied in national economy
Consequence.Divided according to performance and structure, middle-opening pump includes single-stage, twin-stage and multiple-stage type.But in the above-mentioned type
Turn on pump is generally all made up of parts such as the pump housing, impeller, pump shaft, sealing rings.Wherein, the pump housing and impeller generally use casting
Mode forms flow channels, and medium flows into suction eye by the flow channels of the pump housing, is finally pumped away.But cast
The pump housing and impeller of shaping itself unavoidable presence casting flaw and error, cause that in mutual rotate larger rub can be produced
Scouring is damaged, while washing away for medium can also cause galling to impeller, so be will be unable to ensure the conservancy property of the pump housing, is caused
Media flow is disorderly, influences the operational efficiency and stability of whole pump.
Utility model content
Based on this, the utility model is necessary to provide a kind of multistage middle open pump, can reduce rubbing between the pump housing and impeller
The galling of scouring damage and medium to impeller, it is ensured that whole pump has excellent performance, lifted whole pump operational efficiency,
Stability and service life.
Its technical scheme is as follows：
A kind of multistage middle open pump, including：
Pump shaft；
Impeller, the impeller suit are fixed on the pump shaft；
The pump housing provided with flow channels, the pump housing are set in the outside of the pump shaft, and the impeller is located at the excessively stream
In passage, and the inwall of the impeller and the pump housing cooperatively forms accommodating cavity；And
Water conservancy diversion is served as a contrast, and the water conservancy diversion lining is arranged on the pump housing and in the accommodating cavity, and water conservancy diversion lining and institute
State the inwall of the pump housing, the impeller abuts cooperation.
The pump housing is set on pump shaft by being set with fixed impeller on pump shaft and is located at impeller by above-mentioned multistage middle open pump
In flow channels, while make to cooperatively form accommodating cavity between impeller and the inwall of the pump housing；Water conservancy diversion lining is installed on the pump housing afterwards
It is located in accommodating cavity, now water conservancy diversion lining abuts with the inwall and impeller of the pump housing.In this way, when impeller rotates with pump shaft,
Because the buffer action of water conservancy diversion lining can avoid the pump housing and the fretting wear of the direct relative motion of impeller generation, while can also reduce
Flow media washes away the galling to be formed to impeller, so as to be advantageous to be lifted the service life of whole pump and operational efficiency and steady
It is qualitative, it additionally can make whole pump that there is excellent conservancy property, avoid that liquid stream disorder occurs.
Technical scheme is further described below：
In one of the embodiments, the water conservancy diversion is lined with diversion division, and the diversion division is enclosed located at the outer of the pump shaft
Week, and the diversion division seamlessly transits along the bearing of trend of flow channels.Thus enclosed by the diversion division for serving as a contrast water conservancy diversion located at pump
The periphery of axle, and ensure that diversion division seamlessly transits along the bearing of trend of flow channels, it so may insure the liquid guide flow of pumping
Fluidization enters flow channels under the guide function in portion, reduces liquid flowing resistance, there is provided pumping efficiency.
In one of the embodiments, in addition to first seal, the direction of inwall to the pump shaft of the pump housing are convex
Boss is connect provided with gear, the water conservancy diversion is lined with free end, and the free end is arranged with seal groove, and the first seal is embedded at
In the seal groove and boss is connect with the gear to abut.Water conservancy diversion can so served as a contrast and realizes excellent sealing between the pump housing, avoids
The liquid of pumping leaks, and influences the pumping efficiency and service life of whole pump.
In one of the embodiments, the side that the gear connects boss is arranged with location indentations, the free end convex
Provided with position block, the position block and the spacing cooperation of the location indentations.Carried out when can thus realize water conservancy diversion lining installation
Positioning, be advantageous to improve the installation accuracy and convenience of water conservancy diversion lining.
In one of the embodiments, cooperatively formed between the water conservancy diversion lining and the inwall of the pump housing for reducing the pump housing
The toroidal cavity of weight.The wall thickness of the pump housing can be so substantially reduced, and then is advantageous to mitigate the gross weight of whole pump, while may be used also
Consumptive material is manufactured to reduce, lifts economy.
