CN102410241A - Isolating casing for magnetic pumps - Google Patents
Isolating casing for magnetic pumps Download PDFInfo
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- CN102410241A CN102410241A CN2010102906012A CN201010290601A CN102410241A CN 102410241 A CN102410241 A CN 102410241A CN 2010102906012 A CN2010102906012 A CN 2010102906012A CN 201010290601 A CN201010290601 A CN 201010290601A CN 102410241 A CN102410241 A CN 102410241A
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- separation sleeve
- magnetic drive
- drive pump
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Abstract
The invention relates to an isolating casing for magnetic pumps, which comprises a body and fixed connectors arranged on the body, the body comprises a bottom part and a cylindrical part, the bottom part is tightly fixed on the bottom of the cylindrical part, and the body is of a structure with two or more layers, and comprises an outer layer and an inner layer made of corrosion-resistant material. The outer layer made of high temperature-resistant, high-strength non-metallic material can provide the isolating casing with high pressure-resistant capability, the inner layer made of the high temperature-resistant, corrosion-resistant material can provide the isolating casing with high corrosion-resistant capability, and consequently, the structure with the corrosion-resistant inner layer and the pressure-resistant outer layer ensures that while the isolating casing has good high temperature-resistant capability, high strength and high corrosion-resistant capability can be integrated together; and since each layer of the isolating casing is made of the non-metallic material, the isolating casing also avoids the problem that the overall efficiency is decreased by the eddy loss of metallic material.
Description
Technical field
The present invention relates to a kind of magnetic drive pump, especially relate to a kind of magnetic drive pump separation sleeve.
Background technique
Magnetic drive pump is widely used in industries such as chemical industry, oil, printing and dyeing, medicine, food, plating; In order to liquid such as transfer oil and chemical mediators; The various characteristics of comprehensive these media just requires magnetic drive pump corrosion-resistant, high temperature resistant, high pressure resistant, and the sealing of zero leakage is arranged.The inside and outside magnetic shaft coupling of existing magnetic drive pump; Separation sleeve is set therebetween carries out physical segregation; Publication like " magnetic drive pump " (publication number CN 10l149060A) by name; It is exactly the separation structure (magnet rotor and outer magnet rotor in this article is described, inside and outside magnetic shaft coupling promptly as herein described) of this separation sleeve; For the magnetic drive pump separation sleeve; Mostly be at present the structure that discloses like aforementioned patent, the i.e. cylinder of open top, bottom lock, the separation sleeve of this structure; More employing metallic material is made, and also has some low power magnetic drive pump separation sleeves to adopt nonmetallic material; But no matter adopt which kind of material, these separation sleeves all adopt single layer structure, and promptly the separation sleeve main body adopts same material to be made.
Existing technology is in practical application, and the metal separation sleeve is high temperature resistant, high-voltage resistance capability is stronger, but corrosion resistance a little less than; And can produce eddy current, eddy current makes the separation sleeve heating, if the untimely heat of high temperature of taking away the eddy current generation; Can cause inside and outside magnetic shaft coupling demagnetization,, in time take away the eddy current heat of separation sleeve even designed good cooling circuit; Owing to consume eddy current loss, also can reduce the overall efficiency 10% of pump at least at separation sleeve; For the nonmetallic material separation sleeve, pottery, PEEK, PVDF or other fluoroplastic of adopting more, stupalith belongs to brittle material; Have high temperature resistant preferably, high pressure resistant, corrosion resistance, but very easily broken in installation process, or the pressure surge when work also will be shaken brokenly; The PEEK resin is also very crisp after strengthening, and can break as pottery equally, and also receive the restriction of a lot of media on the decay resistance; Fluoroplastic are anti-to possess corrosion ability preferably; But because intensity is on the low side, has only under the normal temperature operating mode and can use on some small-power magnetic drive pumps, just be difficult to be competent at having under temperature and the high-power situation.
Therefore, for existing separation sleeve structure, no matter be to adopt metal material or non-metallic material, all there are various deficiencies, be difficult to have both simultaneously higher overall efficiency, corrosion resistance, heat-resisting ability and high-voltage resistance capability.
Summary of the invention
Main purpose of the present invention provides a kind of magnetic drive pump separation sleeve, and it adopts multi-layer compound structure; Compared to existing single layer structure, has stronger corrosion-resistant, high pressure resistant and heat-resisting ability.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: a kind of magnetic drive pump separation sleeve; Comprise the body that constitutes by bottom and tube portion; And be located at the fixed connection apparatus on the body; Said bottom seals is fixed on the bottom of a portion, and said body is that body is two-layer or two-layer above structure, and it comprises skin and the internal layer of being made by resistant material.Tube portion is sheathed between the inside and outside magnetic shaft coupling, again through the fixed connection apparatus on the body, is sealedly and fixedly connected with the outside formation; The skin that adopts resistant to elevated temperatures high tenacity nonmetallic material to make; Can be separation sleeve voltage endurance capability preferably is provided; Contact with fed sheet of a media, by the internal layer that resistant to elevated temperatures resistant material is made, can be separation sleeve corrosion resistance preferably be provided, therefore; This internal layer corrosion resistant, outer withstand voltage structure; Make separation sleeve when having preferably heat-resisting ability, can the ability of high tenacity and highly corrosion resistant be combined, thereby overcome existing structure or lack voltage endurance capability or lack the deficiency of corrosion resistance; Adopt nonmetallic material to make each layer of separation sleeve, the problem that can avoid the metallic material eddy current loss to bring overall efficiency to reduce.
Internal layer directly contacts with fed sheet of a media, for separation sleeve provides corrosion resistance; Material category with decay resistance preferably is more, and as preferably, the material of said internal layer is PFA or PTFE or PVDF or FEP.Adopt these fluoroplastic materials, internal layer also is easy to make moulding when having good corrosion resistance, and cost is lower, is suitable for making in batches; The internal layer of these fluoroplastic material can also provide the better seal performance in addition, avoids inner fed sheet of a media to leak.
Being mainly separation sleeve provides the skin of voltage endurance capability, though directly do not contact with fed sheet of a media, need have certain corrosion resistance equally; As preferably, said outer field material is a fiber glass epoxy.Fiber glass epoxy has voltage endurance capability preferably, also has resistance to high temperature preferably, also has certain decay resistance; Outer being prone to of fiber glass epoxy made, and cost is low.
Separation sleeve is except self possessing the good sealing property, and it need have good sealing property with outside being connected also; Usually, the opening end end face of distance sleeve portion is tightly connected with outside formation, adopts usual manner that Sealings realizations such as seal ring or sealing gasket are set if this place is tightly connected; In actual use; Will have characteristics such as HTHP and high corrosion because of a lot of fed sheet of a media, be easy to lose efficacy and sealing is connected, thus the working life of grievous injury magnetic drive pump; And be subject to the influence of Environmental Conditions; To the work that this impaired sealing is changed or keeped in repair, operation easier is bigger, very easily causes the manpower and materials waste; Therefore as preferred, said internal layer is for extending to body open end and being covered in the body open end end, and formation can constitute end face or the annular protrusion that is tightly connected with the outside.The internal layer employing has the sealing material of corrosion resistance to be made, and makes internal layer at seal face or annular protrusion that tube portion opening end forms, can be used as Sealing and is tightly connected with outside formation, need not to be provided with separately seal elements such as seal ring or sealing gasket; Seal face or annular protrusion that internal layer forms at tube portion opening end, not only sealing is good, and not fragile, long service life, and has simplified sealing configuration, makes assembling work easier, is suitable for producing in enormous quantities making; Internal layer is an end-face structure the formation of separation sleeve opening end, then constitutes face seal with the outside, if the annular protrusion structure then constitutes linear sealing with the outside; The annular protrusion structure means the annular projection of the sealing that internal layer forms on the separation sleeve end face, as attached to the seal ring on the opening end end face; Annular projection can be a circle, also can two circle or more than two circles, can select according to actual use condition.
In the course of the work, the magnetic drive pump separation sleeve need bear high temperature, the high pressure from fed sheet of a media; As preferably, the overall structure that said skin is formed in one.Integrated overall structure, even structure, the densification of outer each one, the resistance to compression of each one, thermal deformation resistant performance are more approaching, make skin can obtain higher structural strength, improve voltage endurance capability thus.
Be to improve the adhesive strength of internal layer and adjacent layer, as preferably, the processing of the junction plane of said internal layer and adjacent layer employing activating surface.For the internal layer of making such as nonmetallic material such as fluoroplastic, it adopts activating surface to handle, and making has good binding between internal layer and the adjacent layer, more can strengthen the anti-high pressure and the resistance to high temperature of separation sleeve.
Under the high pressure effect, the joint of bottom and tube portion is prone to ftracture because stress concentrates, and as preferably, the joint of said bottom and tube portion is set to arc.In like manner, as preferably, the root of said fixed connection apparatus and the joint of body are provided with fillet.This arc-shaped transition or fillet structure have been avoided the stress concentration phenomenon effectively, have further improved the anti-high pressure and the resistance to high temperature of separation sleeve.
The vibration that magnetic drive pump can produce during operation; As preferably, said fixed connection apparatus is flange or the lug of being located on the separation sleeve body open end circumference; This flange or lug are internal layer, the outer double layer construction that forms that extends.Flange that nonmetallic material are made or the internal layer on the lug are clamped between the skin on outer portion connecting structure and flange or the lug, can play buffer function; The buffering at this place, the vibration of the magnetic drive pump of can decaying prevents that effectively linkage structure from producing malformation because of vibration, and avoids the inefficacy that is tightly connected thus the impact that separation sleeve produces.
Tradition magnetic drive pump separation sleeve adopts flat-bottom structure more, under hot environment, and the influence of temperature distortion, pressure distortion, flat-bottom structure usually is difficult to bear higher working pressure; As preferably, the bottom of said body is at the bottom of arcuate bottom or conical bottom or the butterfly or at the bottom of the toric surface.At the bottom of arcuate bottom or conical bottom or the butterfly or at the bottom of the toric surface, have certain ductility, non-deformability is stronger; In addition, the bottom of these shapes also can avoid bottom and separation sleeve cylindrical shell connecting part stress to concentrate and ftracture, and has improved the non-deformability of connecting part.
In sum, that the present invention has is rational in infrastructure, be easy to characteristics such as making, especially has following beneficial effect:
1, the separation sleeve cylindrical shell has internal layer and outer field structure; The corrosion of being able to bear strong corrosion property of the internal layer medium of making by fluoroplastic, skin can improve structural strength; Compared to traditional single layer structure, the isolation with internal and external layer structure is with more excellent corrosion resisting performance and withstand voltage properties;
2, internal layer and skin are nonmetallic material and make, and be high temperature resistant and have or not the eddy current loss of metal separation sleeve, avoided the reduction of overall efficiency;
3, traditional flat bucket bottom structure is changed in separation sleeve bottom, is designed at the bottom of arcuate bottom or conical bottom or the butterfly or at the bottom of the toric surface, can bears higher operating temperature and working pressure;
4, the end face of separation sleeve opening end is provided with the sealing configuration that is extended to form by internal layer, has both improved sealability, has prolonged working life of sealing configuration, has simplified overall structure again, has made things convenient for installation;
5, as the flange or the lug of fixed connection apparatus, it is installed junction surface and is extended by internal layer and constitute, and this structure provides good buffer capacity, avoids separation sleeve to receive vibratory impulse and causes malformation;
6, skin is the overall structure of integral production, and each bilge construction is even, fine and close, makes the resistance to compression of each one, thermal deformation resistant performance more approaching; Outer bottom is provided with arc-shaped transition with tube portion and is connected, and effectively avoids stress to concentrate, and improves integrally-built voltage endurance capability thus.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of a kind of magnetic drive pump separation sleeve of the present invention;
Accompanying drawing 2 is a kind of structural representations of traditional separation sleeve;
Accompanying drawing 3 is a kind of structural representations that the present invention installs and uses.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technological scheme of the present invention.
Embodiment: a kind of magnetic drive pump separation sleeve of the present invention, shown in accompanying drawing 1, it comprises the body that is made up of bottom 4 and tube portion 5, and is located at the fixed connection apparatus 2 on the body, bottom 4 sealing and fixing are in the bottom of tube portion 5; Body is that body is two-layer or two-layer above structure, and it comprises skin of being made by nonmetallic material 1 and the internal layer of being made by resistant material 3.
Outer 1 material is a fiber glass epoxy; The skin 1 that fiber glass epoxy constitutes has structural strength preferably, and voltage endurance capability is strong, resistance to high temperature is better, also has certain decay resistance.Outer 1 overall structure that is formed in one makes the structure of outer 1 each one more even, fine and close, and even structure makes the resistance to compression of each one, thermal deformation resistant performance more approaching, and compact structure can be obtained excellent sealing performance.
The material of internal layer 3 is PFA or PTFE or PVDF or FEP; The fluoroplastic material has good anti-corrosion and sealing, makes internal layer 1 when having good corrosion resistance, and the better seal performance can also be provided.For improving between internal layer 3 and the adjacent layer good binding intensity is arranged, internal layer 3 adopts activating surface to handle with the junction plane of adjacent layer.
The separation sleeve of conventional construction is shown in accompanying drawing 2, and its bottom mostly 4 is a flat-bottom structure; Polycrystalline substance of the present invention is shown in accompanying drawing 1, and its bottom 4 is at the bottom of arcuate bottom or conical bottom or the butterfly or at the bottom of the toric surface; Compared to traditional flat-bottom structure, polycrystalline substance of the present invention makes separation sleeve can bear higher thermal distortion, pressure distortion, also can bear higher temperature, higher pressure.
Shown in accompanying drawing 1, bottom 4 is set to arc with the joint of tube portion 5, and the arc-shaped transition connection effectively stress of avoiding of joint is concentrated, and improves integrally-built voltage endurance capability thus.
Fixed connection apparatus 2 is for being located at flange or the lug on the separation sleeve body open end circumference, and this flange or lug are that internal layer 3, outer 1 extends the double layer construction that forms.The root of fixed connection apparatus 2 and the joint of body are provided with fillet.
Separation sleeve of the present invention is installed and used state shown in accompanying drawing 3, and separation sleeve 8 is located between interior magnetic shaft coupling 6, the outer magnetic shaft coupling 7.
Because the needs of some big flow, high-voltage applications, the magnetic drive pump size of some specification is bigger; Therefore, for skin 1, skeleton can be set on it with further reinforced structure intensity; Obviously, this structure still belongs to protection scope of the present invention.
Need to prove; Know-why of the present invention is that corrosion resistant internal layer 1 and withstand voltage skin are set; So that separation sleeve possesses the compressive strength of higher decay resistance and Geng Gao, still, separation sleeve is not limited to the double layer construction that internal and external layer constitutes; Between internal and external layer, the mesosphere can also be set, the effect in this mesosphere can be the join strength between enhancing structural strength, enhancement layer and the layer etc.; In the practical application, be the double layer construction that adopts internal and external layer to constitute, still adopt the multi-layer structure that is provided with the mesosphere, visual actual use condition is selected.
Claims (10)
1. magnetic drive pump separation sleeve; Comprise the body that constitutes by bottom (4) and tube portion (5); And be located at the fixed connection apparatus (2) on the body; Said bottom (4) sealing and fixing is characterized in that in the bottom of tube portion (5): said body is two-layer or two-layer above structure, and it comprises skin (1) and the internal layer of being made by resistant material (3).
2. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: the material of said internal layer (3) is PFA or PTFE or PVDF or FEP.
3. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: the material of said skin (1) is a fiber glass epoxy.
4. according to claim 1 or 2 or 3 described a kind of magnetic drive pump separation sleeves, it is characterized in that: said internal layer (3) is to the body open end extension and be covered in body open end, and formation can constitute end face or the annular protrusion that is tightly connected with the outside.
5. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: the overall structure that said skin (1) is formed in one.
6. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: said internal layer (3) adopts activating surface to handle with the junction plane of adjacent layer.
7. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: said bottom (4) are set to arc with the joint of tube portion (5).
8. a kind of magnetic drive pump separation sleeve according to claim 1 is characterized in that: the root of said fixed connection apparatus (2) and the joint of body are provided with fillet.
9. according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8 described a kind of magnetic drive pump separation sleeves, it is characterized in that: said bottom (4) are at the bottom of arcuate bottom or conical bottom or the butterfly or at the bottom of the toric surface.
10. according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8 described a kind of magnetic drive pump separation sleeves, it is characterized in that: said fixed connection apparatus (2) is for being located at flange or the lug on the separation sleeve body open end circumference; This flange or lug are that the double layer construction that forms is extended in internal layer (3), outer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102906012A CN102410241A (en) | 2010-09-25 | 2010-09-25 | Isolating casing for magnetic pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102906012A CN102410241A (en) | 2010-09-25 | 2010-09-25 | Isolating casing for magnetic pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410241A true CN102410241A (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102906012A Pending CN102410241A (en) | 2010-09-25 | 2010-09-25 | Isolating casing for magnetic pumps |
Country Status (1)
| Country | Link |
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| CN (1) | CN102410241A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603808A (en) * | 2013-11-25 | 2014-02-26 | 丹东克隆先锋泵业有限公司 | Magnetic drive submerged pump |
| CN108869276A (en) * | 2018-08-17 | 2018-11-23 | 江苏新腾宇流体设备制造有限公司 | A kind of more jacket heat-preservation magnetic transmission gear pumps |
| CN110115532A (en) * | 2018-02-06 | 2019-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Stir cup assembly and food cooking machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201013641Y (en) * | 2006-10-20 | 2008-01-30 | 蔡国华 | Magnetic force centrifugal pump separation sleeve |
| CN201258869Y (en) * | 2008-08-08 | 2009-06-17 | 安徽卧龙泵阀有限责任公司 | Magnetic pump with combination type separation sleeve |
| CN201386684Y (en) * | 2009-04-07 | 2010-01-20 | 白银鸿浩化工机械制造有限公司 | Spacer sleeve of magnetic pump |
| CN201818533U (en) * | 2010-09-25 | 2011-05-04 | 太仓顺达磁力泵科技有限公司 | Isolation sleeve of high strength magnetic drive pump |
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2010
- 2010-09-25 CN CN2010102906012A patent/CN102410241A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013641Y (en) * | 2006-10-20 | 2008-01-30 | 蔡国华 | Magnetic force centrifugal pump separation sleeve |
| CN201258869Y (en) * | 2008-08-08 | 2009-06-17 | 安徽卧龙泵阀有限责任公司 | Magnetic pump with combination type separation sleeve |
| CN201386684Y (en) * | 2009-04-07 | 2010-01-20 | 白银鸿浩化工机械制造有限公司 | Spacer sleeve of magnetic pump |
| CN201818533U (en) * | 2010-09-25 | 2011-05-04 | 太仓顺达磁力泵科技有限公司 | Isolation sleeve of high strength magnetic drive pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603808A (en) * | 2013-11-25 | 2014-02-26 | 丹东克隆先锋泵业有限公司 | Magnetic drive submerged pump |
| CN110115532A (en) * | 2018-02-06 | 2019-08-13 | 佛山市顺德区美的电热电器制造有限公司 | Stir cup assembly and food cooking machine |
| CN110115532B (en) * | 2018-02-06 | 2021-09-28 | 佛山市顺德区美的电热电器制造有限公司 | Stirring cup subassembly and food processor |
| CN108869276A (en) * | 2018-08-17 | 2018-11-23 | 江苏新腾宇流体设备制造有限公司 | A kind of more jacket heat-preservation magnetic transmission gear pumps |
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Application publication date: 20120411 |