CN203239622U - Floating sealing ring device for water pump - Google Patents
Floating sealing ring device for water pump Download PDFInfo
- Publication number
- CN203239622U CN203239622U CN 201320027630 CN201320027630U CN203239622U CN 203239622 U CN203239622 U CN 203239622U CN 201320027630 CN201320027630 CN 201320027630 CN 201320027630 U CN201320027630 U CN 201320027630U CN 203239622 U CN203239622 U CN 203239622U
- Authority
- CN
- China
- Prior art keywords
- ring
- floating
- water pump
- pump
- floating 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
Links
Images
Abstract
A floating sealing ring device for a water pump comprises a pump body, a pump shaft, an impeller installed in the pump body, and a shaft sleeve installed on the pump shaft. The floating sealing ring device for the water pump is characterized in that a pressing ring, a floating ring and a sealing seat are sleeved on an impeller port annular sealing surface or an impeller port and a shaft sleeve annular sealing surface, wherein the floating ring is located between the pressing ring and the sealing seat, the inner diameter of the sealing seat and the inner diameter of the pressing ring are same, the surface of an inner hole of the floating ring protrudes out of the inner surface of the sealing seat and the inner surface of the pressing ring, and the protruding distance is larger than the maximum radial jerk value generated when the pump shaft rotates and smaller than or equal to 1.05 times of the maximum radial jerk value generated when the pump shaft rotates. The surface of the inner hole of the floating ring has radial displacement, and the maximum radial displacement is equal to the maximum radial jerk value generated when the pump shaft rotates. By the adoption of the floating sealing ring device for the water pump, no leakage or almost no leakage exists among stages of the water pump, consequentially, the operating efficiency of the water pump is greatly improved, operation time of the water pump is prolonged, and the goals of saving energy and reducing emission and operation cost are achieved.
Description
Technical field
The utility model relates to water pump floating seal loop device, can solve various water pump inter-stage leakage problems, and this device can be accomplished without leaking or substantially without leaking and improving pump efficiency.
Background technique
Water pump is widely used in national economy, is the equipment of power consumption maximum in all consumers, and its power consumption accounts for 21% of national power consumption, and existing water pump efficiency is generally not high, average out to 75%.The reason that water pump efficiency is low, the gap in design, manufacture, main cause is the leakage problem of water pump inter-stage fluid.Water pump is comprised of the pump housing, impeller, pump shaft, axle sleeve and seal ring (multistage pump is guide blade sleeve and seal ring) etc.During due to water pump operation, there is a certain amount of circular runout in pump shaft, so between axle sleeve and seal ring, exists ，Gai gap, a certain amount of gap generally within the 0.5-0.7mm scope, this gap is the safety clearance of water pump operation, can prevent the scraping of pump shaft and seal ring and make the water pump locking.But owing to there being this gap, cause the backflow of fluid, pump efficiency is reduced greatly, that is to say that the flow that enters from unit fixed on water pump suction all do not discharge from outlet, some fluid is the inner loop at water pump by seal ring, along with the water pump prolongation of service time, washing away of accumulating over a long period by fluid, make this gap increasing, capacity of reflux is also increasing, and this gap makes pump efficiency reduce 5-20%, and this problem is also global problem.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of water pump floating seal loop device, this device can make the water pump inter-stage without leakage or substantially without leaking, thereby greatly improved the operational efficiency of water pump, extended the working time of water pump, reached the purpose of energy-saving and emission-reduction, reduction operating cost.
The utility model is achieved in that
A kind of water pump floating seal loop device, comprise the pump housing, pump shaft, be arranged on the impeller in the pump housing, be arranged on the axle sleeve on pump shaft, its special way is: on impeller end choma shape sealing surface or impeller port and axle sleeve annular sealing surface, be set with pressure ring, floating ring, sealing seat, wherein floating ring is between pressure ring and sealing seat, sealing seat is identical with the pressure ring internal diameter, described floating ring bore area protrudes sealing seat and pressure ring internal surface and 1.05 times of the radially maximum jitter amount that produces when protruding the radially maximum jitter amount produced when distance is greater than the pump shaft rotation and being less than or equal to the pump shaft rotation, the floating ring bore area has radial displacement and the maximum radial displacement amount equals when pump shaft rotates the radially maximum jitter amount produced.
