CN206071899U - A kind of deep well pump of band from sand discharge structure - Google Patents

A kind of deep well pump of band from sand discharge structure Download PDF

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Publication number
CN206071899U
CN206071899U CN201621056448.6U CN201621056448U CN206071899U CN 206071899 U CN206071899 U CN 206071899U CN 201621056448 U CN201621056448 U CN 201621056448U CN 206071899 U CN206071899 U CN 206071899U
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CN
China
Prior art keywords
cover plate
upper cover
sand discharge
sand
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201621056448.6U
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Chinese (zh)
Inventor
周岭
杨阳
陆伟刚
施卫东
王川
蒋小平
李伟
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Jiangsu University
Original Assignee
Jiangsu University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to CN201621056448.6U priority Critical patent/CN206071899U/en
Application granted granted Critical
Publication of CN206071899U publication Critical patent/CN206071899U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

This utility model belongs to field of fluid machinery, specifically discloses a kind of band from the deep well pump of sand discharge structure.Stator upper cover plate is in tilted layout, and arrange and stator lobe numbers identical sand discharge hole at axial height minimum, realize the solid particulate matters such as gravel to deposit under gravity and discharge under differential pressure action, the solid particulate matter deposition in deep well pump pump chamber can be reduced;Anti- sand table is arranged between stator upper cover plate and impeller, and the solid particulate matter that can be effectively prevented deposition in pump chamber enters blade tip clearance, reduces abrasion.

Description

A kind of deep well pump of band from sand discharge structure
Technical field
This utility model belongs to field of fluid machinery, the diving centrifugal multistage pump multiple centrifugal pump being related to used in a kind of deep-well, specifically relates to And a kind of band is mainly used in groundwater abstraction from the deep well pump of sand discharge structure.
Background technology
In deep well pump field, pumped (conveying) medium be design, run in the key factor that must take into, the characteristic of pumped (conveying) medium The performance of deep well pump was had with the life-span greatly to be affected.Many regional at home, deep well pump is used to pump silt carrying flow.Containing sand Current still have the less sandstone of most of particle diameter to enter deep well pump water inlet flow channel after intake screen, in turbine centrifugal power In the presence of, part sandstone enter stator with current, and some sandstone collects in stator upper cover plate and front shroud of impeller Between pump chamber at so that at pump chamber, sandstone content is higher, abrasion point is caused to leaf bucket tip, can cause impeller card when serious Extremely, it is impossible to operate, cause the phenomenon of burn-down of electric motor.Especially, after out of service, the sandstone in pump chamber cannot be with water for deep well pump Stream is discharged, and is all deposited at pump chamber, leverages the operational reliability of deep well pump, shortens the use longevity of deep well pump Life.
Utility model content
This utility model provides a kind of deep well pump of band from sand discharge structure.Sandstone in pump chamber can be arranged by the structure Go out, reduce abrasion of the sandstone to leaf bucket tip point, while having simple structure, it is easy to accomplish the characteristics of.
The technical solution of the utility model is:
Deep well pump of a kind of band from sand discharge structure, by inlet segment, two-stage and two-stage above impeller and stator, water exit end series connection Form, also including sand discharge hole and anti-sand table,
(1) stator upper cover plate radial skew arrangement, inclination angle is θ2, its upper surface is in the slope bottom presence near pump shaft The minima of axial height.This arrangement can cause the sandstone in pump chamber to be deposited on stator upper cover plate under gravity Upper surface slope bottom.
(2) even circumferential arrangement sand discharge hole at stator upper cover plate axial height minimum, sand discharge pore size distribution is on gate vane channel Side and number is consistent with stator lobe numbers.This arrangement can cause the little particle sandstone at pump chamber in interstage pressure Discharge with current under effect, into previous stage gate vane channel.
(3) anti-sand table is arranged between stator upper cover plate and front shroud of impeller, anti-sand table radial skew arranges that inclination angle is θ1, incline direction is contrary with stator upper cover plate.This arrangement can be effectively prevented from some and cannot pass through row because granule is larger The gravel in husky hole into the gap location on the inside of front shroud of impeller and the pump housing, causes the abrasion on impeller leaf top under flow action.
Radius R=0~the 2mm in the sand discharge hole, the tiltangleθ of stator upper cover plate2=4~10 °, the inclination angle of anti-sand table θ1=4~10 °.
The internal diameter D of the anti-sand table2With stator upper cover plate exit seal outer diameter D1 and the circumference of sand discharge hole circumference uniform distribution Diameter D3 meets following relation:(3/4D1+1/4D3)<D2<(1/2D1+1/2D3)。
Gravel above anti-sand table under gravity, is deposited on anti-sand table upper surface, as sand prevention is taken inventory in a constant inclination Angle, the gravel of deposition is by further precipitation to stator upper cover plate upper surface.Gravel below anti-sand table is deposited under gravity In stator upper cover plate upper surface.Upper cover plate upper surface is accumulated under gravity in the gravel of stator upper cover plate upper surface deposition Slope bottom.In the presence of interstage pressure, the gravel for being deposited on stator upper cover plate discharges pump chamber by sand discharge hole, enters and leads Leaf runner.And so on, just realize being automatically drained out for gravel.And the larger gravel of granule cannot enter under the stop of anti-sand table Enter the gap location on impeller leaf top and pump inwall, reduce the abrasion of impeller.
The beneficial effects of the utility model:
This utility model simple structure, is easy to processing, can realize at the automatic row of little particle sandstone and reduce big Grain abrasion of the sandstone to leaf top.
Description of the drawings
Fig. 1 is the schematic diagram of one embodiment of the present utility model;
Fig. 2 is the partial enlarged drawing of this utility model embodiment;
Fig. 3 is this utility model with the guide vane section sketch from sand discharge function deep well pump;
In figure:1- inlet segments, 2- impellers, 3- stators, 4- sand discharges hole, 5- stator upper cover plates, the anti-sand tables of 6-, 7- water sides.
Specific embodiment
With reference to the accompanying drawings and examples this utility model is further illustrated.
Embodiment illustrated in fig. 1 is a deep well pump, and a vertical multi-stage centrifugal pump, and it is by three-level impeller 2 and stator 3 Even same inlet segment 1 and a water exit end 7 are in series, and stator 3 has stator upper cover plate 5 and anti-sand table 6, stator upper cover plate 5 arrange sand discharge hole 4.
It is the partial enlarged drawing of Fig. 1 embodiments shown in Fig. 2, stator upper cover plate 5 has been evenly arranged sand discharge hole 4, the sand discharge hole 4 It is arranged at stator upper cover plate axial height minimum so that because the solid particles such as the gravel under action of gravity deposition can be from pump chamber Place discharges, and anti-sand table 6 is arranged between impeller 2 and stator upper cover plate 5, is prevented from the solid particles such as gravel and enters blade tip clearance Place, improves the reliability and service life of pump.
It is the guide vane section enlarged drawing during Fig. 1 is implemented shown in Fig. 3, stator upper cover plate 5 is in tilted layout, tiltangleθ2=4~ 10°.At stator upper cover plate axial height minimum, it is evenly arranged and stator number of blade Z1 identical sand discharge hole 4, sand discharge pore radius R=0~2mm.Anti- sand table 6 is in tilted layout, and incline direction is with stator upper cover plate conversely, tiltangleθ1=4~10 °.In anti-sand table Footpath D2It is relevant with the circle diameter D3 of 5 exit seal outer diameter D1 of stator upper cover plate and 4 circumference uniform distribution of sand discharge hole, i.e. (3/4D1+1/ 4D3)<D2<(1/2D1+1/2D3)。
When the pump is operated, due in pump chamber fluid pressure higher than in fluid pressure in previous stage gate vane channel, pump chamber due to Action of gravity and the solid particulate matter such as gravel for being deposited at sand discharge hole 4 enters previous stage stator with current under differential pressure action Runner simultaneously reenters impeller, and then discharges with current.When solid particulate matter is relatively large in diameter and cannot pass through sand discharge hole, sand prevention Disk 6 can be effectively prevented which and cause friction damage to impeller at blade tip clearance.
Ultimate principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description Simply illustrate principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model can also There are various changes and modifications, these changes and improvements are both fallen within the range of claimed this utility model.

Claims (3)

1. a kind of deep well pump of band from sand discharge structure, by inlet segment (1), two-stage and two-stage above impeller (2) and stator (3), goes out Water section (7) is in series, it is characterised in that also including sand discharge hole (4) and anti-sand table (6), stator upper cover plate (5) radial skew cloth Put, inclination angle is θ2, its upper surface is in the minima that there is axial height near the slope bottom of pump shaft;In stator upper cover plate (5) the minimum place's even circumferential of axial height arranges sand discharge hole (4), sand discharge hole (4) be distributed in above gate vane channel and number with lead Leaf lobe numbers are consistent;Stator upper cover plate (5) arranges anti-sand table (6), anti-sand table (6) radial skew cloth and front shroud of impeller between Put, inclination angle is θ1, incline direction is contrary with stator upper cover plate.
2. deep well pump of a kind of band according to claim 1 from sand discharge structure, it is characterised in that the sand discharge hole (4) Radius R=0~2mm, the tiltangleθ of stator upper cover plate (5)2=4~10 °, the tiltangleθ of anti-sand table (6)1=4~10 °.
3. deep well pump of a kind of band according to claim 1 from sand discharge structure, it is characterised in that the anti-sand table (6) Internal diameter D2Meet as follows with the circle diameter D3 of stator upper cover plate (5) exit seal outer diameter D1 and sand discharge hole (4) circumference uniform distribution Relation:(3/4D1+1/4D3)<D2<(1/2D1+1/2D3)。
CN201621056448.6U 2016-09-14 2016-09-14 A kind of deep well pump of band from sand discharge structure Withdrawn - After Issue CN206071899U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621056448.6U CN206071899U (en) 2016-09-14 2016-09-14 A kind of deep well pump of band from sand discharge structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621056448.6U CN206071899U (en) 2016-09-14 2016-09-14 A kind of deep well pump of band from sand discharge structure

Publications (1)

Publication Number Publication Date
CN206071899U true CN206071899U (en) 2017-04-05

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ID=58438073

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621056448.6U Withdrawn - After Issue CN206071899U (en) 2016-09-14 2016-09-14 A kind of deep well pump of band from sand discharge structure

Country Status (1)

Country Link
CN (1) CN206071899U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194776A (en) * 2016-09-14 2016-12-07 江苏大学 A kind of band is from the deep well pump of sand discharge structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194776A (en) * 2016-09-14 2016-12-07 江苏大学 A kind of band is from the deep well pump of sand discharge structure

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Granted publication date: 20170405

Effective date of abandoning: 20180417