CN201363305Y - Non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps - Google Patents
Non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps Download PDFInfo
- Publication number
- CN201363305Y CN201363305Y CNU200820208450XU CN200820208450U CN201363305Y CN 201363305 Y CN201363305 Y CN 201363305Y CN U200820208450X U CNU200820208450X U CN U200820208450XU CN 200820208450 U CN200820208450 U CN 200820208450U CN 201363305 Y CN201363305 Y CN 201363305Y
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- static seal
- sealing
- leakage
- water
- pump
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Abstract
The utility model relates to a non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps. The original water inlet pipe and the original deflation valve are reserved; all the other parts of the existing sealing part are fully replaced; and motive seal replaces shaft seal by soft fillings, and leakage can not exist. The service life of the non-leakage sealing structure is long, a polytetrafluoroethylene gasket just needs to be changed once after ten years, and the non-leakage sealing structure does not need to maintain; a balance rib structure capable of adjusting gaps is adopted; the pressure difference changing among adjusting values inside and outside pump cavities is automatically balanced to achieve the goal of no leakage; fillings are not needed to seal; when a pair of offcenter blocks rotate, a sealing pad is disengaged; and when machines halt, the offcenter blocks press the sealing pad towards the center to achieve the goal of silent seal. Thereby, when the water level at the outlet of the pump is high, or cooling water of a guide bearing does not stop when machines halt, leakage does not exist; and a dust preventing cover with a normal open sealing ring is adopted, splashing phenomena can be prevented in the driving process, and dirt is prevented from entering pumps.
Description
Technical field
The utility model relates to a kind of vertical diagonal flow pump and axial-flow pump, relates in particular to the sealing configuration of this pump.
Background technique
Axial-flow pump and diagonal pumps are magna pump especially, and its envelope is the position of frequent maintenance, and the problem of existence is:
Sealed filling material is not wear-resisting, and with the most use is the oil immersion asbestos rope, changes half a year once; Also be to change once in 1 year now with the Bo Geman filler; The employing teflon is also arranged, and the life-span also only more than a year; The more wear-resisting liquid packing of employing is also arranged, and turn(a)round, reach 1～2 year, more bothers but change a filler.
Have leakage rate, along with long operational time, leakage rate is increasing, reaches to reveal to have to when splashing change, and becomes the on-the-spot long-term problem that does not solve that of operation;
Bigbore axle envelope should not adopt mechanical seal, because the PV value is too big.
As seen from Figure 1: existing sealing is to compress filler 7 in the stuffing box 4 by Gland 9, reaches sealing by closely cooperating between filler 7 and the axle sleeve 8.Thereby whole sealed member is connected with pump cover 3 by bolt and compresses pillar 2.By water supply connector 5 logical lubricated water in pump, gas was by outside outlet valve 10 excavationg pumps in the while pump before pump was opened.
The stuffing 7 of existing sealing, not wear-resisting, the life-span is short: owing to determined the life-span of axle envelope the friction durability of stuffing, wear-resisting in addition stuffing price is expensive and the life-span improves few.Maximum life span is no more than 2 years.The stuffing axle is sealed up for safekeeping and revealed: the various the most wear-resisting filler of new clothes also exists the water that drips shape leakage (5～6 droplets/minute) leakage to discharge by drain connection 6, and Gland 9 has compressed the excessively heated axle cover of smoldering, also the wasted work rate.Along with long operational time, axle sleeve 8 is connected and high speed rotating with axle 1 by key 101, causes thus strengthening with the wear extent of filler 7, and leakage rate will be increasing.
Summary of the invention
The utility model technical issues that need to address have provided a kind of vertical diagonal flow pump and axial-flow pump does not have the leakage sealing configuration, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: water inlet is taken over and bleed valve; Also comprise: sealing seat; Described sealing seat is connected with pump cover and compresses pillar; Water inlet adapter and bleed valve, collect cavity pressure gauge are settled on the sealing seat respectively; Water-collecting tray is connected the location with pillar, pressure wheel, static seal separator disks and stuffing box gland are connected with axle by first key, second key, triple bond respectively; Placement positioning cover between pressure wheel and the static seal separator disks; Can be positioned over along the static seal separator block that guiding groove slides on the guiding groove on the static seal separator disks; The sealing thrust block pad is placed on the inclined-plane of static seal separator block; Play first round nut of effect of location and two sides that second round nut is placed in axle respectively, second round nut is fixed to seal holder ring on the stuffing box gland; Cone rubber circle under dust cover is between water cavity lid and pressing plate; The pressure spring that connects the sealing thrust block pad is fixed on the static seal separator disks, and the extension spring that connects the static seal separator block is fixed on the stuffing box gland; The static seal rubber disc is installed in to be regulated on the water chamber.
Compared with prior art, the beneficial effects of the utility model are: motive sealing has replaced the axle envelope of soft packing, can not have leakage problem; Life-span is long, and it is just passable to change a polytetrafluoroethylene gasket after 10 years, does not safeguard at ordinary times; The balance muscle structure of employing adjustable gaps (be transferred to Maximum differential pressure and get final product by visual pressure gauge, available cooling water is transferred, and can transfer when operation, and the pump that dispatches from the factory mixes up in advance), autobalance the inside and outside pressure reduction within regulated value that changes of pump chamber, reach dead-tight purpose; Need not to seal stuffing, and throw off sealing gasket during with a secondary centrifugal running, centrifugal compresses sealing gasket to the center during shutdown, reaches the purpose of static seal; At this moment, even pump oral-lateral water level height, or the guide bearing cooling water does not stop during termination of pumping, does not still reveal; Adopt again and be with the dust cover of often opening seal ring together, the phenomenon that dabbles that occurs sometimes in the time of can preventing driving, antifouling dirt enters in the pump.
Description of drawings
Fig. 1 is vertical diagonal flow pump and an axial-flow pump sealed structural representation in the prior art;
Fig. 2 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 2: the utility model comprises: water inlet adapter 128 and bleed valve 121; Also comprise: sealing seat 15; Described sealing seat 15 is connected with pump cover 14 and compresses pillar 12; Water inlet adapter 128 and bleed valve 121, collect cavity pressure gauge 120 are settled respectively on the sealing seat 15; Water-collecting tray 13 is connected the location with pillar 12, and pressure wheel 16, static seal separator disks 18 and stuffing box gland 111 are connected with axle 11 by first key 125, second key 126, triple bond 127 respectively; Placement positioning cover 17 between pressure wheel 16 and the static seal separator disks 18; Can be positioned over along the static seal separator block 19 that guiding groove slides on the guiding groove on the static seal separator disks 18; Sealing thrust block pad 123 is placed on the inclined-plane of static seal separator block 19; Play first round nut 110 of effect of location and two sides that second round nut 117 is placed in axle 11 respectively, second round nut 117 is fixed to seal holder ring 112 on the stuffing box gland 111; At the cone rubber circle 115 under the dust cover 113 between water cavity lid 116 and pressing plate 114; The pressure spring 122 that connects sealing thrust block pad 123 is fixed on the static seal separator disks 18, and the extension spring 124 that connects static seal separator block 19 is fixed on the stuffing box gland 111; Static seal rubber disc 119 is installed in to be regulated on the water chamber 118.
The utility model keeps original water inlet adapter and bleed valve, and other parts of existing sealed member are all replaced.Stuffing box changes the effect that sealing seat plays support into, is connected with pump cover and compresses pillar.Intake pipe, outlet valve, collect cavity pressure gauge are installed on the sealing seat; Water-collecting tray is connected the location with pillar, pressure wheel, and the static seal separator disks, stuffing box gland is connected with axle by key 1, key 2, key 3 respectively, rotates with axle; Pressure wheel, the placement positioning cover plays the effect of location between the static seal separator disks.The static seal separator block is positioned on the guiding groove on the static seal separator disks, and slides along guiding groove.Round nut I, round nut II play the effect of location, and round nut II is fixed to seal holder ring on the stuffing box gland; Thereby be subjected at the cone rubber circle between water cavity lid and the pressing plate behind the pressure of dust cover closely cooperating and form motive sealing with axle; Pressure spring is fixed on the static seal separator disks, and extension spring is fixed on the stuffing box gland.The static seal rubber disc is installed in to be regulated on the water chamber, the contact by regulating water chamber with separate the purpose that reaches sealing.
Motive sealing working principle of the present utility model:
Behind the pump startup, pump shaft drives the pressure wheel rotation.When the cooling water of guide bearing is delivered to water-collecting tray submergence pressure wheel through intake pipe, or water level when rising to the pressure wheel upside in the pump chamber, form pressure difference in pressure wheel outer rim to pressure wheel wheel hub, outer rim place pressure equates with the pump chamber internal pressure, side hydraulic pressure reduces along radial direction pressure to the center gradually from outer rim on the wheel, the circular pressure gradient that formation is successively decreased to the center, the hydraulic pressure of a ring of diameter minimum is consistent with barometric pressure.And a circle pressure at wheel outer rim place is turned down gradually with the gap of wheel upside and increase, and the as installed gap is that the pressure maximum by pump chamber designs, and also can the scene transfers to pump and closes dead lift and get final product.Omit super pump at cooling water pressure and close under the dead lift prerequisite, can adjust the gap of pressure wheel upside in pump operation by increasing cooling water, timing is transferred according to the pressure gauge of collect cavity.
Along with the change of operating conditions, the pressure in the pump chamber also changes, and the water ring of pressure wheel upside just changes water ring diameter (pressure at this water ring diameter place equals atmospheric pressure all the time) automatically, makes the pressure at wheel rim place consistent with the pressure of pump inner chamber.When the pressure in the pump chamber during near the maximum balance pressure of pressure wheel, the surplus water in the adjustment process can appear, and water conservancy diversion is gone out from regulate water chamber.
The working principle of the utility model static seal:
Separator static seal: work as pump startup, the rotation of axle rotating band static and dynamic sealing separator disks, four centrifugal outer rings that under action of centrifugal force, are thrown to separator disk in the dish, the sealing thrust block pad is under the less tension of gravity and extension spring, glide and static seal rubber disc (being called for short the glue disk) disengaging along centrifugal inclined-plane, the glue disk is thrown off with the rotary seal base under action of gravity, and when reaching pump operation, static seal is thrown off.
When pump startup that moment, the static seal separator block (centrifugal) also do not throw away at that moment, and promptly glue disk and rotary seal seat ring also and do not break away from, and at that moment, have the moment skimming wear before opening, and this is that material is that the glue disk of teflon allows.Starting at that moment, centrifugal chamber throws away at that moment at centrifugal 9, the fluctuation that has instantaneous pressure to raise.Sealing surface has water to ooze out wear surface to be lubricated, improve moment dry wear situation, and the water that oozes out is derived through return pipe to the dirt seal housing that catchments.
When pump stops, the separator rotating speed slowly tends to zero, centrifugal suffered centrifugal force tends to zero gradually, centrifugal is moved to the center under the effect of pressure spring, to seal thrust block pad along pushing away on the inclined-plane, the rotary seal seat ring that pushes away glue disk and rotating speed trend zero on the sealing block formation static seal of tightly fitting weares and teares in the slight rotation that has at that moment that glue disk and rotary seal seat ring are fitted, and this is that material is that the glue disk of teflon allows.
Claims (1)
1. vertical diagonal flow pump and axial-flow pump do not have the leakage sealing configuration, comprising: water inlet is taken over and bleed valve; It is characterized in that also comprising: sealing seat; Described sealing seat is connected with pump cover and compresses pillar; Water inlet adapter and bleed valve, collect cavity pressure gauge are settled on the sealing seat respectively; Water-collecting tray is connected the location with pillar, pressure wheel, static seal separator disks and stuffing box gland are connected with axle by first key, second key, triple bond respectively; Placement positioning cover between pressure wheel and the static seal separator disks; Can be positioned over along the static seal separator block that guiding groove slides on the guiding groove on the static seal separator disks; The sealing thrust block pad is placed on the inclined-plane of static seal separator block; Play first round nut of effect of location and two sides that second round nut is placed in axle respectively, second round nut is fixed to seal holder ring on the stuffing box gland; Cone rubber circle under dust cover is between water cavity lid and pressing plate; The pressure spring that connects the sealing thrust block pad is fixed on the static seal separator disks, and the extension spring that connects the static seal separator block is fixed on the stuffing box gland; The static seal rubber disc is installed in to be regulated on the water chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820208450XU CN201363305Y (en) | 2008-12-30 | 2008-12-30 | Non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820208450XU CN201363305Y (en) | 2008-12-30 | 2008-12-30 | Non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201363305Y true CN201363305Y (en) | 2009-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820208450XU Expired - Fee Related CN201363305Y (en) | 2008-12-30 | 2008-12-30 | Non-leakage sealing structure for vertical diagonal flow pumps and axial flow pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201363305Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179717A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Packing box for submersible pump |
| CN104179715A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing allowance display stuffing box for immersible pump |
| CN104179715B (en) * | 2014-08-15 | 2016-11-30 | 苏州通力电气有限公司 | A kind of immersible pump filler surplus shows stuffing-box |
-
2008
- 2008-12-30 CN CNU200820208450XU patent/CN201363305Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179717A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Packing box for submersible pump |
| CN104179715A (en) * | 2014-08-15 | 2014-12-03 | 苏州通力电气有限公司 | Stuffing allowance display stuffing box for immersible pump |
| CN104179715B (en) * | 2014-08-15 | 2016-11-30 | 苏州通力电气有限公司 | A kind of immersible pump filler surplus shows stuffing-box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20091216 Termination date: 20111230 |