In one of the embodiments, the water conservancy diversion lining, which is additionally provided with, avoids convex portion, and the convex portion that avoids is to the pump shaft
Direction extends and coordinated with the impeller clearance.Thus by water conservancy diversion lining design to pump shaft direction extend avoidance convex portion,
And avoidance convex portion is coordinated with impeller clearance, it can not only avoid that fretting wear occurs during wheel rotation, while formed long and narrow
Gap may also function as certain sealing gland effect, be advantageous to lift the sealing property between water conservancy diversion lining and impeller.
In one of the embodiments, in addition to stop collar and second seal, the water conservancy diversion lining are additionally provided with limit notch,
The periphery wall of the stop collar is provided with the stopper protrusion being adapted to the limit notch, and the internal perisporium of the stop collar is provided with first
Step, the impeller are provided with the second step relative with the first step, the limit convex towards the side that the water conservancy diversion serves as a contrast
Portion and the spacing cooperation of the limit notch, the second seal are located between the first step and the second step.
The limit notch for thus serving as a contrast water conservancy diversion abuts cooperation with the stopper protrusion of stop collar while makes the first step and impeller of stop collar
Second step relative abut, it is possible to achieve the installation of stop collar is fixed, and second seal is located in into first on this basis
Between step and second step, it is ensured that water conservancy diversion serves as a contrast the assembling sealing between impeller, avoids that pump liquid leakage occurs
And influence pumping efficiency.
In one of the embodiments, the internal perisporium of the stop collar is provided with least two described first in ladder arrangement
Step, the impeller be provided with ladder arrangement at least two second steps, all first steps with it is all described
Second step corresponds relatively, and the quantity at least two of the second seal, and the second seal corresponds
Ground is located between the first step and the second step.Thus by least two first steps arranged in ladder with
At least two second steps, correspond clamping with least two second seals and cooperatively form labyrinth seal structure, can be with
The sealing reliability between impeller and water conservancy diversion lining is further lifted, and then lifts the performance of whole pump.
In one of the embodiments, in addition to the impeller positioning sleeve being fixed on the pump shaft is set with, the impeller
Quantity at least two, at least two impellers are located at the both sides of the impeller positioning sleeve, and the impeller positioning sleeve respectively
Conduction part is provided with away from the side of the pump shaft.Two neighboring institute in multistage middle open pump thus can be realized by impeller positioning sleeve
Being mutually located for impeller is stated, to ensure the safe to use and reliable of whole pump；In addition, set in impeller positioning sleeve away from the side of pump shaft
Conduction part is put, is advantageous to increase waterpower excessively stream shape, improves the whole efficiency of pump, while fairing air flowability can be played, is reduced
Pump vibration, noise.
In one of the embodiments, in addition to locking member, the water conservancy diversion lining are additionally provided with installation portion, and the installation portion is provided with
First pilot hole, the pump housing are provided with second pilot hole relative with first pilot hole, and the locking member is arranged in described
First pilot hole and second pilot hole.The first pilot hole and the second pilot hole are thus arranged in by locking member, are easy to reality
The installation of existing water conservancy diversion lining is fixed, and the connected mode is simple, is convenient to mount and dismount, and advantageously reduces manufacture and maintenance difficulty.
Brief description of the drawings
Fig. 1 is the structural representation of the multistage middle open pump described in the utility model embodiment；
Fig. 2 is the partial enlargement structural representation at the A of the multistage middle open pump described in the utility model embodiment；
Fig. 3 is the partial enlargement structural representation at the B of the multistage middle open pump described in the utility model embodiment；
Fig. 4 is the partial enlargement structural representation at the C of the multistage middle open pump described in the utility model embodiment.
Description of reference numerals：
100th, pump shaft, 200, impeller, 210, second step, 300, the pump housing, 310, flow channels, 320, gear connect boss,
321st, location indentations, 400, accommodating cavity, 500, water conservancy diversion lining, 510, diversion division, 520, free end, 521, seal groove, 522, positioning
Block, 530, avoid convex portion, 540, limit notch, 550, installation portion, 600, first seal, 700, toroidal cavity, 800, limit
Position set, 810, stopper protrusion, 820, first step, 900, second seal, 1000, impeller positioning sleeve, 1000a, conduction part,
1100th, locking member.
Embodiment
It is below in conjunction with accompanying drawing and specifically real for the purpose of this utility model, technical scheme and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be appreciated that embodiment described herein
Only to explain the utility model, the scope of protection of the utility model is not limited.
It should be noted that when element is referred to as " being fixedly arranged on ", " being arranged at " or " install in " another element, it can be with
Directly on another element or there may also be element placed in the middle.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements；One element and another element
The concrete mode being fixedly connected can be achieved by the prior art, and will not be repeated here, it is preferred to use the fixation side of threaded connection
Formula.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag
Include the arbitrary and all combination of the Listed Items of one or more correlations.
" first " described in the utility model, " second " do not represent specific quantity and order, are only used for title
Distinguish.
As depicted in figs. 1 and 2, a kind of multistage middle open pump of the embodiment shown for the utility model, including：Pump shaft 100；
Impeller 200, the suit of impeller 200 are fixed on the pump shaft 100；The pump housing 300 provided with flow channels 310, the pump housing
300 are set in the outside of the pump shaft 100, and the impeller 200 is located in the flow channels 310, and the impeller 200 and institute
The inwall for stating the pump housing 300 cooperatively forms accommodating cavity 400；And water conservancy diversion lining 500, the water conservancy diversion lining 500 are arranged on the pump housing 300
And in the accommodating cavity 400, and water conservancy diversion lining 500 is abutted and matched somebody with somebody with inwall, the impeller 200 of the pump housing 300
Close.
The pump housing 300 is set on pump shaft 100 by above-mentioned multistage middle open pump by being set with fixed impeller 200 on pump shaft 100
And impeller 200 is located in flow channels 310, while make to cooperatively form accommodating cavity between the inwall of impeller 200 and the pump housing 300
400；Water conservancy diversion lining 500 is installed on the pump housing 300 afterwards and is located in accommodating cavity 400, now water conservancy diversion lining 500 and the pump housing 300
Inwall and impeller 200 abut.In this way, when impeller 200 rotates with pump shaft 100, because the buffer action of water conservancy diversion lining 500 can
To avoid the pump housing 300 and impeller 200 that the fretting wear of direct relative motion occurs, while it can also reduce flow media to impeller
200 wash away the galling to be formed, so as to be advantageous to be lifted the service life of whole pump and operational efficiency and stability, additionally
It can make whole pump that there is excellent conservancy property, avoid that liquid stream disorder occurs.
In the above-described embodiments, the end of pump shaft 100 is connected with motor, and pump shaft 100 and motor are connected
Bearing housing is installed, service life when being rotated in order to ensure the long-time size of pump shaft 100, using quiet in bearing housing outside part
The mode that sealing and Dynamic Seal combination use, i.e., directly cover solid movable sealing sleeve in the outside of pump shaft 100, and movable sealing sleeve passes through screw
Fastening and pump shaft 100, O-ring seal is additionally provided between movable sealing sleeve and pump shaft 100, avoids lubricating oil, fat from revealing to reach；It
After afterwards by static seal gland Matching installation outside movable sealing sleeve.
Fig. 2 is refer to, in one embodiment, the water conservancy diversion lining 500 is provided with diversion division 510, and the diversion division 510, which encloses, to be set
In the periphery of the pump shaft 100, and bearing of trend of the diversion division 510 along flow channels 310 seamlessly transits.Thus by making
The diversion division 510 of water conservancy diversion lining 500 is enclosed located at the periphery of pump shaft 100, and ensures extension side of the diversion division 510 along flow channels 310
To seamlessly transitting, so may insure pumping liquid under the guide function of diversion division 510 fluidization enter flow channels
310, reduce liquid flowing resistance, there is provided pumping efficiency.Specifically, water conservancy diversion lining 500 is the ring body that section is irregular shape, ring
The internal ring wall of body is close to the design of the porch of flow channels 310 in the diversion division 510 of cambered surface, the arc angle and pump of diversion division 510
The liquid flow path direction sent is tangent, thus resistance is small, and guide function is good, can so avoid liquid stream and water conservancy diversion serve as a contrast 500 frontal collisions and
Produce noise or cause the vibration of whole pump.
