CN2198426Y - Liquid closing water pump shaft seal device - Google Patents
Liquid closing water pump shaft seal device Download PDFInfo
- Publication number
- CN2198426Y CN2198426Y CN 94236831 CN94236831U CN2198426Y CN 2198426 Y CN2198426 Y CN 2198426Y CN 94236831 CN94236831 CN 94236831 CN 94236831 U CN94236831 U CN 94236831U CN 2198426 Y CN2198426 Y CN 2198426Y
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- CN
- China
- Prior art keywords
- pump
- seal
- water
- ring
- seal ring
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a shaft seal device on liquid closing water pumps, comprising a pump body and filler culvert formed between screw pump shafts. The utility model is characterized in that the filler culvert is provided with a sealing ring 1 which can assure the pump without water leakage in reverse watering and a sealing ring 2 which can prevent the air out of the pump entering into the pump, and the sealing ring 1 and the screw end of the pump shaft are provided with chambers. A water seal ring is positioned between the sealing rings 1, 2, so the seal rings 1, 2, the water seal ring and the pump shaft form a water sealing chamber. The utility model has the advantages of simple structure, low cost, convenient installation, no filler, long service life, good sealing effect and high versability, and the utility model can accomplish the micro-contact mechanical friction movement.
Description
The utility model relates to a kind of pump seal device, particularly be a kind of liquid sealing pump seal device.
General water pump packing mainly contains packing seal and mechanical seal at present.Packing seal exists the defective that mechanical loss is big, working life is short, damage parts is frequent; Though and mechanical seal has the little advantage of mechanical loss, but still exist " rotating ring and stationary ring " heavy wear and the masty problem of spare part material.Application number is that the utility application of CN89219341.7 discloses a kind of automatic water-sealed pump gland seal device, eliminated the loss of friction, wearing and tearing and frictional work, complex structure, manufacture cost height, using scope are little, the shortcoming of versatility difference but still exist: 1. filler is contained the water pump of diameter less (φ is below 70), can't implement under not because of its gland seal device cloth, multistage pump can not be used because of there being the axial displacement problem; 2. the water-supply method of water pump also is restricted, because of two-way its sealability of U type seal ring in this gland seal device be folk prescription to, can not be used for the water pump of perfusion type (Pump Suction Nozzle is a malleation) and vacuum type (Pump Suction Nozzle is a negative pressure) water intaking.
In view of above reason, the purpose of this utility model is for a kind of good seal performance is provided, simple in structure, low cost of manufacture, highly versatile, long service life, the liquid sealing pump seal device that using scope is wide.
The filler that has the pump housing and volute pump between centers to form in the utility model is contained, it is characterized in that filler is positioned at the pump shaft spiral end in containing and has and make pump pour in down a chimney the not seal ring of external leakage (1) of water, make the pump outer air not enter the interior seal ring (2) of pump, seal ring (1) has chamber with pump shaft spiral end, the water seal circle is positioned between seal ring (1,2), formed water tight compartment between seal ring (1,2), water seal circle (13) and pump shaft, end cover is positioned at filler and contains mouthful (referring to a Fig. 1).
Have respectively in the above-mentioned seal ring (1,2) and seal all-in-one-piece boss, interior ring pin, outer shroud pin, formed U type annular groove between the inside and outside ring pin, seal ring adopts elastic material to make (referring to Fig. 2), adopt boss that seal ring closely is connected with the water seal circle, adopt U type annular groove to make seal ring that good elasticity be arranged, down static and pump shaft has certain clearance, adopt the ring pin directly to contact and certain pretightening force (self-tightening power) is arranged with pump shaft, the pump housing (former filler culvert wall), and the energy that has good wearability, realization static seal.
Above-mentioned water seal loop-shaped is a ring, and the priming hole perpendicular to axis is arranged in the water seal circle, and this priming hole communicates (referring to Fig. 1) with introducing hole on the pump shaft, can load onto modulating valve in the water pipe on being connected to the pump shaft priming hole.
When the water pump suction port is malleation (perfusion type water intaking) running, under the effect of spiral pump shaft (water in the pump not can external leakage), water in the chamber flows in pump and forms vacuum, the ring intercrural space of sealing water in the water tight compartment by seal ring (1) enters chamber and compensates (referring to Fig. 3), and then by the spiral pump shaft of rotation its water is transported in the pump, realize that the running of " perfusion type water intaking " seals; When the water pump suction port is negative pressure (vacuum type water intaking) running, under the acting in conjunction of its negative pressure and spiral pump shaft, negative pressure in the chamber strengthens, the sealing water yield (isolated pump outer air) that only needs on the basis of the above to strengthen in the water tight compartment can realize the running sealing of " vacuum type water intaking ", thereby has realized the running sealing of " water intaking of perfusion vacuum type ".
Source pressure in the water tight compartment is in pump discharge, and the press water in it also will solve the pretightening force of seal ring ring pin to pump shaft except that isolated pump outer air, cooling axle envelope part.When pump working, the pressure bullet in the water tight compartment acts on the seal ring endoporus, and U type annular groove partly produces resiliently deformable, makes the ring pin leave the motion (referring to Fig. 3) of pump shaft, and the pretightening force of encircling pin is reduced to bottom line.Because the bigger reason of pressure difference of (negative pressure) in (malleation) and the chamber in the water tight compartment, the pretightening force of seal ring (1) ring pin is eliminated substantially, and and pump shaft between certain clearance (referring among Fig. 3 shown in a) is arranged, its press water passes through and forms moisture film by this gap, realizes that seal ring (1) encircles the consumption that pin does not have relative mechanical friction campaign with pump shaft and do not have frictional work; Seal ring (2) is because the outer less reason of (atmospheric pressure) pressure difference of malleation in the water tight compartment and pump, the pretightening force of its ring pin can not be eliminated fully, remain on running (shown in b among Fig. 3) under little contact condition with pump shaft, its leakage quantity that leaks is advisable with 20～40 droplets/minute, this modulating valve that is abutted against outside pump housing priming hole is realized, thereby has been realized little fricting movement of seal ring (2).Because the material of this ring is an elastic material, wear-resisting property is good, and little friction can not produce big infringement to this ring, so long service life (continuous running can more than 1 year).
Seal ring (1) is realized the termination of pumping sealing, the sealing when seal ring (2) is realized the pump starting.
Termination of pumping sealing is the sealing of " perfusion type water intaking " after the termination of pumping: when water pump suction port positive pressure lower (water level is lower), can realize sealing under the self-tightening power effect of seal ring (1) ring pin; When it has suction port positive pressure higher (water level is higher), its pressure acts on the U type annular groove portion of seal ring (1), sealing annular distance generation resiliently deformable and pump shaft are fitted tightly, outer shroud and filler are contained the wall applying, pour in down a chimney the not external leakage of pouring water in the canned pump, the sealed characteristic of its U type annular groove portion is that big more its applying of the inside and outside pressure difference of pump is just firm more, and sealing effect is just good more.
The sealing of pump starting, when the less starting of water pump suction port negative pressure (vacuum type water intaking), the self-tightening power of seal ring (2) ring pin can realize sealing; When negative pressure was big in the pump, axis hole and the outer shroud of the U type annular groove portion that the outer atmospheric pressure of pump acts on seal ring (2) on it was in contact with it face with above-mentioned process and fits tightly and realize sealing guaranteeing the degree of vacuum in the pump.Adopt when pouring water (diversion) starting in the pump working principle when its seal operation principle is hanged down with above-mentioned termination of pumping sealing suction port positive pressure.
Compare with existing pump shaft seal apparatus, the utlity model has following advantage:
1, simple in structure, low cost of manufacture; Easy for installation;
2, no filler is realized little contact mechanical friction campaign, long service life;
3, good sealing effect;
4, highly versatile is applied widely, is applicable to the water pump of various large and small bores and multistage pump water pump and different water-supply method (that is: perfusion type, vacuum type, perfusion vacuum type).
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model structural representation
Fig. 2 is the seal ring structure schematic representation
Fig. 3 is the seal ring dynamic schematic diagram
Referring to Fig. 1, seal ring 1 and seal ring 2 place the pump housing 3 and formed filler to contain 5.Seal ring 1 and spiral pump shaft 4 spiral ends form chamber 6.The end cover 7 that adopts metallic material to make is positioned at filler culvert mouthful place and is tightly packed on the pump housing 3 with screw.
Referring to Fig. 2, seal ring 1 is identical with the shape of seal ring 2.Interior ring pin 9, outer shroud pin 10 are arranged and seal ring body all-in-one-piece boss 8.Formed U type annular groove 11 in the inside and outside ring pin.Seal ring 1,2 adopts elastic material to make.
Referring to Fig. 1, seal ring 1,2 is contained on the spiral pump shaft boss on it and installs relatively and form water tight compartment 12, is equipped with on it and adopts metal or nonmetallic material to make the water seal circle 13 that is shaped as ring, and the priming hole 14 perpendicular to axis is arranged in the water seal circle 13.Priming hole 14 communicates with priming hole 15 on the pump housing, is connected to modulating valve 16 is housed on the pipeline on the pump housing priming hole.The utility model has constituted seal assembly, can integral body place in the filler culvert.Press water in the water tight compartment has three kinds of effects; Realize liquid sealing, the ring pin is realized the sealing of little contact (applying) state to the pretightening force of pump shaft in the depressurization ring, reduces the friction and wear of its ring pin significantly, prolongs the working life and the cooling axle envelope part of seal ring.
Fig. 3 is a seal ring dynamic schematic diagram in the utility model.When pump working, pressure in the water tight compartment acts on the axle collar of seal ring 1,2, the U type annular groove of ring partly produces resiliently deformable, make the ring pin leave the motion of pump shaft, the pretightening force of ring pin is reduced to bottom line, because the pressure difference of (malleation) and chamber interior (negative pressure) is bigger in the water tight compartment, ring pin pretightening force is eliminated substantially in the seal ring 1, and certain clearance a is arranged with pump shaft, its press water passes through and forms moisture film by this gap, realizes that seal ring 1 ring pin and pump shaft do not have the consumption of relative mechanical friction and no frictional work.Seal ring 2 remains on little contact condition because the outer less reason of (atmospheric pressure) pressure difference of malleation in the water tight compartment and pump is encircled the pretightening force of pin and can not be eliminated fully in it shown in b among Fig. 3 with pump shaft.
Claims (3)
1, liquid sealing pump seal device, comprise the filler culvert (5) that the pump housing and volute pump between centers form, it is characterized in that described filler contain be positioned in (5) the pump shaft spiral end have make pump pour in down a chimney water not the seal ring of external leakage (1), make the pump outer air not enter the seal ring (2) of pump, seal ring (1) has chamber (6) with pump shaft spiral end, water seal circle (13) is positioned between seal ring (1,2), formed water tight compartment (12) between seal ring (1,2), water seal circle (13) and pump shaft, end cover (7) is positioned at filler and contains mouth.
2, liquid sealing pump seal device as claimed in claim 1, it is characterized in that having respectively in the described seal ring (1,2) and seal all-in-one-piece boss (8), interior ring pin (9), outer shroud pin (10), formed U type annular groove (11) between the inside and outside ring pin, seal ring (1,2) adopts elastic material to make.
3, liquid sealing pump seal device as claimed in claim 1 is characterized in that described water seal circle (13) is shaped as ring, and the priming hole (14) perpendicular to axis is arranged in the water seal circle (13), and priming hole (14) communicates with priming hole on the pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236831 CN2198426Y (en) | 1994-07-15 | 1994-07-15 | Liquid closing water pump shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236831 CN2198426Y (en) | 1994-07-15 | 1994-07-15 | Liquid closing water pump shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2198426Y true CN2198426Y (en) | 1995-05-24 |
Family
ID=33844706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236831 Expired - Fee Related CN2198426Y (en) | 1994-07-15 | 1994-07-15 | Liquid closing water pump shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2198426Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072192A (en) * | 2010-11-19 | 2011-05-25 | 苏州顶裕节能设备有限公司 | Centrifugal fan shaft seal structure |
| CN105600981A (en) * | 2015-10-22 | 2016-05-25 | 上海市城市排水有限公司 | Seal water system for pump station |
| CN105885887A (en) * | 2016-06-16 | 2016-08-24 | 陈为国 | Dry distillation system for resource utilization of household garbage and dry distillation method |
| CN108343611A (en) * | 2017-01-22 | 2018-07-31 | 襄阳五二五化工机械有限公司 | A kind of slurry circulation pump being used for half water law phosphoric acid |
-
1994
- 1994-07-15 CN CN 94236831 patent/CN2198426Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072192A (en) * | 2010-11-19 | 2011-05-25 | 苏州顶裕节能设备有限公司 | Centrifugal fan shaft seal structure |
| CN105600981A (en) * | 2015-10-22 | 2016-05-25 | 上海市城市排水有限公司 | Seal water system for pump station |
| CN105885887A (en) * | 2016-06-16 | 2016-08-24 | 陈为国 | Dry distillation system for resource utilization of household garbage and dry distillation method |
| CN108343611A (en) * | 2017-01-22 | 2018-07-31 | 襄阳五二五化工机械有限公司 | A kind of slurry circulation pump being used for half water law phosphoric acid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |