CN201779066U - Anti-abrasion device for sealing opening ring of solid-liquid phase flow centrifugal pump - Google Patents

Anti-abrasion device for sealing opening ring of solid-liquid phase flow centrifugal pump Download PDF

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Publication number
CN201779066U
CN201779066U CN2010201358656U CN201020135865U CN201779066U CN 201779066 U CN201779066 U CN 201779066U CN 2010201358656 U CN2010201358656 U CN 2010201358656U CN 201020135865 U CN201020135865 U CN 201020135865U CN 201779066 U CN201779066 U CN 201779066U
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China
Prior art keywords
pump
solid
pump housing
liquid
phase flow
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Expired - Fee Related
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CN2010201358656U
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Chinese (zh)
Inventor
杨孙圣
孔繁余
刘建瑞
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Jiangsu University
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Jiangsu University
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Publication of CN201779066U publication Critical patent/CN201779066U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an anti-abrasion device for sealing opening rings of a solid-liquid phase flow centrifugal pump, which aims to resolve the problem that the efficiency of sealing opening rings of solid-liquid phase flow pumps is reduced due to abrasion. Two to ten through holes are arranged on a pump body, and a small-flow and high-lift pump is disposed outside the solid-liquid phase flow centrifugal pump to be connected with the through holes. Cleaning liquid with certain pressure is led in from the outside and respectively flows to a front pump cavity and a suction opening, thereby flushing the pump body and an impeller opening ring, avoiding abrasion to the opening ring due to particles, reducing volume loss due to leakage of the opening ring, increasing efficiency of the pump, and guaranteeing long-term stable operation of the solid-liquid phase flow pump.

Description

A kind of anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump
Technical field
The utility model relates to a kind of antiwear device of centrifugal pump impeller sealing opening ring, when the centrifugal pump that refers in particular to the double shrouded wheel structure is used to carry solid liquid media, in order to reduce the wearing and tearing of impeller and pump housing sealing opening ring, reduce volumetric loss, improve the efficient of pump, guarantee the operation steady in a long-term of solid-liquid two-phase flow pump, and the device that prevents the sealing opening ring wearing and tearing of particular design.
Background technique
When centrifugal vane pump was used to carry two media of solid-liquid, impeller generally was designed to open architecture, but open architecture is low than closed type structure efficient.In order to improve the efficient of pump, impeller should adopt closed type structure.For the impeller of closed type structure,, from impeller port ring and preceding pump housing choma gap, pass through smoothly in order to guarantee particle owing to contain particulate matter in the fed sheet of a media, avoid the sealed mouth anchor ring to kill, the choma gap is obtained bigger usually, thereby causes the volumetric loss of pump bigger, and efficient is lower.In operation process, owing to the wearing and tearing of solid particle further increase the sealing opening ring gap, cause the bigger decline of pump efficiency, the flow lift characteristic curve of pump can not meet the demands even.Document " the impeller port ring gap is to the influence of low-specific-speed pump efficiency " (Zhang Xiang, Wang Yang, the mechanical facilities of irrigation and drainage, 2008,6) has been studied the influence of specific speed pump efficiency over the ground of choma gap.Chinese patent CN200820038622, " preventing that explosion-proof submerged sewage pump choma place from producing the structure of friction spark or high temperature " discloses a kind of pump housing choma that uses nonmetallic material to make, and reached anti-riot purpose.Both all do not relate to the flushing scheme of choma.
Summary of the invention
Bigger in order to solve solid-liquid two-phase flow pumping hole czermak space, and the low problem of the efficient that causes, the utility model provides a kind of sealing opening ring wear device that prevents, guarantee the long-time running and wearing and tearing do not occur under less choma gap of solid-liquid two-phase flow pump, thereby thereby making pump have less volumetric loss obtains higher pump efficiency.
Technical solution adopted in the utility model is: be provided with liquid chunnel on the solid-liquid two-phase flow pump housing and pump housing choma, insert the clean liquid of certain pressure in the liquid chunnel entry position from the outside, part liquid flows into the front pump chamber, another part liquid flows into suction port along the choma gap, guaranteed that the liquid in the choma gap is in clean state always, realization is to the flushing of choma, the wearing and tearing of sealing opening ring have effectively been prevented, reduce the volumetric loss that the wearing and tearing owing to choma form, improved the efficient of pump.
2-10 through hole is set on the pump housing, is connected with through hole at the pump of a low-flow high-lift of solid-liquid two-phase flow pump outer installment.
Pump housing choma has two kinds of set-up modes, and a kind of is that the pump housing choma and the pump housing are provided with separately, and another kind is that pump housing choma is arranged on the pump housing.When pump housing choma is provided with separately, the through hole of some is set on pump housing choma, make the through hole correspondence on the pump housing and the pump housing choma during installation, the annular pass perhaps is set on the pump housing, make the through hole of the pump housing composition liquid chunnel that is connected with through hole on the pump housing choma.When pump housing choma was arranged on the pump housing, liquid chunnel was through hole and annular pass structure combining.
The radius of through hole is the suction port radius of 0.5%-10%.The pump housing and impeller port ring gap are taken as 0.1-3mm.Pump at a low-flow high-lift of solid-liquid two-phase flow pump outer installment is connected with liquid chunnel, the liquid that clean liquid should be the liquid phase in the solid-liquid two-phase or fed sheet of a media do not polluted, thus make pumping hole ring place be in no abrasion of particles state always.
The beneficial effects of the utility model are: by this abrasion resistant means, effectively avoided the wearing and tearing of particulate matter to impeller and pump housing sealing opening ring, improved the efficient of solid-liquid two-phase flow pump, prolonged the working life of pump.
Description of drawings
Fig. 1 is the solid-liquid two-phase flow pump anti-seal choma wear device of pump housing choma when being provided with separately.
Fig. 2 is the solid-liquid two-phase flow pump anti-seal choma wear device of pump housing choma on the pump housing time.
Among the figure, 1, impeller, 2, the pump housing, 3, through hole, 4, the annular pass, 5, pump housing choma, 6, impeller port ring.
Embodiment
The embodiment that the utility model is commonly used has two kinds: a kind of is that the pump housing choma and the pump housing are provided with separately, and another kind is that pump housing choma is arranged on the pump housing.
The utility model is provided with 2-10 through hole 3 on the pump housing 2, be connected with through hole 3 at the pump of a low-flow high-lift of solid-liquid two-phase flow pump outer installment.
In conjunction with Fig. 1, when pump housing choma 5 is provided with separately, through hole 3 is set on pump housing choma 5, make the through hole correspondence on the pump housing and the pump housing choma during installation, annular pass 4 perhaps is set on the pump housing 2, makes the through hole 3 of the pump housing 2 composition liquid chunnel that is connected with through hole on the pump housing choma 5.
In conjunction with Fig. 2, when the pump housing choma 5 and the pump housing 2 were an integral body, liquid chunnel was through hole 3 and annular pass 4 structure combining.
Through hole 3 is 0.5%-10% of suction port radius.The pump housing 2 is taken as 0.1-3mm with the gap of impeller port ring 6.Pump at a low-flow high-lift of solid-liquid two-phase flow pump outer installment is connected with through hole 3, the liquid that clean liquid should be the liquid phase in the solid-liquid two-phase or fed sheet of a media do not polluted, thus make pumping hole ring place be in no abrasion of particles state always.
General double shrouded wheel is not when being provided with liquid chunnel, because preceding pump chamber is communicated with suction port, the high pressure liquid cognition at impeller outlet place flows to the suction port position along the choma gap, forms volumetric loss.When conveying contained granule medium, particulate matter can cause wearing and tearing to impeller and pump housing sealing opening ring, and the choma gap is increased, and volumetric loss increases, and the flow lift of pump diminishes, and efficient reduces.Liquid chunnel is being set after the clean liquid of outside introducing certain pressure, part liquid flows into the front pump chamber, another part liquid flows into suction port along the choma gap, guaranteed that the liquid in the choma gap is in clean state always, realization can make the less of choma gap setting to the flushing of choma, and has effectively prevented the wearing and tearing of sealing opening ring, reduce the volumetric loss that the leakage owing to choma forms, improved the efficient of pump and the stability of operation.

Claims (4)

1. an anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump is characterized in that, on the pump housing (2) and pump housing choma (5) 2-10 through hole (3) is set, and is connected with through hole (3) at the pump of a low-flow high-lift of solid-liquid two-phase flow pump outer installment.
2. a kind of anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump according to claim 1, it is characterized in that, when pump housing choma (5) when being provided with separately, through hole and annular pass (4) are set, the through hole on the described pump housing choma (5) and annular pass (4) the composition liquid chunnel that is connected with through hole (3) on the described pump housing (2) on pump housing choma (5).
3. a kind of anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump according to claim 1, it is characterized in that, when the pump housing choma (5) and the pump housing (2) are an integral body, annular pass (4) is set, described annular pass (4) the composition liquid chunnel that is connected with described through hole (3) on pump housing choma (5).
4. according to claim 1,2 or 3 described a kind of anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump, it is characterized in that described through hole (3) is the 0.5%-10% of suction port radius.
CN2010201358656U 2010-03-19 2010-03-19 Anti-abrasion device for sealing opening ring of solid-liquid phase flow centrifugal pump Expired - Fee Related CN201779066U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201358656U CN201779066U (en) 2010-03-19 2010-03-19 Anti-abrasion device for sealing opening ring of solid-liquid phase flow centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201358656U CN201779066U (en) 2010-03-19 2010-03-19 Anti-abrasion device for sealing opening ring of solid-liquid phase flow centrifugal pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101813101A (en) * 2010-03-19 2010-08-25 江苏大学 Anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101813101A (en) * 2010-03-19 2010-08-25 江苏大学 Anti-abrasion device of sealing opening ring of solid-liquid two-phase flow centrifugal pump

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110330

Termination date: 20130319