Described floating ring material is elastic soft material, described floating ring endoporus and the impeller end choma shape sealing surface corresponding with it or with its corresponding impeller port and axle sleeve annular sealing surface between cross Spielpassung, be that the internal diameter that the internal diameter of floating ring is less than corresponding impeller port outside diameter or floating ring is less than corresponding impeller port outside diameter and axle sleeve external diameter, sealing seat, pressure ring internal surface are provided with the elastic deformation amount's who holds floating ring release groove.
Described floating ring is wear-resisting hard material, and have the maximum radial jerk value produced when radial sliding clearance and described radial sliding clearance are greater than the pump shaft rotation between floating ring outer peripheral surface and sealing seat, having axial sliding clearance and described axial sliding clearance between floating ring and sealing seat, pressure ring is 0.10-0.25mm.
The axial sliding clearance of floating ring and sealing seat is 0.10-0.15mm.
The floating ring outer rim be provided with annular boss and be stuck in pressure ring and seal ring between, to increase flow resistance, reduce leakage rate.
The bore area of described sealing seat, pressure ring is provided with circular groove, and leakage rate is further reduced.
The impeller end choma shape sealing surface corresponding with the floating ring bore area or be less than or equal to 0.1 with impeller port corresponding to floating ring and the friction factor of axle sleeve annular sealing surface.
Described floating ring bore area and be less than or equal to 0.1 with the friction factor of the surface of contact of pressure ring and sealing seat.
Described maximum radial jerk value is 0.05mm-0.5mm.
During water pump operation, fluid enters the pump housing, is discharged by the outlet of water pump from the import of water pump, because sealing seat is identical with the pressure ring internal diameter, described floating ring internal surface protrudes sealing seat or pressure ring internal surface and protrudes the radially maximum jitter amount produced when distance is greater than the pump shaft rotation, the floating ring bore area has radial displacement and the maximum radial displacement amount equals when pump shaft rotates the radially maximum jitter amount produced, during the pump shaft circular runout, floating ring also has the radial-play of equivalent, and its shifting amount makes not swipe between floating ring and sealing seat, pressure ring; Fluid reflux part between floating ring and the impeller end choma shape sealing surface corresponding with it or impeller end choma shape sealing surface and axle sleeve annular sealing surface substantially without leakage, or leakage rate is seldom arranged, greatly improved the efficiency of water pump.Through calculating and actual the detection, the floating ring power consumption is between 1-2% (the water pump later stage also can not surpass 2%) greatly, and pump energy saving can reach 3% left and right early stage, and the water pump later stage is energy-conservation can reach 10-15%.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model (corresponding double suction pump):
Fig. 2 is structural representation of the present utility model (corresponding multistage pump):
Fig. 3 is the structural representation (corresponding embodiment 1, embodiment 2) of sealing seat in Fig. 1, floating ring and pressure ring;
Fig. 4 is the structural representation (corresponding embodiment 3, embodiment 4) of the structural representation of sealing seat in Fig. 1, floating ring and pressure ring;
Fig. 5 is structural representation of the present utility model (corresponding single-stage pump);
In figure: shaft joint 1, pump shaft 2, the pump housing 3, floating ring 4, impeller 5, axle sleeve 6, pump cover 7, pressure ring 8, sealing seat 9, release groove 10, bolt 11, bearing body part 12, stator 13, inlet segment 301, stage casing 302, water exit end 303, annular boss 401, circular groove 801, circular groove 901.
Embodiment
As Fig. 1, shown in Fig. 3, this water pump floating seal loop device has the pump housing 3 of a double suction pump, pump cover 7, pump shaft 2, impeller 5, pump shaft 2 is provided with axle sleeve 6, bearing body part 12 and shaft joint 1, annular sealing surface at two ports of impeller 5 is set with pressure ring 8, floating ring 4 and sealing seat 9, between pressure ring 8 and sealing seat 9, by screw thread (or nail pressing), connect, described floating ring 4 materials are elastic soft material (this example adopt ebonite) the pressure ring 8 that is threaded connection, sealing seat 9 tightenings, pressure ring 8 is identical with sealing seat 9 internal diameters, described floating ring 4 internal surfaces protrude sealing seat 9 and pressure ring 8 internal surfaces, protrude the radially maximum jitter amount (this example is 0.2mm) produced when distance is greater than pump shaft 2 rotation and be less than or equal to 1.05 times of maximum jitter amount radially, this example is 1.02 times.Because adopting its internal surfaces of elastic soft material, floating ring 4 there is when radial displacement and maximum radial displacement amount equal pump shaft 2 rotation the radially maximum jitter amount produced, cross Spielpassung between the annular sealing surface of described floating ring 4 and 5 two ports of impeller corresponding with it, the internal diameter that is floating ring 4 is less than corresponding impeller 5 port outside diameter, and pressure ring 8, sealing seat 9 internal surfaces are provided with the release groove 10 that step forms the elastic deformation amount who holds floating ring 4.The friction factor of impeller 5 two the port annular sealing surfaces corresponding with floating ring 4 endoporus is less than or equal to 0.1, and this example is 0.08.
When pump shaft 2 rotation, floating ring 4 i.e. hold relative with pump shaft 2, guarantee that reflux fluid can not have leakage rate herein; Although what floating ring 4 was relative with pump shaft 2 holds tightly, the friction factor of floating ring 4 bore areas is little, so radial force is very little, with the energy of saving, compares and can ignore.
In the water pump operation process, because there is certain circular runout in pump shaft 2, the one side of circular runout protrusion is by floating ring 4 extruding, and its possibility bending or distortion, if it can also be extruded in release groove 10 amount of deformation greatly again; The recessed one side gone out of pump shaft 2 circular runouts, owing to crossing Spielpassung between the ring packing surface of contact at floating ring 4 and impeller 5 two ends, just stretch fully.Due to the flexible distortion of floating ring 4, it both can be held tightly relatively with pump shaft 2, can not produce very large surface friction drag again and consumed more energy, thereby reach the purpose that prevents that fluid from refluxing.
As shown in Figure 2 and Figure 3
,this water pump floating seal loop device has one by inlet segment 301, the pump housing 3 of the multistage pump that stage casing 302 and water exit end 303 form, stage casing 302 for multistage and every grade in be provided with impeller 5 and stator 13, pump cover 7 is installed on the pump housing 3, pass pump shaft 2 in the pump housing 3, on pump shaft 2, between adjacent impeller 5, cover has axle sleeve 6, pump shaft 2 is provided with bearing body part 12 and shaft joint 1, be set with pressure ring 8 on the annular sealing surface of impeller 5 front end inlet and on the annular sealing surface of axle sleeve 6, floating ring 4 and sealing seat 9, described floating ring 4 materials are by screw thread (or nail pressing), to connect floating ring 4 tightenings between elastic soft material (this example adopts ebonite) and pressure ring 8 and sealing seat 9, pressure ring 8 is identical with sealing seat 9 internal diameters, described floating ring 4 internal surfaces protrude pressure ring 8 and sealing seat 9 internal surfaces, protrude 1.05 times that distance is greater than the radially maximum jitter amount (this example is 0.3mm) produced when pump shaft 2 rotates and is less than described radially maximum jitter amount, this example is 1.04 times.Because adopting its bore areas of elastic soft material, floating ring 4 there is when radial displacement and maximum radial displacement amount equal pump shaft 2 and turn the radially maximum jitter amount produced, cross Spielpassung between described floating ring 4 endoporus and impeller 5 front end inlet annular sealing surfaces corresponding with it and axle sleeve 6 annular sealing surfaces, the internal diameter that is corresponding floating ring 4 is less than corresponding impeller 5 port outside diameter and axle sleeve 6 external diameters, and pressure ring 8, sealing seat 9 internal surfaces are provided with the release groove 10 that step forms the elastic deformation amount who holds floating ring 4.The impeller 5 front end inlet annular sealing surfaces corresponding with floating ring 4 endoporus and the friction factor of axle sleeve 6 annular sealing surfaces are less than or equal to 0.1, and this example is 0.05.
As Fig. 1, shown in Fig. 4, this water pump floating seal loop device has the pump housing 3 of a double suction pump, pump shaft 2, impeller 5, pump cover 7 is installed on the pump housing 3, pump shaft 2 is provided with axle sleeve 6, bearing body part 12 and shaft joint 1, be set with pressure ring 8 on the annular sealing surface of 5 two ports of impeller, floating ring 4 and sealing seat 9, pressure ring 8, between sealing seat 9, by bolt 11 connections and floating ring 4, be arranged on therebetween, described floating ring 4 materials are wear-resisting hard material, adopt copper, steel, ring tetrafluoroethylene etc., pressure ring 8 is identical with sealing seat 9 internal diameters, described floating ring 4 internal surfaces protrude pressure ring 8 and sealing seat 9 internal surfaces, describedly protrude the radially maximum jitter amount (this example is 0.25mm) produced when distance is greater than the pump shaft rotation and be less than or equal to 1.05 times of described radially maximum jitter amount, this example is 1.05 times.There is radial sliding clearance and described radial sliding clearance between described floating ring 4 outer peripheral surfaces and sealing seat and be greater than the maximum radial jerk value that pump shaft when rotation produces, make the floating ring bore area there is the radially maximum jitter amount produced when radial displacement and maximum radial displacement amount equal the pump shaft rotation.Having axial sliding clearance and described axial sliding clearance between floating ring and sealing seat, pressure ring is 0.10-0.25mm, and this example is 0.15mm.
Floating ring 4 outer rims be provided with annular boss 401 and be stuck in pressure ring 8 and seal ring 9 between, described sealing seat 9, pressure ring 8 bore areas are provided with circular groove 901,801, to increase flow resistance, reduce leakage rate.Described floating ring 4 bore areas and floating ring 4 are less than or equal to 0.1 with the friction factor of the surface of contact of sealing seat 9 and pressure ring 8, and this example is 0.06.
During water pump operation, fluid enters the pump housing 3, is discharged by the outlet of water pump from the import of water pump, and during pump shaft 2 circular runout, floating ring 4 also has the radial-play of equivalent, makes not swipe between them; Floating ring 4 is along with the variation of pressure can be at axial free play.That is to say, floating ring 4 is slide members relatively freely, and it can, moving freely of trace radially arranged, also can axially move freely.Because floating ring 4 is provided with annular boss 401, increased and crossed flow resistance, even the pressure of exit of pump is very large, fluid reflux part between the annular sealing surface of floating ring 4 and impeller 4 substantially without leakage, leakage rate is seldom perhaps arranged, due to the pressure of axial reflux fluid by floating ring 4 with together with pressure ring 8 has been pressed in, at floating ring 4 axial components, be also substantially without leaking, even a small amount of leak fluid is arranged, produce turbulent flow and change hydrodynamic pressure through annular boss 401 and circular groove 901,801, also make leakage rate greatly reduce, greatly improved the efficiency of water pump.Through calculating and actual the detection, the floating ring power consumption is between 1-2% (the water pump later stage also can not surpass 2%) greatly, and pump energy saving can reach 3% left and right early stage, and the water pump later stage is energy-conservation can reach 10-15%.
As Fig. 2, shown in Fig. 4, this water pump floating seal loop device has one by inlet segment 301, the pump housing 3 of the multistage pump that stage casing 302 and water exit end 303 form, stage casing 302 for multistage and every grade in be provided with impeller 5 and stator 13, pump cover 7 is installed on the pump housing 3, pass pump shaft 2 in the pump housing 3, on pump shaft 2, between adjacent impeller 5, cover has axle sleeve 6, pump shaft 2 is provided with bearing body part 12 and shaft joint 1, be set with pressure ring 8 on the annular sealing surface of impeller 5 front end inlet and on the annular sealing surface of axle sleeve 6, floating ring 4 and sealing seat 9, pressure ring 8, between sealing seat 9, by bolt 11 connections and floating ring 4, be arranged on therebetween, described floating ring 4 materials are wear-resisting hard material, adopt copper, iron, ring tetrafluoroethylene etc., pressure ring 8 is identical with sealing seat 9 internal diameters, described floating ring 4 internal surfaces protrude pressure ring 8 and sealing seat 9 internal surfaces, describedly protrude the radially maximum jitter amount (this example is 0.35mm) produced when distance is greater than pump shaft 2 rotation and be less than or equal to 1.05 times of described radially maximum jitter amount, originally be embodied as 1.01 times.There is the maximum radial jerk value produced when radial sliding clearance and described radial sliding clearance are greater than pump shaft 2 rotation between described floating ring 4 outer peripheral surfaces and sealing seat 9, make floating ring 4 bore areas there is the radially maximum jitter amount produced when radial displacement and maximum radial displacement amount equal the pump shaft rotation.Having axial sliding clearance and described axial sliding clearance between floating ring 4 and pressure ring 8, sealing seat 9 is 0.10-0.25mm, and this example is 0.10mm.
Floating ring 4 outer rims be provided with annular boss 401 and be stuck in pressure ring 8 and seal ring 9 between, described sealing seat 9, pressure ring 8 bore areas are provided with circular groove 901,801, to increase flow resistance, reduce leakage rate.Described floating ring 4 bore areas and floating ring 4 are less than or equal to 0.1 with the friction factor of the surface of contact of sealing seat 9 and pressure ring 8, and this example is 0.09.
As Fig. 5, this water pump floating seal loop device has a single-stage pump
's the pump housing 3, pump shaft 2, impeller 5, pump shaft 2 is provided with axle sleeve 6, bearing body part 12 and shaft joint 1, be set with pressure ring 8, floating ring 4, sealing seat 9 on the annular sealing surface of impeller 5 front end inlet, the structure of described pressure ring 8, floating ring 4, sealing seat 9 is as embodiment 1, embodiment 3.
Claims (9)
1. a water pump floating seal loop device, comprise the pump housing, pump shaft, be arranged on the impeller in the pump housing, be arranged on the axle sleeve on pump shaft, it is characterized in that: on impeller end choma shape sealing surface or on impeller port and axle sleeve annular sealing surface, be set with pressure ring, floating ring, sealing seat, wherein floating ring is between pressure ring and sealing seat, sealing seat is identical with the pressure ring internal diameter, described floating ring bore area protrudes sealing seat and pressure ring internal surface and 1.05 times of the radially maximum jitter amount that produces when protruding the radially maximum jitter amount produced when distance is greater than the pump shaft rotation and being less than or equal to the pump shaft rotation, the floating ring bore area has radial displacement and the maximum radial displacement amount equals when pump shaft rotates the radially maximum jitter amount produced.
2. water pump floating seal loop device according to claim 1, it is characterized in that: described floating ring material is elastic soft material, described floating ring endoporus and the impeller end choma shape sealing surface corresponding with it or with its corresponding impeller port and axle sleeve annular sealing surface between cross Spielpassung, be that the internal diameter that the internal diameter of floating ring is less than corresponding impeller port outside diameter or floating ring is less than corresponding impeller port outside diameter and axle sleeve external diameter, sealing seat, pressure ring internal surface are provided with the elastic deformation amount's who holds floating ring release groove.
3. water pump floating seal loop device according to claim 1, it is characterized in that: described floating ring is wear-resisting hard material, and have the maximum radial jerk value produced when radial sliding clearance and described radial sliding clearance are greater than the pump shaft rotation between floating ring outer peripheral surface and sealing seat, having axial sliding clearance and described axial sliding clearance between floating ring and sealing seat, pressure ring is 0.10-0.25mm.
4. water pump floating seal loop device according to claim 3, it is characterized in that: the axial sliding clearance of floating ring and sealing seat is 0.10-0.15mm.
5. water pump floating seal loop device according to claim 3 is characterized in that: the floating ring outer rim be provided with annular boss and be stuck in pressure ring and seal ring between.
6. water pump floating seal loop device according to claim 3, it is characterized in that: the bore area of described sealing seat, pressure ring is provided with circular groove.
7. water pump floating seal loop device according to claim 2 is characterized in that: the impeller end choma shape sealing surface corresponding with the floating ring bore area or be less than or equal to 0.1 with impeller port corresponding to floating ring and the friction factor of axle sleeve annular sealing surface.
8. water pump floating seal loop device according to claim 3 is characterized in that: described floating ring bore area and be less than or equal to 0.1 with the friction factor of the surface of contact of pressure ring and sealing seat.
9. water pump floating seal loop device according to claim 1, it is characterized in that: described maximum radial jerk value is 0.05mm-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027630 CN203239622U (en) | 2013-01-20 | 2013-01-20 | Floating sealing ring device for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320027630 CN203239622U (en) | 2013-01-20 | 2013-01-20 | Floating sealing ring device for water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239622U true CN203239622U (en) | 2013-10-16 |
Family
ID=49316929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320027630 Expired - Fee Related CN203239622U (en) | 2013-01-20 | 2013-01-20 | Floating sealing ring device for water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203239622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104542A (en) * | 2013-01-20 | 2013-05-15 | 锦州重型水泵有限公司 | Water pump floating sealing ring device |
-
2013
- 2013-01-20 CN CN 201320027630 patent/CN203239622U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104542A (en) * | 2013-01-20 | 2013-05-15 | 锦州重型水泵有限公司 | Water pump floating sealing ring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014190825A1 (en) | Pump-conveyed fluid dynamic-pressure mechanical seal | |
| CN103104542A (en) | Water pump floating sealing ring device | |
| CN101892989B (en) | High-pressure double suction pump | |
| CN201751587U (en) | Sealing device for centrifugal pump impeller wear ring | |
| CN203239622U (en) | Floating sealing ring device for water pump | |
| CN103321968B (en) | A kind of high speed pump with preposition inducer | |
| CN101776087A (en) | Rotation shell pump adopting spiral labyrinth dynamic seal | |
| CN207687039U (en) | A kind of novel middle-open pump impeller seal ring seal structure | |
| CN215672846U (en) | Reverse suction section pressure relief sealing structure of self-balancing multistage centrifugal pump | |
| CN203717428U (en) | Centrifugal pump with rubber ring | |
| CN201739221U (en) | Rotary-shell pump adopting rectangular spiral labyrinth dynamic sealing on impeller hub | |
| CN201386660Y (en) | Centrifugal water pump for automobile | |
| CN114017347A (en) | Sectional type multistage centrifugal pump without balancing device | |
| CN201751580U (en) | High-pressure double-suction pump | |
| CN106762677B (en) | Multistage split pump | |
| CN202732455U (en) | Combined-type sealing structure of pump | |
| CN102720696A (en) | Preheating water pump | |
| CN207004941U (en) | A kind of balancing drum mechanism of pump | |
| CN201358921Y (en) | Energy-saving horizontal multi-stage centrifugal pump | |
| CN101504001A (en) | Energy-saving horizontal multi-stage centrifugal pump | |
| CN209743228U (en) | Sealing structure of sectional type multistage pump | |
| CN202065228U (en) | Combined type spiral counter-force balanced sealing device | |
| CN210686415U (en) | Centrifugal water pump sealing ring | |
| CN212563669U (en) | Vertical double entry pump of direct-connected type | |
| CN210087671U (en) | Runner type liquid film opening ring device of chemical centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20170120 |