CN111852894A - Canned magnetic pump with rear cover shield leakage-proof reinforcement - Google Patents
Canned magnetic pump with rear cover shield leakage-proof reinforcement Download PDFInfo
- Publication number
- CN111852894A CN111852894A CN202010841721.0A CN202010841721A CN111852894A CN 111852894 A CN111852894 A CN 111852894A CN 202010841721 A CN202010841721 A CN 202010841721A CN 111852894 A CN111852894 A CN 111852894A
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- China
- Prior art keywords
- ring section
- inner ring
- base
- leakage prevention
- outer ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A canned magnetic pump with a rear cover shield for leakage prevention and reinforcement comprises a base, a motor unit, a rear cover shield, an impeller, a front cover, a first leakage prevention assembly and a second leakage prevention assembly. The first side surface of the base is in a step shape and is provided with an inner ring section, an outer ring section and a first shoulder, the motor unit shell is provided with a flange opposite to the inner ring section, the rear cover shield is provided with an extending disc part clamped between the flange and the inner ring section in an airtight mode, the inner end surface of the front cover is provided with an inner ring section, an outer ring section and a second shoulder, the extending disc part and the flange are clamped between the inner ring section and the inner ring section in an airtight mode, the first leakage-proof assembly is installed between the inner ring section and the extending disc part, the second leakage-proof assembly is installed between the outer ring section and the outer ring section, and the purpose of double leakage prevention can be achieved through integral configuration.
Description
Technical Field
The invention relates to a canned magnetic pump, in particular to a canned magnetic pump with a rear cover shield for leakage prevention and reinforcement.
Background
A conventional magnetic drive pump (taiwan certificate number I424661) includes a front cover, a supporting frame, an impeller, a rear cover, an inner rotor, an outer rotor, a fixed shaft, and a bracket, wherein the rear cover is cup-shaped and has a two-layer shell structure, and has a rear cover liner made of fluoroplastic, and a reinforcing layer.
Although the magnetic driving pump uses the rear cover lining and the strengthening layer to form a two-layer shell structure, because there is no leakage-proof design between the end edge of the strengthening layer and the rear cover lining, when the rear cover lining is cracked, the leaked chemical liquid can flow along the gap between the rear cover lining and the strengthening layer, and can leak to the outer rotor from the abutting part of the end edge of the strengthening layer and the rear cover lining, and the leaked chemical liquid can corrode the outer rotor, resulting in damage to the motor.
Disclosure of Invention
The invention aims to provide a canned magnetic pump with a rear cover shield for enhancing leakage prevention and leakage prevention effect.
The invention relates to a canned magnetic pump with a rear cover shield and enhanced leakage prevention, which comprises a base, a motor unit, a rear cover shield, an impeller, a front cover, a first leakage prevention assembly and a second leakage prevention assembly, wherein the base comprises a main disc part which surrounds an axis and is in a hollow annular shape, and a side cover part connected to the main disc part, the main disc part is provided with a first side surface, a second side surface which is opposite to the first side surface along the axis, and an inner circumferential surface which is connected between the first side surface and the second side surface in an intersecting manner and can define an inner hole, the first side surface is in a step shape and is provided with an inner ring section which intersects with the inner circumferential surface, an outer ring section which surrounds the outer part of the inner ring section, and a first shoulder which is connected between the inner ring section and the outer ring section in an intersecting manner, the inner ring section protrudes outwards relative to the outer ring section, the motor unit is arranged in, the impeller is driven by the motor unit and is opposite to the first side face, the front cover is positioned on the first side face of the main disc piece, covers the outside of the impeller and is provided with an inner end face opposite to the first side face, the inner end face is in a step shape and is provided with an inner ring section opposite to the inner ring section, and the front cover is positioned on the first side face of the main disc piece and covers the outside of the impeller and is provided with an inner end face opposite to the first side face, The outer ring section surrounds the outer portion of the inner ring section and is opposite to the outer ring section, and the second shoulder portion is connected between the inner ring section and the outer ring section in an intersecting mode and is opposite to the first shoulder portion.
According to the canned magnetic pump with the rear cover shield and the leakage-proof reinforcement, the main disc piece of the base is further provided with a first ring groove which is arranged on the inner ring section and is in a continuous ring shape around the axis, and the first leakage-proof assembly is nested in the first ring groove.
In the canned magnetic pump with the rear cover shield and the leakage prevention strengthening, the first annular groove of the main disc part of the base is adjacent to the inner circumferential surface.
According to the canned magnetic pump with the rear cover shield and the leakage-proof reinforcement, the main disc piece of the base is further provided with a second ring groove which is arranged on the outer ring section and is in a continuous ring shape around the axis, and the second leakage-proof assembly is nested in the second ring groove.
The canned magnetic pump with the rear cover shield and the leakage prevention strengthening function has the advantages that the second annular groove of the main disc piece of the base is adjacent to the first shoulder.
The canned magnetic pump with the rear cover shield and the leakage-proof reinforcement is characterized in that the front cover is also provided with a third ring groove which is arranged on the inner ring section and is in a continuous ring shape around the axis, the canned magnetic pump also comprises a third leakage-proof component which is nested in the third ring groove, and the third leakage-proof component enables the flange to be tightly attached to the inner ring section.
In the canned magnetic pump with the rear cover shield and the leakage prevention reinforcement, the third annular groove of the front cover is adjacent to the second shoulder.
The canned magnetic pump with the rear cover shield and the leakage-proof strengthening structure has the advantages that the flange periphery of the shell of the motor unit and the periphery of the extension disc part of the rear cover shield are abutted against the second shoulder part.
The invention has the beneficial effects that: utilize first leak protection subassembly install in the inner race section with extend the effect between the dish portion, even when the casing of motor unit produces when splitting and damaging, the chemical liquid medicine of seepage can not follow back lid guard shield with gap between the casing extends to the stator, and can ensure the life of motor unit, recycles second leak protection subassembly install in the outer race section with the effect between the outer race section can prevent that the chemical liquid medicine from outwards oozing.
Drawings
FIG. 1 is an exploded perspective view of one embodiment of the canned magnetic pump with back cover shield leak protection enhancement of the present invention;
FIG. 2 is a combined sectional view of the embodiment; and
fig. 3 is a partially enlarged schematic view of fig. 2.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, an embodiment of the canned magnetic pump with back cover shield leakage prevention enhancement of the present invention includes a base 10, a positioning seat 20, a motor unit 30, a back cover shield 40, an impeller 50, a front cover 60, a first leakage prevention member 71, a second leakage prevention member 72, and a third leakage prevention member 73.
The base 10 is made of plastic (in this embodiment, engineering plastic with acid and alkali resistance may be selected to be made of, for example, PP, GFRPP, PVDF, CFRETFE, etc.), and has a main disc 11 surrounding an axis L and defining a hollow ring shape, and a side cover 12 connected to the main disc 11 along the axis L, where the main disc 11 has a first side 111, a second side 112 opposite to the first side 111 along the axis L, and an inner peripheral surface 114 intersected and connected between the first side 111 and the second side 112 and defining an inner hole 113, and the inner peripheral surface 114 has an arc guiding angle 110 engaged and connected to the first side 111. The first side surface 111 is stepped and has an inner ring segment 115 connected to the arc lead angle 110, an outer ring segment 116 surrounding the inner ring segment 115, a first shoulder 117 intersecting and connected between the inner ring segment 115 and the outer ring segment 116, a first ring groove 118 disposed on the inner ring segment 115 and forming a continuous ring shape around the axis L, and a second ring groove 119 disposed on the outer ring segment 116 and forming a continuous ring shape around the axis L. The first annular groove 118 is adjacent to the rounded chamfer 110. The inner ring segment 115 projects towards the outside relative to the outer ring segment 116. The second annular groove 119 is adjacent to the first shoulder 117. The side cover member 12 is attached to the second side 112.
The positioning seat 20 is made of metal material and is made into a hollow cylinder shape, and is nested inside the side cover 12 of the base 10 and abuts against the second side surface 112. In other embodiments, the positioning seat 20 can be omitted.
The motor unit 30 is installed inside the base 10 and the positioning base 20. The motor unit 30 of the embodiment adopts a canned motor, and includes a housing 31, a stator 32 sleeved between the housing 31 and the positioning seat 20 and the base 10, and a rotor 33 installed inside the housing 31, where the housing 31 has a main cylinder 311 installed in a hollow cylinder for the rotor 33, and a flange 312 connected to the main cylinder 311 in an intersecting manner, and the flange 312 is opposite to the inner ring segment 115.
The back cover shield 40 is installed inside the base 10 and has a main body 41 sleeved between the main cylindrical portion 311 and the stator 32 and an extension disc portion 42 intersecting with the main body 41, wherein the extension disc portion 42 is air-tightly clamped between the flange 312 and the inner ring segment 115.
The impeller 50 is driven by the motor unit 30 and is opposite to the first side 111.
The front cover 60 is positioned on the first side surface 111 of the main disk 11 and covers the outside of the impeller 50, and has an inner end surface 61 opposite to the first side surface 111, the inner end surface 61 is stepped, and has an inner ring section 611 opposite to the inner ring section 115, an outer ring section 612 surrounding the outside of the inner ring section 611 and opposite to the outer ring section 116, a second shoulder 613 intersecting between the inner ring section 611 and the outer ring section 612 and opposite to the first shoulder 117, and a third ring groove 614 disposed on the inner ring section 611 and continuous ring shape around the axis L. The inner ring segment 611 is recessed inwardly with respect to the outer ring segment 612, the third ring groove 614 is adjacent to the second shoulder 613, the extension disc portion 42 and the flange 312 are hermetically clamped between the inner ring segment 115 and the inner ring segment 611, and the periphery of the flange 312 and the extension disc portion 42 abut against the second shoulder 613.
The first leakage prevention member 71 is mounted between the inner ring section 115 and the extension disc portion 42, and in this embodiment, the first leakage prevention member 71 is nested in the first ring groove 118.
The second leakage prevention assembly 72 is mounted between the outer ring section 116 and the outer ring section 612. In this embodiment, the second anti-leakage assembly 72 is nested in the second ring groove 119.
The third anti-leakage element 73 is nested in the third ring groove 614.
For a further understanding of the invention, its role, the technical means employed, and the efficacy attained by its cooperation, it is believed that the invention will be more fully and specifically understood from the following description.
As shown in fig. 2 and 3, when the canned magnetic pump with enhanced back cover and shield leakage prevention is assembled, the front cover 60 is fastened to the main disc 11 of the base 10 by using a plurality of screws, so that the stepped first side surface 111 and the inner end surface 61 are nested in a concave-convex manner, that is, the extension disc 42 and the flange 312 are clamped between the inner ring section 115 and the inner ring section 611 in a gas-tight manner, and the flange 312 and the extension disc 42 abut against the second shoulder 613, so that the extension disc 42 and the flange 312 can be positioned and sealed well.
Again, the first leakage-proof component 71 is installed between the inner ring section 115 and the extension disc portion 42, and the first leakage-proof component 71 is nested in the first ring groove 118, even when the canned magnetic pump is used for a period of time, the main cylinder 311 of the housing 31, which is often in contact with the chemical liquid, is cracked, and the chemical liquid leaks between the housing 31 and the rear cover shield 40, the first leakage-proof can be generated by preventing the chemical liquid from leaking to the stator 32 by the arrangement of the first leakage-proof component 71. And the second leakage-proof assembly 72 is also installed between the outer ring section 612 and the outer ring section 116, so that the inner end surface 61 and the first side surface 111 are kept air (water) tight, thereby creating a second leakage-proof effect.
Furthermore, since the flange 312 of the housing 31 and the extending disk 42 of the rear cover shield 40 are clamped between the front cover 60 and the first side surface 111, the flange 312 of the housing 31 of the motor unit 30 and the extending disk 42 of the rear cover shield 40 are positioned with respect to the base 10 and the positioning seat 20, and are clamped between the flange 312 and the inner ring section 611 by the third leakage prevention component 73, so as to ensure air (water) tightness at the joint of the front cover 60, the flange 312 and the base 10 and to generate a better leakage prevention effect.
By the step-shaped first side surface 111 and the inner end surface 61 being nested in a concave-convex manner, the inner ring segment 115 being protruded outward relative to the outer ring segment 116, the inner ring segment 611 being recessed inward relative to the outer ring segment 612, and the arrangement of the first leakage prevention assembly 71, the second leakage prevention assembly 72, and the third leakage prevention assembly 73, the leaked chemical liquid can be effectively prevented from flowing into the stator 32 along the gap between the rear cover shield 40 and the housing 31, and therefore, the service life of the motor unit 30 can be prolonged.
Furthermore, the stepped first side surface 111 and the inner end surface 61 are concave-convex nested, so that a multi-turn structure can be generated, and a better leakage-blocking effect can be generated at the abutting part of the flange 312 and the extension disc part 42.
In summary, the canned magnetic pump with the reinforced leakage-proof rear cover shield has the advantages of simple overall structure, easy manufacture and assembly, better leakage-proof effect and capability of really achieving the purpose of the invention.
Claims (8)
1. The utility model provides a canned magnetic drive pump that lid guard shield leak protection is reinforceed behind utensil, contains base, motor unit, back lid guard shield, impeller, protecgulum, first leak protection subassembly and second leak protection subassembly, its characterized in that:
the base comprises a main disc part which surrounds an axis and is in a hollow annular shape, and a side cover part which is connected to the main disc part, wherein the main disc part is provided with a first side surface, a second side surface which is opposite to the first side surface along the axis, and an inner circumferential surface which is connected between the first side surface and the second side surface in an intersecting manner and can define an inner hole, the first side surface is in a step shape and is provided with an inner ring section which is intersected with the inner circumferential surface, an outer ring section which surrounds the outer part of the inner ring section, and a first shoulder part which is connected between the inner ring section and the outer ring section in an intersecting manner, and the inner ring section protrudes outwards relative to the outer ring section;
the motor unit is arranged in the base and comprises a shell, a stator sleeved between the shell and the base and a rotor arranged in the shell, the shell is provided with a main cylindrical part which is used for mounting the rotor and is in a hollow cylindrical shape, and flanges which are connected with the main cylindrical part in an intersecting manner, and the flanges are opposite to the inner ring section;
the rear cover shield is arranged in the base and is provided with a main body part sleeved between the main cylinder part and the stator and an extension disc part intersected and connected with the main body part, and the extension disc part is clamped between the flange and the inner ring section in an airtight manner;
the impeller is driven by the motor unit and is opposite to the first side surface;
the front cover is positioned on a first side face of the main disc part, covers the outside of the impeller and is provided with an inner end face relative to the first side face, the inner end face is in a stepped shape and is provided with an inner ring section relative to the inner ring section, an outer ring section surrounding the outside of the inner ring section and relative to the outer ring section, and a second shoulder portion which is connected between the inner ring section and the outer ring section in an intersecting manner and is relative to the first shoulder portion, the inner ring section is recessed towards the inside relative to the outer ring section, and the extension disc part and the flange are clamped between the inner ring section and the inner ring section in an airtight manner;
the first leakage-proof assembly is arranged between the inner ring section and the extension disc part;
the second leakage-proof assembly is installed between the outer ring section and the outer ring section.
2. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 1, characterized in that: the main disc of base still have set up in the inner circle section just centers on the axis is the first annular of continuous ring form, first leak protection subassembly nestification in the first annular.
3. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 2, characterized in that: the first annular groove of the main disc member of the base is adjacent to the inner circumferential surface.
4. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 1, characterized in that: the main disc of base still have set up in the outer lane section and around the axis is the second annular of continuous ring form, second leak protection subassembly nestification in the second annular.
5. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 4, characterized in that: the second annular groove of the main disc of the base is adjacent to the first shoulder.
6. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 1, characterized in that: the protecgulum still have set up in the inner ring section just centers on the axis is the third annular of continuous ring form, canned magnetic drive pump still contain nested in third hourglass subassembly in the third annular, the third hourglass subassembly makes the airtight subsides of flange support in the inner ring section.
7. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 6, characterized in that: the third ring groove of the front cover is adjacent to the second shoulder.
8. The canned magnetic pump with back cover shield leakage prevention reinforcement of claim 1, characterized in that: the flange periphery of the housing of the motor unit, and the extension disc periphery of the rear cover shield abut against the second shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841721.0A CN111852894A (en) | 2020-08-20 | 2020-08-20 | Canned magnetic pump with rear cover shield leakage-proof reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010841721.0A CN111852894A (en) | 2020-08-20 | 2020-08-20 | Canned magnetic pump with rear cover shield leakage-proof reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852894A true CN111852894A (en) | 2020-10-30 |
Family
ID=72969476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010841721.0A Pending CN111852894A (en) | 2020-08-20 | 2020-08-20 | Canned magnetic pump with rear cover shield leakage-proof reinforcement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852894A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927015A (en) * | 2012-11-05 | 2013-02-13 | 安徽松久电机电器有限公司 | Cooling shield electric pump for converter |
| CN205225765U (en) * | 2015-12-29 | 2016-05-11 | 允博（天津）电机科技发展有限公司 | Novel shield pump |
| CN109424552A (en) * | 2017-08-23 | 2019-03-05 | 杭州三花研究院有限公司 | Electrodynamic pump |
| TWM598892U (en) * | 2020-03-26 | 2020-07-21 | 日益電機股份有限公司 | Canned magnetic pump with screw-lockable front and rear covers |
| CN212429214U (en) * | 2020-08-20 | 2021-01-29 | 日益电机股份有限公司 | Canned magnetic pump with rear cover shield leakage-proof reinforcement |
-
2020
- 2020-08-20 CN CN202010841721.0A patent/CN111852894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927015A (en) * | 2012-11-05 | 2013-02-13 | 安徽松久电机电器有限公司 | Cooling shield electric pump for converter |
| CN205225765U (en) * | 2015-12-29 | 2016-05-11 | 允博（天津）电机科技发展有限公司 | Novel shield pump |
| CN109424552A (en) * | 2017-08-23 | 2019-03-05 | 杭州三花研究院有限公司 | Electrodynamic pump |
| TWM598892U (en) * | 2020-03-26 | 2020-07-21 | 日益電機股份有限公司 | Canned magnetic pump with screw-lockable front and rear covers |
| CN212429214U (en) * | 2020-08-20 | 2021-01-29 | 日益电机股份有限公司 | Canned magnetic pump with rear cover shield leakage-proof reinforcement |
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