Further, above-mentioned multistage middle open pump also includes first seal 600, and the inwall of the pump housing 300 is to the pump
The direction of axle 100 is convexly equipped with gear and connects boss 320, and the water conservancy diversion lining 500 is provided with free end 520, and the free end 520 is arranged with close
Sealing groove 521, the first seal 600 are embedded in the seal groove 521 and connect boss 320 with the gear and abut.So may be used
So as to realize excellent sealing between water conservancy diversion lining 500 and the pump housing 300, avoid the liquid of pumping from leaking, influence the pumping of whole pump
Efficiency and service life.Specifically, first seal 600 can be O-ring seal, oil sealing, sealing gasket etc., the present embodiment is preferred
It is O-ring seal, and the thickness of O-ring seal is more than the depth of seal groove 521, thus when O-ring seal is embedded in groove
An extended part, and then when the free end 520 of water conservancy diversion lining 500 connects boss 320 with gear and abutted, pass through the deformation of extension
Good sealing function can be formed.
Further, it is described keep off connect boss 320 side (away from water conservancy diversion lining 500 side) be arranged with location indentations
321, the convex of free end 520 is provided with position block 522, the position block 522 with the location indentations 321 are spacing matches somebody with somebody
Close.Positioned when can thus realize water conservancy diversion 500 installation of lining, be advantageous to improve the installation accuracy and convenience of water conservancy diversion lining 500.
In addition, cooperatively formed between the water conservancy diversion lining 500 and the inwall of the pump housing 300 for reducing the weight of the pump housing 300
Toroidal cavity 700.Specifically, toroidal cavity 700 is the cavity of annular, the wall thickness of the pump housing 300 can be so substantially reduced,
And then be advantageous to mitigate the gross weight of whole pump, while manufacture consumptive material can also be reduced, lift economy.
As shown in Fig. 2 further, the water conservancy diversion lining 500, which is additionally provided with, avoids convex portion 530, and the convex portion 530 that avoids is to institute
State the direction extension of pump shaft 100 and coordinate with the gap of impeller 200.Thus by being designed on water conservancy diversion lining 500 to pump shaft 100
The avoidance convex portion 530 of direction extension simultaneously makes avoidance convex portion 530 coordinate with the gap of impeller 200, can not only avoid 200 turns of impeller
Fretting wear occurs when dynamic, while the long and narrow gap formed may also function as certain sealing gland effect, be advantageous to lift water conservancy diversion lining 500
With the sealing property between impeller 200.Wherein, avoid convex portion 530 preferably to link up smoothly with above-mentioned diversion division 510, and avoid convex portion
530 sides relative with impeller 200 are facing directly of being parallel to each other, or the waveform face for male-female engagement, are meeting diversion division
While 510 sufficient lengths preferably flow backwards effect to realize, moreover it is possible to avoid water conservancy diversion lining 500 from being rubbed with impeller 200.
Fig. 2 and Fig. 4 are refer to, in addition, above-mentioned multistage middle open pump also includes stop collar 800 and second seal 900, it is described
Water conservancy diversion lining 500 is additionally provided with limit notch 540, and the periphery wall of the stop collar 800 is provided with the limit being adapted to the limit notch 540
Position convex portion 810, the internal perisporium of the stop collar 800 are provided with first step 820, and the impeller 200 serves as a contrast 500 towards the water conservancy diversion
Side is provided with the second step 210 relative with the first step 820, and the stopper protrusion 810 limits with the limit notch 540
Position coordinates, and the second seal 900 is located between the first step 820 and the second step 210.Thus make water conservancy diversion
The limit notch 540 of lining 500 abuts cooperation with the stopper protrusion 810 of stop collar 800 while makes the first step of stop collar 800
820 abut relatively with the second step 210 of impeller 200, it is possible to achieve the installation of the transverse direction and longitudinal direction both direction of stop collar 800
It is fixed, second seal 900 is located between first step 820 and second step 210 on this basis, it is ensured that water conservancy diversion
Assembling sealing between lining 500 and impeller 200, avoid that pump liquid leakage occurs and influences pumping efficiency.Need what is illustrated
It is that second seal 900 can be O-ring seal, oil sealing etc., this implementation is preferably O-ring seal, and it is in first step 820
And deformed upon under the extruding of second step 210 and then the hole between loading step side, so as to realize that excellent sealing is imitated
Fruit.
Further, the internal perisporium of the stop collar 800 is provided with least two first steps in ladder arrangement
820, the impeller 200 be provided with ladder arrangement at least two second steps 210, all first steps 820 with
All second steps 210 correspond relatively, and the quantity at least two of the second seal 900, and described second
Seal 900 is located between the first step 820 and the second step 210 correspondingly.Thus by ladder
At least two first steps 820 and at least two second steps 210 of arrangement and a pair of at least two second seals 900 1
It should clamp and cooperatively form labyrinth seal structure, can further lift the sealed reliable between impeller 200 and water conservancy diversion lining 500
Property, and then lift the performance of whole pump.Specifically, it is a waist and base vertical, another waist and base that stop collar 800, which is section,
Inclined trapezoidal ring body, the inclined-plane of ring body are relative with impeller 200；I.e. at least two first steps 820 are set gradually along the inclined-plane.
Correspondingly, impeller 200 is again provided with oblique with above-mentioned inclined-plane incline direction and inclined-plane degree identical with 500 relative sides of water conservancy diversion lining
Face, i.e. at least two second steps 210 are set gradually along the inclined-plane.Two neighboring first step 820 coordinates with second step 210
It is linked to be the sealing passage of bending type, good seal performance.
Fig. 3 is refer to, above-mentioned multistage middle open pump also includes the impeller positioning sleeve that suit is fixed on the pump shaft 100
1000, the quantity at least two of the impeller 200, at least two impellers 200 are located at the impeller positioning sleeve respectively
1000 both sides, and the impeller positioning sleeve 1000 is provided with conduction part 1000a away from the side of the pump shaft 100.Thus pass through
Impeller positioning sleeve 1000 can realize being mutually located for the two neighboring impeller 200 in multistage middle open pump, to ensure whole pump
It is safe to use and reliable；In addition, setting conduction part 1000a away from the side of pump shaft 100 in impeller positioning sleeve 1000, be advantageous to increase
Add waterpower excessively stream shape, improve the whole efficiency of pump, while fairing air flowability can be played, reduce pump vibration, noise.Specifically
, conduction part is to be located at the arcwall face of the side of flow channels 310 located at impeller positioning sleeve 1000, thus with preferable water conservancy diversion effect
Fruit is small with the comparative resistance of liquid stream.
As shown in Fig. 2 in addition, also including locking member 1100, the water conservancy diversion lining 500 is additionally provided with installation portion 550, the installation
Portion 550 is provided with the first pilot hole (not shown), and the pump housing 300 is provided with second assembling relative with first pilot hole
Hole (not shown), the locking member 1100 are arranged in first pilot hole and second pilot hole.Thus pass through lock
Tight part 1100 is arranged in the first pilot hole and the second pilot hole, and the installation for being easy to implement water conservancy diversion lining 500 is fixed, and the connected mode
Simply, it is convenient to mount and dismount, advantageously reduces manufacture and maintenance difficulty.Specifically, locking member 1100 can be screw, bolt etc., phase
Ying Di, first and second pilot hole are screwed hole, be adapted to by screw or bolt with two screwed holes spin realize water conservancy diversion lining 500 with
The installation of the pump housing 300 is fixed.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
- A kind of 1. multistage middle open pump, it is characterised in that including：Pump shaft；Impeller, the impeller suit are fixed on the pump shaft；The pump housing provided with flow channels, the pump housing are set in the outside of the pump shaft, and the impeller is located at the flow channels It is interior, and the inwall of the impeller and the pump housing cooperatively forms accommodating cavity；AndWater conservancy diversion is served as a contrast, and the water conservancy diversion lining is arranged on the pump housing and in the accommodating cavity, and water conservancy diversion lining and the pump The inwall of body, the impeller abut cooperation.
- 2. multistage middle open pump according to claim 1, it is characterised in that the water conservancy diversion is lined with diversion division, the water conservancy diversion Portion is enclosed located at the periphery of the pump shaft, and the diversion division seamlessly transits along the bearing of trend of flow channels.
- 3. multistage middle open pump according to claim 1, it is characterised in that also including first seal, the pump housing it is interior The direction of wall to the pump shaft is convexly equipped with gear and connects boss, and the water conservancy diversion is lined with free end, and the free end is arranged with seal groove, The first seal is embedded in the seal groove and connects boss with the gear and abuts.
- 4. multistage middle open pump according to claim 3, it is characterised in that it is recessed that the side that the gear connects boss is arranged with positioning Portion, the free end convex are provided with position block, the position block and the spacing cooperation of the location indentations.
- 5. multistage middle open pump according to claim 1, it is characterised in that between the water conservancy diversion lining and the inwall of the pump housing Cooperatively form the toroidal cavity for reducing pump housing weight.
- 6. multistage middle open pump according to claim 1, it is characterised in that the water conservancy diversion lining, which is additionally provided with, avoids convex portion, described Convex portion is avoided to the direction of the pump shaft to extend and with the impeller clearance coordinate.
- 7. multistage middle open pump according to claim 1, it is characterised in that described also including stop collar and second seal Water conservancy diversion lining is additionally provided with limit notch, and the periphery wall of the stop collar is provided with the stopper protrusion being adapted to the limit notch, described The internal perisporium of stop collar is provided with first step, and the impeller is provided with relative with the first step towards the side that the water conservancy diversion serves as a contrast Second step, the stopper protrusion and the spacing cooperation of the limit notch, the second seal is located in the First Between rank and the second step.
- 8. multistage middle open pump according to claim 7, it is characterised in that it is in ladder cloth that the internal perisporium of the stop collar, which is provided with, At least two first steps put, the impeller are provided with least two second steps in ladder arrangement, Suo Yousuo First step is stated to correspond relatively with all second steps, and the quantity at least two of the second seal, institute Second seal is stated to be located in correspondingly between the first step and the second step.
- 9. the multistage middle open pump according to any one of claim 1 to 8, it is characterised in that be also fixed on including suit described Impeller positioning sleeve on pump shaft, the quantity at least two of the impeller, at least two impellers are located at the impeller respectively The both sides of positioning sleeve, and the impeller positioning sleeve is provided with conduction part away from the side of the pump shaft.
- 10. the multistage middle open pump according to any one of claim 1 to 8, it is characterised in that described to lead also including locking member Stream lining is additionally provided with installation portion, and the installation portion is provided with the first pilot hole, and the pump housing is provided with relative with first pilot hole Second pilot hole, the locking member are arranged in first pilot hole and second pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720357698.1U CN206668563U (en) | 2017-04-06 | 2017-04-06 | Multistage middle open pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720357698.1U CN206668563U (en) | 2017-04-06 | 2017-04-06 | Multistage middle open pump |
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| Publication Number | Publication Date |
|---|---|
| CN206668563U true CN206668563U (en) | 2017-11-24 |
Family
ID=60366972
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720357698.1U Active CN206668563U (en) | 2017-04-06 | 2017-04-06 | Multistage middle open pump |
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| CN (1) | CN206668563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762677A (en) * | 2017-04-06 | 2017-05-31 | 安德里茨（中国）有限公司 | Multistage middle open pump |
-
2017
- 2017-04-06 CN CN201720357698.1U patent/CN206668563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762677A (en) * | 2017-04-06 | 2017-05-31 | 安德里茨（中国）有限公司 | Multistage middle open pump |
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