CN203384060U - Shield pump - Google Patents
Shield pump Download PDFInfo
- Publication number
- CN203384060U CN203384060U CN201320472453.5U CN201320472453U CN203384060U CN 203384060 U CN203384060 U CN 203384060U CN 201320472453 U CN201320472453 U CN 201320472453U CN 203384060 U CN203384060 U CN 203384060U
- Authority
- CN
- China
- Prior art keywords
- rotor
- strut
- pump
- radome
- stator
- 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 - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model provides a shield pump, belongs to the technical field of pumps and solves the problems that an existing shield pump structure is complex, a rotating shaft is required to be connected between a stator and a rotor and the rotating shaft is poor in sealing performance. The shield pump comprises a pump head and a motor. A pump cavity, a liquid inlet channel and a liquid outlet channel are arranged in the pump head, and the liquid inlet channel and the liquid outlet channel are communicated with the pump cavity. The motor comprises a shell, the rotor and the stator fixed in the shell. The shell is fixedly connected with the pump head. The rotor is fixedly connected with a plurality of vanes which are arranged in the pump cavity. A shield cover is arranged between the stator and the rotor and separates the pump cavity from an inner cavity of the shell in a sealed mode. The shield cover is provided with a spherical concave surface. The center of the bottom of the concave surface protrudes outwards to form a supporting assembly. The supporting assembly and the shield cover are of an integrated structure, and the supporting assembly can support the rotor to rotate relative to the stator. Due to the fact that the rotating shaft is not required to connect the rotor and the stator of the motor, a large number of parts are eliminated, the sealing effect is improved, fluid is effectively prevented from entering the shell of the motor from a gap at the rotating shaft, and the structure is simple and compact.
Description
Technical field
The utility model belongs to the pump technical field, relates to a kind of canned motorpump.
Background technique
The driving of Ordinary Centrifugal Pumps is by coupling, the impeller shaft of pump to be connected with electric drive axle, impeller is rotated together with motor and work.And canned motorpump is a kind of unprssurized pump, pump and drive motor all are sealed in one and are pumped in the pressurized container that medium is full of, and this pressurized container only has static seal, and rotating magnetic field is provided and is driven rotor by an electric wire group.This structure has been cancelled the sealing device for rotary shaft that conventional centrifugal pump has, therefore can accomplish fully without leaking.Canned motorpump connects together pump and motor, and the rotor of motor and the impeller of pump are fixed on the same axis, utilizes housing that the rotor of motor and stator are separated, and rotor turns round in the medium be transferred, and its power is passed to rotor by stator field.Therefore, canned motorpump often is used to carry precious liquid or be with radioactive liquid, is widely used in the fields such as civilian, industry and military project space flight.
Existing pipeline canned motor pump, as Chinese patent application (application number: 200920075244.0) disclose a kind of pipeline canned motor pump with inner circulation structure, the shield electric machine be connected with the pump housing by the pump housing forms, described shield electric machine comprises outer ring stator module and outer ring rotor assembly, on described stator, cover has stator can, on described rotor, cover has Rotor can, there is gap between the stator can Rotor can, axle in described rotor assembly has through hole, the two ends of described rotor assembly are provided with upper and lower two axle sleeves, arranged outside at rotor axle sleeve has upper and lower two graphite bearings, arranged outside at graphite bearing has the metal (upper seat, upper bearing bracket has an inner chamber, step has a filter vat, the described pump housing comprises pump housing import, pump housing outlet and the blade wheel chamber be connected with pump housing import, pump housing outlet, described blade wheel chamber has the impeller driven by shield electric machine, blade wheel chamber has an impeller inlet and an impeller outlet, the impeller root has an impeller balance hole, the impeller back side has an impeller back of the body choma, between step and impeller back of the body choma, a cavity is arranged, rotor shaft is penetrated with the circulation through hole, and an end of this circulation through hole is communicated with impeller inlet, and the other end is communicated with the inner chamber of upper bearing bracket, be respectively equipped with groove on upper and lower graphite bearing, gap between Rotor can and stator can is by being arranged on the cavity between groove on lower graphite bearing and step and impeller back of the body choma, and being communicated with of the inner chamber by the groove on upper graphite bearing and upper bearing bracket, and step is connected with wheeled by impeller balance hole with the cavity between impeller back of the body choma.This pipeline canned motor pump structure is comparatively numerous and diverse, and component are various, between stator and rotor, needs rotating shaft to be connected, and rotating shaft place needs the obturator of pad, seal ring and so on, therefore exists and reveals hidden danger.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of canned motorpump, and its rotor is nested on radome, does not need rotating shaft to connect, and has solved rotating shaft place fully and has had the problem sealed.
The purpose of this utility model can realize by following technical proposal: a kind of canned motorpump, comprise pump head, motor, and be provided with pump chamber, the feed pathway be connected with pump chamber and liquid outlet channel in described pump head; It is characterized in that, described motor comprises housing, rotor and is fixed on the stator in housing, described housing is fixedly connected with pump head, be fixed with some blades on described rotor and be arranged in pump chamber, between described stator and rotor, be provided with pump chamber and the airtight radome separated of housing inner chamber, described radome has concave surface spherical in shape, the supporting component that the outwardly formation in described concave bottom center and radome integral structure and energy support rotor relative stator are rotated.
Electric machine casing is fixedly connected with pump head, stator is fixed in electric machine casing, because the rotor of motor is located in the spherical concave surface of radome, radome coordinates the formation pump chamber with pump head, supporting component is connected with the concave surface of radome, can be so that rotor, around stator rotation, can guarantee again the sealing of pump chamber.Between the utility model stator and rotor, do not need rotating shaft to be connected, this incomplete structure a large amount of component, improved the sealing effect of pump chamber, effectively prevent that fluid from entering into the housing inner chamber of motor from the rotating shaft gap, simple and compact for structure, good sealing effect.
In above-mentioned canned motorpump, described supporting component comprises the strut of protruding hollow, and described strut is by the outside drawing and forming in radome bottom, and described supporting bar top is connected with rotor by linkage structure.Strut is stretched outwardly by radome, and seamless link between radome, good sealing effect, and linkage structure makes rotor rotate around strut.
In above-mentioned canned motorpump, described supporting component comprises the strut of protruding hollow, the concave surface center of described radome has protruding connecting base, and described strut is socketed on connecting base and by welding and is connected, and described supporting bar top is connected with rotor by linkage structure.Weld the raising fastness that is connected, and improved the sealing effect of strut and joint.Rotor rotates around strut, and concave surface has the connecting base of extrusion modling, and radome is separated pump chamber and housing inner chamber, plays the effect of sealing pump chamber, prevents that the fluid in pump chamber from entering into inner cavity of motor shell.
In above-mentioned canned motorpump, described linkage structure comprises ceramic ball and has the graphite block of spherical groove, described rotor axis place has supported hole, described graphite block is fixed in supported hole, described ceramic ball is fixedly connected with an end of strut, ceramic ball embeds in spherical groove, and the other end of strut is fixedly connected with the concave surface of radome.By the mating reaction of ceramic ball and graphite block, can make the rotor relative stator rotate, between the ceramic ball of strut end and the spherical groove of graphite block, sphere coordinates, and compactedness is better, and sphere cooperation has simultaneously also improved the accuracy of the balance control of rotor; And strut is direct and concave surface is connected, and has improved the sealing effect of pump chamber.
In above-mentioned canned motorpump, it is conical that described strut is, and the afterbody of strut is enclosed within on connecting base and has the flange leant with spherical concave surface.The afterbody of strut has flared flange, has improved the area of contact with concave surface, forms double seal when strengthening stability, improves sealing effect, prevents that fluid retention from arriving in hollow connecting rod.
In above-mentioned canned motorpump, described rotor is hemisphere, has spherical back face and circular end surface, and described blade is connected on circular end surface.Rotor rotates and drives blade rotation, and the concave surface of hemispheric rotor and radome is complementary, more steady in rotation.Rotor and blade integral structure, be connected firmly, and blade is not easy to come off.
In above-mentioned canned motorpump, offer the counterweight hole on described spherical back face, described counterweight is provided with balancing weight in hole.By in the counterweight hole, increasing and decreasing balancing weight, reach the purpose of the balance of adjusting rotor.
In above-mentioned canned motorpump, offer annular seating on described pump head, be provided with seal ring in described annular seating, described seal ring and radome lean.Seal ring increases the sealing effect of pump chamber, prevents that fluid from flowing out with contacting gap of pump head from radome.
Compared with prior art, this pipeline canned motor pump has the following advantages:
1, between stator and rotor, radome is set, does not need rotating shaft to connect, good sealing effect, solved rotating shaft place fully and had sealing problem.
2, impeller is provided with the counterweight hole, can be proofreaied and correct the balance of impeller, has improved the balance of impeller, has guaranteed that pipeline canned motor pump can keep good running state all the time.
3, rotor and blade integral structure, simple in structure, and arrangement space is compact, reasonable, the volume less of the whole pump housing.
The accompanying drawing explanation
Fig. 1 is the structural representation of embodiment's one canned motorpump.
Fig. 2 is the structural representation of facing of rotor.
Fig. 3 is the plan structure schematic diagram of rotor.
Fig. 4 is the structure sectional view of embodiment's one radome.
Fig. 5 is the structure sectional view of embodiment's two radomes.
In figure, 1, pump head; 11, pump chamber; 12, feed pathway; 13, liquid outlet channel; 2, motor; 21, housing; 22, stator; 23, rotor; 231, spherical back face; 232, circular end surface; 233, supported hole; 234, counterweight hole; 3, blade; 4, balancing weight; 5, radome; 51, concave surface; 52, connecting base; 6, ceramic ball; 7, graphite block; 8, strut; 81, flange; 9, seal ring.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As shown in Figure 1, Figure 2, Figure 3, Figure 4, this canned motorpump comprises pump head 1, motor 2, is provided with pump chamber 11, the feed pathway 12 be connected with pump chamber 11 and liquid outlet channel 13 in pump head 1.Motor 2 comprises housing 21, rotor 23 and is fixed on the stator 22 in housing 21, and housing 21 is fixedly connected with pump head 1, and housing 21 1 ends embed in pump heads 1, both again by external connection screw overlap fix locked.Fluid enters into pump chamber 11 from feed pathway 12, and through the centrifugal action of rotor 23, fluid is discharged from liquid outlet channel 13 obtain centrifugal force in pump chamber 11 after.Rotor 23 is arranged in pump chamber 11, between stator 22 and rotor 23, is provided with pump chamber 11 and the airtight radome separated 5 of housing 21 inner chambers, and radome 5 has concave surface spherical in shape 51, and radome 5 embeds in stator 22, and the back side of radome 5 is resisted against on stator 22.Concave surface 51 bottom centre of radome 5 locate the supporting component that outwardly formation and radome 5 integral structures and energy support rotor 23 relative stator 22 are rotated, and supporting component makes rotor 23 relative stator 22 to rotate.
Specifically, supporting component comprises strut 8, and concave surface 51 centers of radome 5 have protruding connecting base 52, and strut 8 is socketed on connecting base 52 and by welding and is connected, and strut 8 tops are connected with rotor 23 by linkage structure.Linkage structure comprises ceramic ball 6 and has the graphite block 7 of spherical groove, rotor 23 places, axle center have supported hole 233, graphite block 7 is fixed in supported hole 233, ceramic ball 6 is fixedly connected with an end of strut 8, ceramic ball 6 embeds in spherical groove, and the other end of strut 8 is fixedly connected with the concave surface 51 of radome 5.By the mating reaction of ceramic ball 6, graphite block 7, can not break away from the top of strut 8 while making rotor 23 rotate, and between pottery and graphite block 7, friction factor is little, rotates more steady.
As shown in Figure 4, it is conical that strut 8 is, and the afterbody of strut 8 is enclosed within on connecting base 52 and has the flange 81 leant with spherical concave surface 51.Strut 8 is hollow structure, and inwall and connecting base 52 lean, and turns over all over leaning with the concave surface 51 of radome 5, form double seal, then, by being welded and fixed, compact structure is firm, and sealing effect is better.
As shown in Figure 2 and Figure 3, rotor 23 is hemisphere, has spherical back face 231 and circular end surface 232; Be fixed with some blades 3 on circular end surface 232, offer counterweight hole 234 on spherical back face 231, be provided with balancing weight 4 in counterweight hole 234.By increase and decrease balancing weight 4 in counterweight hole 234, counterweight hole 234 drive fits on balancing weight 4 and rotor 23, reach the purpose of the balance of adjusting rotor 23.In order to strengthen the sealing of pump chamber 11, offer annular seating on pump head 1, be provided with seal ring 9 in annular seating, seal ring 9 leans with radome 5.Prevent that fluid from flowing out with contacting gap of pump head 1 from radome 5.
Embodiment two
As shown in Figure 5, be the Placement of supporting component and radome 5 with embodiment one difference, embodiment two supporting component comprises the strut 8 of protruding hollow, and strut 8 is by the radome 5 outside drawing and formings in bottom, and strut 8 tops are connected with rotor 23 by linkage structure.Strut 8 and radome 5 seamless links, one-body molded, reduce manufacturing procedure and component, make structure compacter.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more been used 1, pump head; 11, pump chamber; 12, feed pathway; 13, liquid outlet channel; 2, motor; 21, housing; 22, stator; 23, rotor; 231, spherical back face; 232, circular end surface; 233, supported hole; 234, counterweight hole; 3, blade; 4, balancing weight; 5, radome; 51, concave surface; 52, connecting base; 6, ceramic ball; 7, graphite block; 8, strut; 81, flange; 9, the term such as seal ring, but do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. a canned motorpump, comprise pump head (1), motor (2), is provided with pump chamber (11), the feed pathway (12) be connected with pump chamber (11) and liquid outlet channel (13) in described pump head (1), it is characterized in that, described motor (2) comprises housing (21), rotor (23) and be fixed on the stator (22) in housing (21), described housing (21) is fixedly connected with pump head (1), be fixed with some blades (3) on described rotor (23) and be arranged in pump chamber (11), between described stator (22) and rotor (23), be provided with pump chamber (11) and housing (21) the airtight radome separated of inner chamber (5), described radome (5) has concave surface spherical in shape (51), described concave surface (51) bottom centre locates the supporting component that outwardly formation and radome (5) integral structure and energy support rotor (23) relative stator (22) are rotated.
2. canned motorpump according to claim 1, it is characterized in that, described supporting component comprises the strut (8) of protruding hollow, and described strut (8) is by the outside drawing and forming in radome (5) bottom, and described strut (8) top is connected with rotor (23) by linkage structure.
3. canned motorpump according to claim 1, it is characterized in that, described supporting component comprises the strut (8) of protruding hollow, concave surface (51) center of described radome (5) has protruding connecting base (52), described strut (8) is socketed in connecting base (52) above and is connected by welding, and described strut (8) top is connected with rotor (23) by linkage structure.
4. according to the described canned motorpump of claim 2 or 3, it is characterized in that, described linkage structure comprises ceramic ball (6) and has the graphite block (7) of spherical groove, place, described rotor (23) axle center has supported hole (233), described graphite block (7) is fixed in supported hole (233), described ceramic ball (6) is fixedly connected with an end of strut (8), and ceramic ball (6) embeds in spherical groove, and the other end of strut (8) is fixedly connected with radome (5) concave surface (51).
5. canned motorpump according to claim 3, is characterized in that, it is conical that described strut (8) is, and the afterbody of strut (8) is enclosed within connecting base (52) above and has the flange (81) leant with spherical concave surface (51).
6. according to claim 1 or 2 or 3 or 5 described canned motorpumps, it is characterized in that, described rotor (23) is hemisphere, has spherical back face (231) and circular end surface (232), and described blade (3) is connected on circular end surface (232).
7. canned motorpump according to claim 6, is characterized in that, offers counterweight hole (234) on described spherical back face (231), is provided with balancing weight (4) in described counterweight hole (234).
8. canned motorpump according to claim 7, is characterized in that, described pump head offers annular seating on (1), is provided with seal ring (9) in described annular seating, and described seal ring (9) leans with radome (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472453.5U CN203384060U (en) | 2013-08-03 | 2013-08-03 | Shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472453.5U CN203384060U (en) | 2013-08-03 | 2013-08-03 | Shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384060U true CN203384060U (en) | 2014-01-08 |
Family
ID=49872561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320472453.5U Expired - Lifetime CN203384060U (en) | 2013-08-03 | 2013-08-03 | Shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203384060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362829A (en) * | 2013-08-03 | 2013-10-23 | 浙江威格泵业有限公司 | Canned motor pump |
| CN109737072A (en) * | 2019-01-14 | 2019-05-10 | 山东双超生物设备科技有限公司 | A kind of high-voltage and ultra-high canned motor pump |
-
2013
- 2013-08-03 CN CN201320472453.5U patent/CN203384060U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362829A (en) * | 2013-08-03 | 2013-10-23 | 浙江威格泵业有限公司 | Canned motor pump |
| CN109737072A (en) * | 2019-01-14 | 2019-05-10 | 山东双超生物设备科技有限公司 | A kind of high-voltage and ultra-high canned motor pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101244296B (en) | Magnetic and fluid velocity pressure mix suspending mechanical heart blood pump | |
| CN201230980Y (en) | Magnetic force and fluid dynamic-pressure mixed suspended artificial heart blood pump | |
| CN207813960U (en) | A kind of vertical multi-stage centrifugal pump | |
| WO2020259641A1 (en) | Magnetic liquid suspension blood pump | |
| CN203384060U (en) | Shield pump | |
| CN103362829A (en) | Canned motor pump | |
| CN113404701B (en) | Shielding pump | |
| CN206144804U (en) | Water pump structure that direct current is brushless | |
| CN203257693U (en) | Pipeline canned motor pump | |
| CN100365288C (en) | Back vane structure for centrifugal pump | |
| CN103256230B (en) | A kind of motor magnetic pump | |
| CN207960974U (en) | It is pumped in a kind of mute high-velocity tube and complete supercharging device | |
| CN207021812U (en) | A kind of canned motor pump | |
| CN207813944U (en) | A kind of vertical multi-stage centrifugal pump | |
| CN106168221A (en) | A kind of duct type single-stage double-suction centrifugal pump | |
| CN208510948U (en) | Wash domain pivot structure | |
| CN108678921A (en) | A kind of high-pressure plunger type hydraulic pump | |
| CN206129616U (en) | Vertical multistage pump | |
| CN205036596U (en) | Novel immersible pump | |
| CN209586710U (en) | A kind of immersible pump | |
| CN207297397U (en) | A kind of immersible pump with axial force bearing capacity | |
| CN202914323U (en) | Vortex electric pump | |
| CN208442088U (en) | A kind of double entry pump | |
| CN205937136U (en) | Pipeline formula single -stage double suction centrifugal pump | |
| CN206234043U (en) | Water turbine and Microfilter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |