CN103775376A - Leak-free dynamic seal type pipeline pump - Google Patents
Leak-free dynamic seal type pipeline pump Download PDFInfo
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- CN103775376A CN103775376A CN201410034962.9A CN201410034962A CN103775376A CN 103775376 A CN103775376 A CN 103775376A CN 201410034962 A CN201410034962 A CN 201410034962A CN 103775376 A CN103775376 A CN 103775376A
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Abstract
The invention relates to a pipeline pump, in particular to a leak-free dynamic seal type pipeline pump for conveying a sand-containing medium. The leak-free dynamic seal type pipeline pump is provided with a motor, a main impeller, an auxiliary impeller, a pump body, a pump outlet and a pump inlet, wherein the pump outlet and the pump inlet are respectively positioned at both left and right sides of the pump body; the inner surface of the auxiliary impeller is provided with a plurality of grooves distributed in a ring shape; both ends of each groove are of a semicircular shape; the middle part of each groove is of a rectangular shape; and the processing depth of each groove is one third of the thickness of an auxiliary impeller cover board. According to the invention, the sealing and pressing capacity of the auxiliary impeller is reinforced, so that the pipeline pump is suitable to convey the sand-containing medium, is reliable to operate, is convenient to maintain, is low in maintenance cost, has no liquid leakage phenomenon and accords with the requirements on energy saving and environmental protection.
Description
Technical field
The present invention relates to pipeline mounted pump, particularly a kind of conveying containing husky medium without leaking dynamic seal type pipeline mounted pump, belong to plumbing equipment technical field.
Background technique
Pipeline mounted pump is the pump series products in fluid machinery, belongs to vertical structure, and it is identical and be positioned on same center line that pump is imported and exported diameter, can as valve, be installed among pipeline, be provided with installation footing, increase the stability of pump, compact appearance is attractive in appearance, and floor space is little, and building drops into low.Pipeline mounted pump impeller is directly installed on the extension shaft of motor, and axial dimension is short, compact structure, and motor bearings and pump configuration are reasonable, the radial and axial load that ballast pump running produces effectively, thus guaranteeing operating steadily of pump, vibrating noise is low.The shaft seal of conventional pipelines pump adopts mechanical seal or mechanical seal combination, and seal structure complex, precision prescribed is high and cost is expensive.And traditional sub-propeller adopts straight leaf formula blade structure, sees Fig. 2, in the time carrying the medium of deep-etching or SS, mechanical seal is usually broken down and is caused leak of liquid in pump, makes seal failure.When leakage liquid enters motor, may motor damage and accidents caused.
Summary of the invention
In order to make pipeline mounted pump be applicable to carrying the medium under some harsh conditions, particularly containing husky medium, the invention provides a kind of pipeline mounted pump being used in conjunction with reeded dynamic sealing of auxiliary impeller and material filling type parking sealer, the pipeline mounted pump that it has solved prior art in the time carrying containing husky medium because mechanical seal damages the leakage problem causing.
Technological scheme of the present invention is as follows: a kind of without leaking dynamic seal type pipeline mounted pump, and there is motor, main impeller, sub-propeller, the pump housing and lay respectively at pump discharge and the pump inlet of the pump housing left and right sides; Described sub-propeller internal surface has the groove of establishing multiple annular spread, groove two ends semicircular in shape, and intermediate portion is rectangular, and the described Pocket Machining degree of depth is 1/3 of sub-propeller cover sheet thickness.
Technique scheme, the groove of described multiple annular spread is evenly distributed on sub-propeller, and the blade on described sub-propeller is the multiple projections between groove; The moulding of described sub-propeller one-step casting.
Technique scheme, described motor is successively connected with main impeller and sub-propeller by electric machine main shaft; Described motor is threaded connection and is fixed on bracket, and described bracket is threaded connection and is fixed on the pump housing.
Technique scheme, the upper end binding site of described electric machine main shaft and bracket is provided with dynamic sealing of auxiliary impeller device; The lower end binding site of described electric machine main shaft and bracket is provided with parking sealer.
Technique scheme, is also provided with water retaining ring between described dynamic sealing of auxiliary impeller device and parking sealer.
The present invention changes traditional straight radial blade formula sub-propeller, produce the groove of some annular spread by the method for processing at sub-propeller internal surface, groove two ends semicircular in shape, intermediate portion is rectangular, the concrete working depth of groove is 1/3 of sub-propeller cover sheet thickness, and length is determined according to sub-propeller external diameter; " projection " between groove part is equivalent to sub-propeller blade, and under the drive of motor, fast rotational produces pressure head and seals highly pressurised liquid in the pump housing to external leakage; In addition, because groove can be collected part leakage liquid, under the effect of centrifugal force, this partially liq can be thrown out of and inflow pump body again.The present invention has strengthened the envelope pressure energy power of sub-propeller, makes pipeline mounted pump be applicable to carrying containing husky medium, reliable, easy to maintenance and maintenance cost is low, no liquid is leaked, and meets energy-conserving and environment-protective requirement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Accompanying drawing 1 is the main sectional view of pipeline mounted pump of the present invention;
Accompanying drawing 2 is conventional radial prismatic blade sub-propeller plan views;
Accompanying drawing 3 is plan views of band groove sub-propeller of the present invention;
Accompanying drawing 4 is sectional views of band groove sub-propeller of the present invention.
In figure 1, motor; 2, dynamic sealing of auxiliary impeller device; 3, water retaining ring; 4, parking sealer; 5, sub-propeller; 51, groove; 6, main impeller; 7, pump discharge; 8, pump inlet; 9, the pump housing; 10, bracket; 11, electric machine main shaft.
Embodiment
Referring to Fig. 1, the present invention is a kind of without leakage pipe line pump, and traditional straight radial blade sub-impeller seal effect is undesirable, while especially carrying containing husky medium, is easily worn.The present invention is for adopting a kind of band groove and the good dynamic sealing of auxiliary impeller formula of sealability pipeline mounted pump, and described sub-propeller 5 can directly be cast and obtain, and moulding process is simple, and cost is low.
Motor 1, bracket 10, the pump housing 9, main impeller 6, sub-propeller 5, parking sealer 4, electric machine main shaft 11, pump inlet 8 and pump discharge 7 are equipped with in the present invention.Pump discharge 7 and pump inlet 8 are separately positioned on the left and right sides of the pump housing 9.See Fig. 3 to Fig. 4, sub-propeller 5 internal surfaces have the groove 51 of establishing multiple annular spread, groove 51 two ends semicirculars in shape, and intermediate portion is rectangular, and institute's groove 51 working depths are 1/3 of sub-propeller 5 cover sheet thickness, and length is determined according to sub-propeller 5 external diameters.Motor 1 is threaded connection and is fixed on bracket 10, and the pump housing 9 is connected with bracket 10, and motor 1 is by electric machine main shaft 11 and main impeller 6, sub-propeller 5 direct connections.Main impeller 6 back shrouds arrange back blade.Dynamic sealing of auxiliary impeller device 2 is arranged on the binding site of electric machine main shaft 11 and bracket 10, between dynamic sealing of auxiliary impeller device 2 and parking sealer 4, is also provided with water retaining ring 3.Motor 1 drives sub-propeller 5 to rotate together with main impeller 6, and sub-propeller 5 outlet ports produce pressure and carry out the balance pump housing 9 internal pressures., if liquid enters sub-propeller 5 along seal clearance, under the effect of gravity, can flow back in the groove 51 of sub-propeller 5 meanwhile, then under the effect of centrifugal force, be thrown out of and again in inflow pump body 9, thereby realize without the effect of leaking dynamic seal.In the time of vehicle stop state, sub-propeller 5 seals ineffective, prevents leak of liquid by parking sealer 4.Pipeline mounted pump of the present invention is reliable, easy to maintenance and maintenance cost is low, no liquid is leaked, and meets energy-conserving and environment-protective requirement.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. without leaking a dynamic seal type pipeline mounted pump, there is motor (1), main impeller (6), sub-propeller (5), the pump housing (9) and lay respectively at the pump discharge (7) and pump inlet (8) of the pump housing (9) left and right sides; It is characterized in that: described sub-propeller (5) internal surface has the groove (51) of establishing multiple annular spread, groove (51) two ends semicircular in shape, intermediate portion is rectangular, and described groove (51) working depth is 1/3 of sub-propeller (5) cover sheet thickness.
2. according to claim 1 without leaking dynamic seal type pipeline mounted pump, it is characterized in that: it is upper that the groove (51) of described multiple annular spread is evenly distributed on sub-propeller (5), and the blade on described sub-propeller (5) is the multiple projections between groove (51); Described sub-propeller (5) one-step casting moulding.
3. according to claim 1 without leaking dynamic seal type pipeline mounted pump, it is characterized in that: described motor (1) is successively connected with main impeller (6) and sub-propeller (5) by electric machine main shaft (11); Described motor (1) is threaded connection and is fixed on bracket (10) above, and described bracket (10) is threaded connection and is fixed on the pump housing (9).
4. according to claim 3 without leaking dynamic seal type pipeline mounted pump, it is characterized in that: described electric machine main shaft (11) is provided with dynamic sealing of auxiliary impeller device (2) with the upper end binding site of bracket (10); Described electric machine main shaft (11) is provided with parking sealer (4) with the lower end binding site of bracket (10).
5. according to claim 4 without leaking dynamic seal type pipeline mounted pump, it is characterized in that: between described dynamic sealing of auxiliary impeller device (2) and parking sealer (4), be also provided with water retaining ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410034962.9A CN103775376B (en) | 2014-01-26 | 2014-01-26 | A kind of No leakage dynamic seal type pipeline mounted pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410034962.9A CN103775376B (en) | 2014-01-26 | 2014-01-26 | A kind of No leakage dynamic seal type pipeline mounted pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775376A true CN103775376A (en) | 2014-05-07 |
| CN103775376B CN103775376B (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410034962.9A Active CN103775376B (en) | 2014-01-26 | 2014-01-26 | A kind of No leakage dynamic seal type pipeline mounted pump |
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| Country | Link |
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| CN (1) | CN103775376B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401984A (en) * | 2016-12-05 | 2017-02-15 | 合肥俊刚机械科技有限公司 | Agricultural intelligent single-suction vertical centrifugal water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2632523A1 (en) * | 1976-07-20 | 1978-01-26 | Lederle Pumpen & Maschf | Centrifugal pump with shaft seal - has auxiliary blades on back of impeller disc to improve sealing |
| US4990055A (en) * | 1989-07-25 | 1991-02-05 | Itt Corporation | Dynamic seal with flushing protection of static seal |
| CN101216039A (en) * | 2007-12-28 | 2008-07-09 | 济南奔腾泵业制造有限公司 | Vertical type highly effective energy-saving abrasion-proof pump |
| CN201241839Y (en) * | 2008-08-15 | 2009-05-20 | 杭州振兴工业泵制造有限公司 | Slurry pump |
| CN201582192U (en) * | 2009-12-01 | 2010-09-15 | 上海连成（集团）有限公司 | Novel adjusting device for auxiliary impeller of self-control self-sucking pump with no seal |
| CN202659520U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | High temperature high pressure shield pump |
-
2014
- 2014-01-26 CN CN201410034962.9A patent/CN103775376B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2632523A1 (en) * | 1976-07-20 | 1978-01-26 | Lederle Pumpen & Maschf | Centrifugal pump with shaft seal - has auxiliary blades on back of impeller disc to improve sealing |
| US4990055A (en) * | 1989-07-25 | 1991-02-05 | Itt Corporation | Dynamic seal with flushing protection of static seal |
| CN101216039A (en) * | 2007-12-28 | 2008-07-09 | 济南奔腾泵业制造有限公司 | Vertical type highly effective energy-saving abrasion-proof pump |
| CN201241839Y (en) * | 2008-08-15 | 2009-05-20 | 杭州振兴工业泵制造有限公司 | Slurry pump |
| CN201582192U (en) * | 2009-12-01 | 2010-09-15 | 上海连成（集团）有限公司 | Novel adjusting device for auxiliary impeller of self-control self-sucking pump with no seal |
| CN202659520U (en) * | 2012-06-25 | 2013-01-09 | 合肥新沪屏蔽泵股份有限公司 | High temperature high pressure shield pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401984A (en) * | 2016-12-05 | 2017-02-15 | 合肥俊刚机械科技有限公司 | Agricultural intelligent single-suction vertical centrifugal water pump |
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|---|---|
| CN103775376B (en) | 2016-04-06 |
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