CN207583681U - Two-stage Turo pump - Google Patents
Two-stage Turo pump Download PDFInfo
- Publication number
- CN207583681U CN207583681U CN201720563775.9U CN201720563775U CN207583681U CN 207583681 U CN207583681 U CN 207583681U CN 201720563775 U CN201720563775 U CN 201720563775U CN 207583681 U CN207583681 U CN 207583681U
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- China
- Prior art keywords
- impeller
- stage
- pump
- pump housing
- turo
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Abstract
The utility model discloses a kind of two-stage Turo pump, the two-stage Turo pump includes：The pump housing, the pump housing are equipped with inlet port and outlet port；Pump cover, the pump cover are located on the pump housing；Axis, the axis are rotatably provided in by bearing on the pump housing；And first stage impeller and secondary impeller, each in the first stage impeller and the secondary impeller is arranged on the shaft, each in the first stage impeller and the secondary impeller is located in the pump housing, the shape of wherein described first stage impeller is identical with the shape of the secondary impeller, the size of the first stage impeller is identical with the size of the secondary impeller, and a radial section of the first stage impeller axis opposite with the secondary impeller is symmetrical.There is axial force of impeller autobalance, simple in structure, manufacture difficulty is small, manufacture cost is low etc. according to the two-stage Turo pump of the utility model embodiment.
Description
Technical field
The utility model is related to Turo pump, in particular to two-stage Turo pump.
Background technology
In view of cavitation factor, the inlet diameter of the first stage impeller of existing two-stage (two-speed) pump is always than the inlet diameter of secondary impeller
Greatly, so as to cause axial force caused by two impellers uneven, the bearing life of water pump can be substantially reduced, influences the fortune of water pump
Row reliability.
Existing Turo pump in order to balance the axial force of impeller or increase balancing frame, balance ring, the structures such as balance cylinder,
Back blades is set on impeller.That is, existing Turo pump needs to set additional component, to balance the axis of impeller
Xiang Li, thus leads to that existing Turo pump is complicated, manufacture difficulty is big, manufacture is of high cost.
Utility model content
The utility model aims to solve the problem that problems of the prior art.It for this purpose, can be certainly the utility model proposes one kind
The two-stage Turo pump of axial force of impeller is balanced dynamicly.
To achieve these goals, proposition two-stage Turo pump according to the present utility model, the two-stage Turo pump include：Pump
Body, the pump housing are equipped with inlet port and outlet port；Pump cover, the pump cover are located on the pump housing；Axis, the axis pass through bearing
It is rotatably provided on the pump housing；And first stage impeller and secondary impeller, in the first stage impeller and the secondary impeller
Each is arranged on the shaft, each in the first stage impeller and the secondary impeller is located in the pump housing, wherein
The shape of the first stage impeller is identical with the shape of the secondary impeller, the size of the first stage impeller and the secondary impeller
Size is identical, and a radial section of the first stage impeller axis opposite with the secondary impeller is symmetrical.
Two-stage Turo pump according to the present utility model by the first stage impeller and secondary impeller that set shape, size identical,
And make first stage impeller and a radial section of secondary impeller relative axle symmetrical, so as to completely automatically balance two-stage eddy flow
The axial force of the impeller of pump.In other words, the axial force of first stage impeller and the axial force of secondary impeller is equal in magnitude and direction on the contrary,
Therefore without the additional component of setting, it is possible to balance the axial force of the first stage impeller of two-stage Turo pump and the axial direction of secondary impeller
Power.
Therefore, two-stage Turo pump according to the present utility model has axial force of impeller autobalance, simple in structure, manufacture hardly possible
Spend the advantages of small, manufacture is at low cost.
Two-stage Turo pump according to the present utility model can also have following additional technical feature：
The first transfer passage is formed between the side of the front end face of the blade of the first stage impeller and the pump housing, it is described secondary
The second transfer passage connected with first transfer passage is formed between grade impeller and the side of the pump cover.
The blade of the first stage impeller has high incidence, and the blade of the secondary impeller has high incidence.
The blade of the first stage impeller is height edge folding blades, and the blade of the secondary impeller is height edge folding blades.
The two-stage Turo pump further comprises axle envelope, and the axle envelope is located between the axis and the bearing.
The axle envelope is Double End bellows mechanical shaft seal.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the structure diagram according to the two-stage Turo pump of the utility model embodiment.
Two-stage Turo pump 100, the pump housing 1, pump cover 2, first stage impeller 3, secondary impeller 4, axis 5.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that the utility model
Limitation.
In the description of the present invention, it is to be appreciated that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description rather than instruction
Or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model.In addition, term " first ", " second " be only used for description purpose, and it is not intended that instruction or
Imply relative importance or the implicit quantity for indicating indicated technical characteristic.The spy of " first ", " second " is defined as a result,
Sign can be expressed or implicitly include one or more this feature.In the description of the present invention, unless otherwise saying
Bright, " multiple " are meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
Below with reference to Fig. 1 descriptions according to the two-stage Turo pump 100 of the utility model embodiment.As shown in Figure 1, according to this reality
Include the pump housing 1, pump cover 2, axis 5, first stage impeller 3 and secondary impeller 4 with the two-stage Turo pump 100 of new embodiment.
The pump housing 1 is equipped with inlet port and outlet port, and pump cover 2 is located on the pump housing 1.Axis 5 is rotatably provided in pump by bearing
On body 1.Each in first stage impeller 3 and secondary impeller 4 is set on axis 5, each in first stage impeller 3 and secondary impeller 4
It is a to be located in the pump housing 1.Wherein, the shape of first stage impeller 3 is identical with the shape of secondary impeller 4, size and the secondary of first stage impeller 3
The size of impeller 4 is identical, and first stage impeller 3 and a radial section of 4 relative axle 5 of secondary impeller are symmetrical.That is, chopped-off head leaf
The size of wheel 3 is identical with the size of secondary impeller 4, and a radial section is perpendicular to the axis of axis 5.
Existing Turo pump in order to balance the axial force of impeller or increase balancing frame, balance ring, the structures such as balance cylinder,
Back blades is set on impeller.That is, existing Turo pump needs to set additional component, to balance the axis of impeller
Xiang Li, thus leads to that existing Turo pump is complicated, manufacture difficulty is big, manufacture is of high cost.
3 and of first stage impeller that sets shape, size identical is passed through according to the two-stage Turo pump 100 of the utility model embodiment
Secondary impeller 4 and make first stage impeller 3 and a radial section of 4 relative axle 5 of secondary impeller symmetrical, so as to fully automated
The axial force of the impeller of ground balance two-stage Turo pump 100.In other words, the axial force of the axial force of first stage impeller 3 and secondary impeller 4
Equal in magnitude and direction is on the contrary, therefore without additional component is set, it is possible to balance the first stage impeller 3 of two-stage Turo pump 100
Axial force and secondary impeller 4 axial force.
Therefore, axial force of impeller autobalance, structure letter are had according to the two-stage Turo pump 100 of the utility model embodiment
The advantages such as list, manufacture difficulty are small, manufacture cost is low.
Manufacture is designed using the design method of Turo pump according to the two-stage Turo pump 100 of the utility model embodiment.
Two-stage Turo pump 100 has when the pumped (conveying) medium temperature difference is big, solid content is high, carries larger particles and longer fibers in pumped (conveying) medium
Clear superiority.It is held back in the pump chamber behind pumping chamber this is because the key structural feature of Turo pump is impeller, operation principle
It is：Medium by impeller rotate caused by centrifugal force effect increase energy, into interlobate medium by blade act on and leaf
Wheel moves together, the perforation stream larger because centrifugal force is formed of the medium near impeller outlet, while the medium in the middle part of impeller
Recycle stream is generated, perforation flows through the discharge port and flows out and generate certain pressure and reach rated head；Exhausted big portion in medium
Solid particle and fiber is divided not to be directly over impeller and obtain energy, but is discharged after being moved in no phyllocyst through the discharge port, from
And achieve the purpose that convey complex dielectrics or impurity containing fluid.
Compared with centrifugal pump, two-stage Turo pump 100 is simple in structure, flow passage components are not easy to wear, contains larger in conveying
When grain and the fluid of longer fibers, conveyance capacity is strong and stable.Compared with the centrifugal pump of same volume, two-stage Turo pump
Lift can be improved 30% by 100.Thus two-stage Turo pump 100 can significantly improve lift or significantly reduce volume, into
And significantly mitigate weight.
Due to, without sealing ring, being not present after wearing, because of the pump housing 1 and chopped-off head at the impeller inlet of two-stage Turo pump 100
Impeller 3, pump cover 2 and secondary impeller 4 running clearance increase, caused by pump hydraulic performance decline the problem of.Two-stage Turo pump 100
Variation of the lift in the effective use scope of flow is not more than 5%, therefore two-stage Turo pump 100 is especially suitable for changes in flow rate
Under operating mode, the needs of constant pressure conveying system.
Since there are gaps between the wheel rotation part and stationary parts of centrifugal pump（Such as impeller port ring gap）, therefore be
The axial force of balance impeller needs to increase additional structures, the components such as setting balance hole, thereby results in part and obtain energy from impeller
The liquid of amount flows to low-pressure area by gap or balance hole from higher-pressure region, and the portion of energy of liquid is caused to be consumed in the flowing of leakage
In the process.
Since the impeller channel of two-stage Turo pump 100 is wide, the cavitation performance of two-stage Turo pump 100 and centrifugal pump have compared with
Big difference.Specifically, the efficiency net positive suction head curve of centrifugal pump is in the trend risen after falling before, the cavitation erosion property in small flow area
Can it is poor, cavitation occur when lift drastically decline, cavitate better performances in the range of intermediate flow, critical NPSH value compared with
Small, head curve slowly declines when cavitation occurs, and big flow area cavitation erosion degradation, critical NPSH value becomes larger.
