CN1824953A - Submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure - Google Patents
Submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure Download PDFInfo
- Publication number
- CN1824953A CN1824953A CN 200510045942 CN200510045942A CN1824953A CN 1824953 A CN1824953 A CN 1824953A CN 200510045942 CN200510045942 CN 200510045942 CN 200510045942 A CN200510045942 A CN 200510045942A CN 1824953 A CN1824953 A CN 1824953A
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- motor
- cavity body
- submersible pump
- electric machine
- machine chamber
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Abstract
There is disclosed a motor indoor and outdoor pressure automatic regulating submersible pump, in which a cavity body with the opening in communication with the external atmosphere is disposed in the closed casing of the motor. In the cavity body is disposed a diaphragm between the closed cavity and the opening and at the bottom of the cavity body are set a hole capable of removing the sewage and a cover plate corresponding to the hole.
Description
Technical field: the present invention relates to a kind of submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure.Be mainly used in pump up water liquid in the water.
Background technique:
In the prior art at present, modal submersible pump mainly contains three kinds, and they have pump, motor, pump and motor shaft to be connected, and the housing of pump and motor fuses, and electric machine casing is an enclosing housing.First kind is the three-phase oil immersion submersible pump, and it is qualified that seal ring and friction block ability are lived two barometric pressure.Do not starting shooting in the water process down during use, when submersible pump submerged gradually, pressure increases gradually, surpasses 10 meters and just surpasses two barometric pressure, and seal ring is because of keeping out incessantly pressure, and water infiltration motor causes burn-down of electric motor or blast.When drawing water in water, external pressure only is that 1 barometric pressure is more before the start, and the heating of start rear motor, inner expansion internal pressure is far longer than external pressure, and when the external and internal pressure difference acquired a certain degree, inner oil was to exosmosing.Shut down back inside temperature reduction pressure and reduce, external pressure is defeated greater than inside.Through repeatedly circulation, inner oil mass reduces gradually, and water infiltrates motor gradually, causes burn-down of electric motor.Second kind is the dry diving pump; the air of dry diving pump inside is dark gradually during to tens of meters after along with water under the submersible pump; the submersible pump inside temperature reduces; the volume-diminished of air in the pump; and hydraulic pressure increases gradually, and the external and internal pressure difference is bigger, and gas expands in the start rear motor heating submersible pump; shut down the back volume-diminished, Sealing and the impaired last water of friction block enter burn-down of electric motor through circulating for several times.The third is unidirectional water logging water pump, inside and outside the no pressure reduction of this submersible pump, but bearing in water and in the mud running life lack, only be 100-150 hour.Need often change axle and take advantage of, the influence of wasting time and energy is produced.
Summary of the invention:
The objective of the invention is to solve the technical problem that is easy to generate very big pressure reduction inside and outside the sealed electric-motor of submersible pump and destroys sealing, the deficiency at existing submersible pump provides a kind of submersible pump that can regulate motor for submerged pump indoor and outdoor pressure automatically.
In order to achieve the above object, technological scheme proposed by the invention is: a kind of submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure, comprise pump, motor, the axle of pump and motor is connected, and the housing of pump and motor is connected as a single entity, the housing of motor has the cavity body that is communicated with motor cavity, and cavity body is provided with the perforate that communicates with ambient atmosphere; In cavity body, have the barrier film that separates is sealed in perforate and motor cavity.Preferably have vent at the prior motor enclosing housing, be covered with a cavity body at the housing that has vent, cavity body is provided with the perforate identical with ambient atmosphere; In cavity body, be provided with the sealing barrier film between vent and the perforate.But hole and one and the corresponding cover plate in this hole of a blowdown thing can also be set in the cavity body bottom.
The present invention is owing to be provided with vent on the electric machine casing of sealing, when submersible pump internal pressure during greater than external pressure, internal pressure can be by vent and sealing barrier film and the outside pressure release of perforate.When external pressure during greater than internal pressure, can be by perforate and sealing barrier film and vent pressure release in housing.Therefore it is almost nil to reach the external and internal pressure difference.Sealing no longer bears excessive pressure and damages, and has guaranteed the sealability of motor, has improved the working life of submersible pump greatly.
Description of drawings: accompanying drawing is the structural representation of a kind of oil immersion motor of the present invention submersible pump broken section.Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment:
The motor room external and internal pressure of invention shown in the accompanying drawing is regulated oil immersion motor submersible pump automatically, and the motor that is connected as a single entity by pump 9, with pump is formed.The axle of pump is connected with motor shaft 10.The housing 1 of motor is an enclosing housing.In the enclosing housing end, be drilled with a vertical vent 2 under mutually, the vent 2 in the enclosing housing end is covered with a cavity body 3, and the cross section of this cavity body 3 is a cylindrical shape, has constituted the cavity body that is communicated with motor cavity.Cavity body 3 and housing 1 are for being connected intermediate cryptographic seal 4.Being drilled with a horizontal opening 5 in the side of cavity body 3 communicates with atmosphere.Having between housing 1 and the cavity body 3 one can be according to the plastic diaphragms 6 that is subjected to force direction distortion, be tightly connected between plastic diaphragms 6 and housing 1 and the cavity body 3, be drilled with vertically downward a pollutant exhaust hole 7 in the cavity body lower end, have in the lower end of pollutant exhaust hole 7 one with the corresponding cover plate 8 of this pollutant exhaust hole size, also available bolt is connected between cover plate 8 and the cavity body.
Certainly the sectional shape of this cavity body also can be semicircle, semiellipse or other shape.The opening of cavity body is not limited to the side, can also be in the bottom.Be not limited to bolt between cover plate and the sewage draining exit and be connected, can also adopt that cassette connects, movable connection method.
Claims (5)
1. submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure, comprise pump (9), motor, the axle (10) of pump (9) and motor is connected and housing is connected as a single entity, it is characterized in that: the housing of motor has the cavity body (3) that is communicated with motor cavity, and cavity body is provided with the perforate (5) that communicates with ambient atmosphere; In cavity body, have the barrier film (6) that separates is sealed in perforate and motor cavity.
2. submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure according to claim 1, it is characterized in that: motor enclosing housing (1) has vent (2), be covered with a cavity body (3) at the housing that has vent (2), cavity body (3) is provided with the perforate identical with ambient atmosphere (5), is provided with sealing barrier film (6) in cavity body (3) between vent (2) and the perforate.
3. submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure according to claim 1 is characterized in that: have vent (2) in motor enclosing housing (1) lower end, in motor enclosing housing (1) lower end outer cover cavity body (3).
4. submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure according to claim 2 is characterized in that: cavity body (3) end face has an opening (5) identical with atmosphere.
5. according to claim 1 or 2 or 3 described submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure, it is characterized in that: there are hole (7) and one and the corresponding cover plate in this hole (8) that can discharge dirt in cavity body (3) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510045942 CN1824953A (en) | 2005-02-23 | 2005-02-23 | Submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510045942 CN1824953A (en) | 2005-02-23 | 2005-02-23 | Submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1824953A true CN1824953A (en) | 2006-08-30 |
Family
ID=36935755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510045942 Pending CN1824953A (en) | 2005-02-23 | 2005-02-23 | Submersible pump capable of automatically regulating electric machine chamber indoor and outdoor pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1824953A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296827A (en) * | 2013-06-04 | 2013-09-11 | 周林 | Submersible liquid delivery pump with inside-cavity pressure of motor automatically adjustable |
| CN113315293A (en) * | 2021-06-01 | 2021-08-27 | 深圳市恒然电机有限公司 | Automatic adjust internal pressure formula brushless motor for work under water |
-
2005
- 2005-02-23 CN CN 200510045942 patent/CN1824953A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296827A (en) * | 2013-06-04 | 2013-09-11 | 周林 | Submersible liquid delivery pump with inside-cavity pressure of motor automatically adjustable |
| CN113315293A (en) * | 2021-06-01 | 2021-08-27 | 深圳市恒然电机有限公司 | Automatic adjust internal pressure formula brushless motor for work under water |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |