CN2216609Y - Full-sealing pump - Google Patents
Full-sealing pump Download PDFInfo
- Publication number
- CN2216609Y CN2216609Y CN 94246405 CN94246405U CN2216609Y CN 2216609 Y CN2216609 Y CN 2216609Y CN 94246405 CN94246405 CN 94246405 CN 94246405 U CN94246405 U CN 94246405U CN 2216609 Y CN2216609 Y CN 2216609Y
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- China
- Prior art keywords
- impeller
- bearing
- case
- pump
- stator
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- 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 relates to a full-sealing pump which is used for conveying the corrosive medium. The utility model comprises a pump housing, a stator, an impeller, a rotor, and an isolating part, wherein, the stator, the impeller, the rotor, and the isolating part are arranged in the pump housing. The utility model is characterized in that the isolating part is composed of a reinforcing element and an isolating element. The upper side of the impeller is provided with a rolling bearing which is arranged on a fixed shaft. The fixed shaft is supported on a bearing seat which is arranged in order to cause a front and a back housings to be formed into the pump housing. An isolating bearing sleeve which is connected with the isolating part is arranged between a back bearing seat and a shaft. Both ends of the impeller are respectively provided with an axial support ring. The utility model has the advantages of small air gap between the stator and the rotor, stable and reliable running, and good heat radiation. The utility model can be applied to industries such as a chemical industry, a metallurgy, a food product, a pharmacy, etc.
Description
The utility model relates to a kind of pump, particularly a kind of glandless motor pump that is suitable for carrying aggressive medium.
Existing disc type electric machine oil pump is a kind of glandless motor pump, but because of the stator and the rotor of its motor all is immersed in the liquid that is transferred, so can not be used to carry Korrosionsmedium.Usually for the disc type pump of isolating part is housed between the motor stator and rotor, its efficient is relevant with the thickness of isolating part with power factor, and isolating part thickness is big more, and the air gap between the motor stator and rotor is just big more, the motor stator size also just increases, and the efficient of pump and power factor are just low more.Reducing air gap will reduce the thickness of isolating part, but isolating part too book cause leakage accident because of stator and friction rotor easily again.Therefore the major technique key of disc type pump is how not only to reduce the air gap between the stator and rotor but also guarantee that its running is reliable.Chinese patent CN87102163 discloses a kind of pump, it comprises a pump case with medium inlet/outlet, one is configured in the impeller that has spin axis in the pump case, a rotor and the stator that is installed in the pump case that is configured on the impeller, it is characterized in that also being equipped with on the pump case isolating part that impeller and stator are separated, impeller is by means of hydraulic bearing supporting rotation.This pump is a glandless motor pump, and can be used for carrying aggressive medium.But because of its isolating part is the ring-shaped pottery plate, be bonded on the resin of sealed stator, and the ring-shaped pottery plate of being processed always has certain thickness, be difficult to reach below the 1mm, this air gap between expanded motor stator and the rotor that is bound to is so be difficult to obtain high-capacity pump.This pump impeller adopts hydraulic bearing in addition, and hydraulic bearing will consume certain energy on the contrary when pump runs up, and the kinetic pressure that is produced strengthens the axial force that impeller produces, and increases the wearing and tearing of surface friction drag and thrust-bearing, so be unsuitable for using in the disc type pump.The stator and rotor resin-encapsulated of this pump in addition, this both had been unfavorable for heat radiation, was difficult to again realize that especially stator dimensions is bigger on technology when adopting the fluororesin encapsulation, and was for example greater than 250mm, just more difficult.
It is little, safe and reliable to operation that the purpose of this utility model provides between a kind of motor stator and the rotor air gap, the glandless motor pump of good heat dissipation effect.
For achieving the above object, the utility model is achieved in that a kind of glandless motor pump, it comprises a pump case with medium import and outlet, an impeller that is disposed in the pump case, a rotor that is encapsulated on the impeller, be installed in the stator that matches with rotor in the pump case and be installed on the pump case isolating part that impeller and stator are separated, wherein said pump case is made up of the rear case of front case with medium import and outlet and installation supporting with it, said isolating part is made up of reinforcer and separator, it is between front case and rear case, before impeller and stator are laid respectively at, in the rear case, said impeller hub is provided with rotary bearing, this rotary bearing is made up of at least three arced ceramic bearing shells and fluoroplastic overcoat, and rotary bearing is installed on the stationary axle, before the two ends of this stationary axle are bearing in respectively, on the inboard set bearing support of rear case, be provided with the isolation bearing cover for seat that is connected with isolating part, the left side of impeller between the bearing support of rear case and the stationary axle, right-hand member is equipped with the axially mounting circle.
Advantage of the present utility model is the composite structure that its isolating part adopts reinforcer and separator to combine, select suitable material, the reinforcer of design suitable thickness both can satisfy isolating part intensity and structural requirement, select suitable material to make the technological requirement that separator can satisfy fed sheet of a media again, can do isolating part very thinly at the relative position of stator and rotor like this, reduce the air gap between stator and the rotor, can improve the efficient and the power factor of pump, obtain high-capacity pump, and the isolating part preparation process is simple and convenient.Impeller adopts two fulcrum structures of rotary bearing and the supporting installation of axle, and be provided with the axially mounting circle, increase the axial length of impeller supporting, rotor rotation is not steadily had rocks, can not rub with isolating part, when the thickness of isolating part at the relative position of stator and rotor reduces to hour, pump still can reliable and stablely turn round.In addition, stator need not be resin-sealed, good heat dissipation effect.Pump case is made up of forward and backward housing, also is convenient to process and install the interior parts of pump case.
Now in conjunction with the accompanying drawings and embodiments the utility model is done specific descriptions:
Fig. 1 is first embodiment's of a glandless motor pump described in the utility model longitudinal section schematic representation;
Fig. 2 is first embodiment's of isolating part a longitudinal section schematic representation;
Fig. 3 is 1 partial enlarged drawing of Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is second embodiment longitudinal section schematic representation of isolating part;
Fig. 6 is the 3rd an embodiment longitudinal section schematic representation of isolating part;
Fig. 7 is the 4th an embodiment longitudinal section schematic representation of isolating part;
Fig. 8 is the longitudinal section schematic representation of rotary bearing;
Fig. 9 is the side view of Fig. 8;
Figure 10 is second embodiment's of a glandless motor pump described in the utility model longitudinal section schematic representation;
Figure 11 is the 3rd embodiment's of a glandless motor pump described in the utility model longitudinal section schematic representation;
Figure 12 is the 4th embodiment's of a glandless motor pump described in the utility model longitudinal section schematic representation.
As shown in Figure 1, a kind of glandless motor pump, it comprises a pump case 12 of being made up of the rear case 1 of front case 6 with medium import 9 and outlet 5 and bolt connection supporting with it, an impeller 8 that is configured in the front case 6, mold pressing is encapsulated in the rotor 7 on the impeller 8, be installed in the stator 16 that matches with rotor 7 in the rear case 1, be installed between front case 6 and the rear case 1 isolating part 3 that impeller 8 and stator 16 are separated, the wheel hub of impeller 8 is provided with rotary bearing 13, this rotary bearing 13 is installed on the stationary axle 14, impeller 8 can be rotated around axle 14, the two ends of axle 14 are bearing in respectively on front case 6 and the rear case 1 inboard set bearing support 10 and 15, be provided with the isolation bearing cover for seat 36 that with isolating part 3 be connected, the left side of impeller 8 with axle between 14 at bearing support 15, right-hand member is respectively equipped with axially mounting circle 11.
As shown in Figure 2, annular isolation parts 3 are made up of metal reinforcement 2 and fluoroplastic separator 4, be connected with the external part of a projection in the central authorities of isolating part 3, its shape, size and rear case 1 inboard set bearing support 15 match, and this projection external part is as the isolation bearing cover for seat 36 between bearing support 15 and the axle 14.Isolating part 3 moulding process that have isolation bearing cover for seat 36 are earlier the reinforcer (sheetmetal) 2 that processes to be put into mould and press, in mould, put into an amount of fluoroplastic then again, and by desired molding temperature of this plastics and the pressure press molding of heating.Adding the thickness that makes man-hour separator 4 have minimum at stator 16 and rotor 7 relative positions, abut against during installation on the stator 16, the air gap between stator 16 and the rotor 7 is dwindled.Other positions of separator 4 are thicker, to satisfy requirement on intensity and the structure.For ease of in mould reinforcer 2 being compressed, the external diameter of reinforcer 2 can be slightly larger than separator 4.For assurance fluoroplastic thin layer can bear the pressure that is transferred medium, and can work stably in a long term, must make fluoroplastic become whole with sheet metal stamping, and can select permeability magnetic material for use, for example the High Strength Low Alloy Steel thin plate is made reinforcer.For making reinforcer 2 connect more firmly and reducing eddy current loss in the metal reinforcement 2 with separator 4, can on metal reinforcement 2, hole 17, hole 17 can be a taper hole, also can be circular hole (seeing Fig. 3 and Fig. 4).Hole 17 can be uniform, also can be some more at the isolating part thicker part, and thinner, stressed larger part is less.Theory analysis and evidence, when isolating part thickness hour, after reinforcer 2 adopted the magnetic conduction sheet metals, electrical property was better than non-magnetic corrosion resistant plate, its effect is equivalent to electric crack and reduces, decrease is equivalent to thickness of slab.
As shown in Figure 5, reinforcer 2 is a glass fibre reinforced plastics in the belt isolating part 3, separator 4 still is fluoroplastic, the centre accompanies one deck glass fibre cloth 19, its moulding process is earlier the more bigger glass fibre cloth 19 of external diameter to be put into mould and compress, putting into fluoroplastic then heats and turns at another side mold pressing other high-intensity resin, side such as the epoxy glass laminate of glass fibre cloth 19 after the compression and moulding again.In the compression molding process, make isolating part 3 annular groove all be arranged, to reduce the air gap between stator and rotor in the bi-side of relative rotor 7 and stator 16.The central authorities of isolating part 3 are connected with the external part of projection equally as isolation bearing cover for seat 36.
As shown in Figure 6, reinforcer 2 is a ring metal sheet in the isolating part 3, as general steel plate, Low Alloy Steel Plate, corrosion resistant plate, the combination of titanium steel plate or two kinds of different metal plates, isolating plate 4 is annular fluoroplastic thin plate, there is a fluoroplastic isolation bearing cover for seat 36 in central authorities, and the three compresses with nut 21, and seal with seal ring 22.The material of seal ring 22 is rubber outsourcing fluoroplastic or fluoroplastic.
According to the needs of pumped medium, as making isolating part 3, just can unite two into one reinforcer 2 and separator 4 with stainless steel or titanium, adopt a kind of stainless steel or titanium to make.Equally also can adopt a kind of plastics and a kind of fiber reinforced plastic to make.As shown in Figure 7, which floor fluoroplastic to make separator 4 with in this isolating part 3, which floor glass fiber cloth is made reinforcer 2, is one deck fluoroplastic in the both sides of isolating part 3 promptly, accompanies the alternating layer of glass fiber cloth and fluoroplastic between these two-layer fluoroplastic.Central authorities at these annular isolation parts 3 are connected with isolation bearing cover for seat (not shown) equally.This isolating part adopts glass fiber cloth and fluoroplastic through die forming equally.The thickness of fluoroplastics layer 4 is 0.15mm, and the thickness of glass fibre layer of cloth 2 is 0.1mm.
In the various embodiments described above, isolating part 3 allows minimal thickness at stator 16 and rotor 7 relative positions be 0.5～0.8mm.
As Fig. 8 and shown in Figure 9, rotary bearing 13 is made by at least three arced ceramic bearing shells 25 and 26 mold pressings of fluoroplastic overcoat.Because the bulk ceramics brearing bore is difficult to meet the requirements of degree of finish, be convenient to polish endoporus after being divided into several, also be convenient to the runner of processing cooling-lubricant in bearing.Bearing shell 25 can adopt ceramic composite, as Al
2O
3Fiber, Al
2O
3The mixture of powder, graphite and fluoroplastic.Adopt identical ceramic composite to make with the axle 14 that bearing 13 cooperates.Its advantage is that axle 14 and bearing 13 are corrosion-resistant, wear-resisting, long service life.Can certainly adopt solid box.
Embodiment as shown in figure 10 is a kind of glandless motor pump that has cooling unit, promptly outside the rear case 1 of pump, chuck 29 is housed, chuck 29 is provided with intake pipe 32 and outlet pipe 28, on rear case 1 rear wall, be provided with heat pipe or circulating cooling pipe 30, the one closed end is arranged in the heat-loading body 27 of housing 1, as transformer oil or be lower than 100 ℃ pure water, another closed end stretches out rear case 1 and is positioned at chuck 29.Utilize this pipe 30 to make heat-loading body 27 in chuck 29, carry out heat exchange with cooling water 31.Obviously also can utilize heat-transfer pipe 30 that heat-loading body is directly dispelled the heat in atmosphere, and not establish chuck 29.Certainly design chuck 29 will satisfy the designing requirement of heat exchanger during heat-transfer pipe 30.
Embodiment as shown in figure 11 is a kind of glandless motor pump with self-absorption function, its front case 6 is assembled with connection seat 34 usefulness bolts by housing 33, connection seat 34 is between impeller 8 and housing 33, housing 33 and impeller 8 are separated, connection seat 34 is provided with stator 35, establishes medium import 9 on the housing 33 and is positioned at the top of impeller 8 center lines.The volume of housing 33 is bigger, has the air-water separation chamber function, can store certain water gaging in housing 33, makes the major part of impeller 8 under water all the time.Start first in the outlet 5 go to housing 33 and inject liquid, have liquid to overflow to import 9, starting the back just can be in the following pump of the synergy of impeller 8, connection seat 34 and housing 33 and the discharge of the gas in the pipeline, in the automatic suction pump of liquid.Just need not to irritate once more liquid when starting once more.
Stability when guaranteeing that rotor high-speed rotates, can increase the length of impeller 8 wheel hubs 24 and rotary bearing 13 during the design glandless motor pump as far as possible, the two ends of wheel hub 24 and rotary bearing 13 are prolonged, and stretch in bearing support 15 and 10, the bearing support 10 of front case 6 is designed to streamlined, when bearing support 10 is stretched in wheel hub 24 prolongations, make medium import 9 runners become the streamlined of cross section even variation, play the inlet whirl effect that water conservancy diversion is eliminated medium.The muscle sheet 23 of fixed bearing block 10 is at least three (as shown in figure 12) simultaneously.
Utilize glandless motor pump provided by the utility model to can be used for the medium of carrying corrosion or requiring height to keep a public place clean, as acid, aqueous slkali, toxic liquid, food and pharmaceutical purpose liquid.Can be widely used in rare-earth smelting, chemical industry, plating, food, pharmacy, liquid waste processing and environmental protection industry (epi).
Claims (5)
1, a kind of glandless motor pump, comprise a pump case (12) with medium import (9) and outlet (5), an impeller (8) that is disposed in the pump case (12), a rotor (7) that is encapsulated on the impeller (8), be installed in the stator (16) that matches with rotor (7) in the pump case (12) and be installed in pump case (12) and go up the isolating part (3) that impeller (8) and stator (16) are separated, it is characterized in that said pump case (12) forms by having medium import (9) and the outlet front case (6) of (5) and the rear case (1) of installation supporting with it, said isolating part (3) is made up of reinforcer (2) and separator (4), it is positioned between front case (6) and the rear case (1), impeller (8) and stator (16) are laid respectively in front case (6) and the rear case (1), the wheel hub (24) of said impeller (8) is provided with rotary bearing (13), this rotary bearing (13) is made up of at least three arc bearing shells (25) and fluoroplastic overcoat (26), rotary bearing (13) is installed on the stationary axle (14), the two ends of stationary axle (14) are bearing in respectively on front case (6) and rear case (1) the inboard set bearing support (10) and (15), be provided with the bearing sleeve (36) that links to each other with isolating part (3) between bearing support (15) and the stationary axle (14), the two ends of impeller (8) are provided with axially mounting circle (11).
2, according to the said a kind of glandless motor pump of claim 1, it is characterized in that said reinforcer (2) is a ring metal sheet, separator (4) is an annular fluoroplastic thin plate, the total thickness of two plates is 0.5～0.8mm, they and a fluoroplastic isolation bearing cover for seat (36) are by nut (21), and fluoroplastic seal ring (22) is tightly connected and forms isolating part (3).
3, according to claim 1 or 2 said a kind of glandless motor pumps, it is characterized in that the outer chuck (29) of bringing water pipe (32) and outlet pipe (28) into that is provided with of said rear case (1), rear case (1) rear wall is provided with heat pipe (30), the one end is positioned at rear case (1), and its other end stretches out rear case (1) and is positioned at chuck (29).
4, according to claim 1 or 2 said a kind of glandless motor pumps, it is characterized in that said front case (6) is made up of housing (33) and connection seat (34), connection seat (34) is positioned between impeller (8) and the housing (33), connection seat (34) is provided with stator (35), water intake (9) is located on the housing (33), and is positioned at the top of impeller (8) center line.
5, according to claim 1 or 2 said a kind of glandless motor pumps, it is characterized in that the wheel hub (24) of said impeller (8) and the two ends of rotary bearing (13) stretch in bearing support (10) and (15), bearing support (10) is streamlined, medium inlet channel (37) is the streamlined of cross section even variation, and the muscle sheet (23) of fixed bearing block (10) is at least three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246405 CN2216609Y (en) | 1994-12-03 | 1994-12-03 | Full-sealing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246405 CN2216609Y (en) | 1994-12-03 | 1994-12-03 | Full-sealing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2216609Y true CN2216609Y (en) | 1996-01-03 |
Family
ID=33851902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94246405 Expired - Fee Related CN2216609Y (en) | 1994-12-03 | 1994-12-03 | Full-sealing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2216609Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782063A (en) * | 2014-12-22 | 2016-07-20 | 杭州三花研究院有限公司 | Electrically-driven pump |
| CN105889114A (en) * | 2016-04-12 | 2016-08-24 | 江苏大学 | High-temperature hot water circulating pump suspension body based on heat pipe cooling |
| CN106555765A (en) * | 2015-09-30 | 2017-04-05 | 杭州三花研究院有限公司 | Electric drive pump |
-
1994
- 1994-12-03 CN CN 94246405 patent/CN2216609Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782063A (en) * | 2014-12-22 | 2016-07-20 | 杭州三花研究院有限公司 | Electrically-driven pump |
| CN106555765A (en) * | 2015-09-30 | 2017-04-05 | 杭州三花研究院有限公司 | Electric drive pump |
| CN105889114A (en) * | 2016-04-12 | 2016-08-24 | 江苏大学 | High-temperature hot water circulating pump suspension body based on heat pipe cooling |
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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 |