And for two-stage Turo pump 100, in the range of larger impeller inlet change in size, to cavitation performance without apparent shadow
It rings, therefore the first stage impeller 3 of two-stage Turo pump 100 can be identical with outlet diameter with the inlet diameter of secondary impeller 4, so as to
It can completely automatically ballast pump rotor axial power.
In some embodiments of the utility model, the blade of first stage impeller 3 can be height edge folding blades, secondary impeller
4 blade can be height edge folding blades.Due to the inside of two-stage Turo pump 100, there are apparent whirlpool, two-stage eddy flows
Height edge folding blades may be used in pump 100, it is possible thereby to efficiently reduce circulating loss, improve hydraulic efficiency.With flanging
Impeller by improving the mobility status of pumping chamber, reduces hydraulic loss, improves eddy flow pump lift and efficiency.
Two-stage Turo pump 100 without there are stronger longitudinal whirlpool and axial whirlpool, the blades of first stage impeller 3 inside phyllocyst
And the blade of secondary impeller 4 selects height edge folding blades, while the hydraulic efficiency for improving two-stage Turo pump 100, to raising
The influence very little of journey, and height edge folding blades make the high-efficiency point of two-stage Turo pump 100 be deviated to small direction of the traffic.
Form the first transfer passage between the front end face of the blade of first stage impeller 3 and the side of the pump housing 1, secondary impeller 4 with
The second transfer passage connected with first transfer passage is formed between the side of pump cover 2.Stretch into the ruler of no phyllocyst deeply with impeller
Very little increase, head curve and efficiency curve increase, and thus can not only ensure that the reflux of liquid in two-stage Turo pump 100 is empty
Between, and can ensure between the pump housing 1 and first stage impeller 3 and between pump cover 2 and secondary impeller 4 without running clearance, so as to disappear
The problem of mutually being worn in addition to the pump housing 1 and first stage impeller 3 and pump cover 2 and secondary impeller 4, even if ensureing two-stage Turo pump 100
Long-term constant-pressure operation, performance will not decline.
The blade of first stage impeller 3 can have high incidence, and the blade of secondary impeller 4 can also have high incidence.For chopped-off head
The blade of impeller 3 and the blade addition high incidence of secondary impeller 4, can improve two-stage Turo pump 100 under the conditions of big flow
Working performance.
Advantageously, first stage impeller 3 and secondary impeller 4 can arrange in opposite directions.Two-stage Turo pump 100 may further include axis
Envelope, the axle envelope can be located between axis 5 and the bearing.The axle envelope can be Double End bellows mechanical shaft seal.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can in an appropriate manner combine in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
In the case of the principle and objective for not departing from the utility model can these embodiments be carried out with a variety of variations, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (1)
1. a kind of two-stage Turo pump, which is characterized in that including：
The pump housing, the pump housing are equipped with inlet port and outlet port；
Pump cover, the pump cover are located on the pump housing；
Axis, the axis are rotatably provided in by bearing on the pump housing；
Axle envelope, the axle envelope are located between the axis and the bearing；
And
First stage impeller and secondary impeller, each in the first stage impeller and the secondary impeller are arranged on the shaft, institute
Each stated in first stage impeller and the secondary impeller is located in the pump housing, wherein the shape of the first stage impeller with it is described
The shape of secondary impeller is identical, and the size of the first stage impeller is identical with the size of the secondary impeller, the first stage impeller with
One radial section of the relatively described axis of the secondary impeller is symmetrical；
The first transfer passage, the secondary leaf are formed between the side of the front end face of the blade of the first stage impeller and the pump housing
It takes turns with forming the second transfer passage connected with first transfer passage between the side of the pump cover；
The blade of the first stage impeller has high incidence, and the blade of the secondary impeller has high incidence；
The blade of the first stage impeller is height edge folding blades, and the blade of the secondary impeller is height edge folding blades；
The axle envelope is Double End bellows mechanical shaft seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720563775.9U CN207583681U (en) | 2017-05-19 | 2017-05-19 | Two-stage Turo pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720563775.9U CN207583681U (en) | 2017-05-19 | 2017-05-19 | Two-stage Turo pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583681U true CN207583681U (en) | 2018-07-06 |
Family
ID=62717260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720563775.9U Expired - Fee Related CN207583681U (en) | 2017-05-19 | 2017-05-19 | Two-stage Turo pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949089A (en) * | 2017-05-19 | 2017-07-14 | 强胜精密机械(苏州)有限公司 | Two-stage Turo pump |
-
2017
- 2017-05-19 CN CN201720563775.9U patent/CN207583681U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949089A (en) * | 2017-05-19 | 2017-07-14 | 强胜精密机械(苏州)有限公司 | Two-stage Turo pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |