CN1048828C - Suspended explosion-proof electric motor - Google Patents
Suspended explosion-proof electric motor Download PDFInfo
- Publication number
- CN1048828C CN1048828C CN 90101116 CN90101116A CN1048828C CN 1048828 C CN1048828 C CN 1048828C CN 90101116 CN90101116 CN 90101116 CN 90101116 A CN90101116 A CN 90101116A CN 1048828 C CN1048828 C CN 1048828C
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- Prior art keywords
- electric motor
- explosion
- air chamber
- motor
- proof electric
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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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- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a suspension type anti-explosion electric motor which is composed of an electric motor, a protective cover outside the electric motor, and a fixed plate, wherein inert gas is charged between the protective cover and an outer case of the electric motor, and the pressure of the inner gas is larger than ambient pressure. The electric motor can work by suspending in liquid, or can be arranged on land to work. Moreover, the present invention has the characteristics of anti-explosion and corrosion resistance.
Description
The present invention relates to motor, particularly a kind of flame-proof electric motor that is suspended in the liquid.
Existing " floating motor " is that motor is fixed in the air chamber that is made of bucker and fixed head, and motor reel stretches out air chamber by sealing and drives water pump outward, is that " floating motor " directly drives water pump as Chinese patent 87200927 float electric pumps etc.If pump configuration is simple, easy to use, energy-conservation, be widely used in irrigation and drainage, water supply of general occasion etc.But because the outer pressure of cover inner cover is equal substantially, promptly air chamber is not inflated, and the seal of axle is on-stream seepage unavoidably, and therefore, such floating pump all has the dewatering outlet, and finding has water in the cover, emit get final product, and be complete available for general environment.In a single day being used to have the occasion of requirement of explosion proof just can not use as this pump or " floating motor ", is danger close because have combustibility or corrosive substance to enter.
Task of the present invention is to design a kind of motor mounting in air chamber, to what inflate in the air chamber, can fix use by land during work, also can be suspended in the motor with explosion-proof performance of working in the liquid.
The task of suspended explosion-proof electric motor of the present invention is achieved like this: be made up of institutes such as motor body, fixed head and protective covers, constitute the sealing plenum chamber with fixed head and protective cover, motor body is installed in the plenum chamber.
Suspended explosion-proof electric motor of the present invention is filled with non-flammable gases such as nitrogen or inert gas in the air chamber of fixed head and protective cover formation, motor body is installed in the air chamber that is filled with nitrogen or inert gas.
Suspended explosion-proof electric motor of the present invention, setting pressure indicating device on the protective cover that constitutes air chamber is installed the power supply pressure switch in air chamber, so that know the pressure size in the air chamber, can play again when the interior pressure of air chamber drops to certain value and understand the automatic cut-off motor power supply, to guarantee safety.
Flame-proof electric motor of the present invention can float on a liquid and drag load, also can fixedly mount use.In to place that requirement of explosion proof is arranged or the place of not having requirement of explosion proof, and in outdoor, indoor, the water, landly all be suitable for.And as long as the part that contacts with corrosive medium has Corrosion Protection, the motor that is positioned at air chamber is can not be subjected to the external corrosion medium influence.
Fig. 1 is that suspended explosion-proof electric motor of the present invention drags the pump configuration schematic diagram.
Below in conjunction with Fig. 1 the embodiment of suspended explosion-proof electric motor of the present invention is done detailed explanation.
1, pump case; 2, impeller; 3, plug cock; 4, fixed head; 5, protective cover; 6, motor body; 7, fan; 8, pressure switch; 9, power line; 10, charge valve; 11, pressure indicator; 12, carriage; 13, supporting bracket; 14, ventilation hole; 15, interior mechanical seal; 16, lubricating oil; 17, pump cover; 18, outer mechanical seal; 19, pad; 20, axle; 21, sealing ring; 22, nut; 23, lid; 24, impeller drum; 25, plenum chamber.
The invention discloses a kind of suspended explosion-proof electric motor, now be described below: motor body 6 is arranged with suspended explosion-proof electric motor and the pump that is driven, End cover for motor and fixed head 4 are made one, and fixed head 4 docks with protective cover 5 sealings and constitutes air chamber 25, and motor body 6 is installed in the air chamber.Axle 20 passes closed chamber and stretches out, mechanical seal 15 and outer mechanical seal 18 in being equipped with, and the end face of interior mechanical sealing linkage ring is headed on by impeller drum 24 end faces that stretch into closed chamber, can use pad 19 in order to enlarge bearing-surface; Outer mechanical sealing linkage ring is contained in the cylindrical of impeller drum, is full of lubricating oil 16 in the closed chamber, can open plug cock 3 when changing oil, spindle nose is installed nut 22, is tightly connected with impeller 2 to cover 23, can adorn rust inhibitor in the lid 23, motor shaft 20 no longer contacts with overcurrent liquid like this, can prevent the motor shaft corrosion effectively.The also available seal of mechanical seal, but will configure lubricated machinery, forbid doing and change.The other end of motor reel has fan 7, fan can be axial-flow type without fan guard.Carriage 12 is for setting pressure switch 8 and capacitor (monophase machine needs capacitor), and power line 9, charge valve 10 and pressure indicator 11 can be installed in protective cover 5 or be installed in the appropriate location of fixed head 4, and communicate with air chamber 25, but do not make gas leakage.Pump case 1, pump cover 17 can be contained on the fixed head 4, and impeller 2 is contained on the axle 20.Could start after being inflated to certain pressure before this unit uses, if pressure drops to designated value, pressure switch 8 can be cut off the electricity supply automatically, because the air chamber internal pressure is outer higher than air chamber during work, outside inflammable substance can not enter air chamber 25, is that nitrogen or inert gas are then more safe and reliable as the gas in the air chamber.As have additional a palm plate 13 of ventilation hole 14, and make motor supporting firmly, increase radiating effect.Also can be installed in pressure switch and capacitor on the supporting bracket 13, and without carriage 12.
Claims (3)
1, a kind of suspended explosion-proof electric motor is made up of institutes such as motor body, fixed head and protective covers, it is characterized in that motor body (6) is installed in the sealing plenum chamber (25) of protective cover (5) and fixed head (4) formation.
2, suspended explosion-proof electric motor as claimed in claim 1 is characterized in that being filled with nitrogen or inert gas in the air chamber (25) that protective cover (5) and fixed head (4) constitute, and motor body (6) is installed in the air chamber that is filled with nitrogen or inert gas.
3, suspended explosion-proof electric motor as claimed in claim 1 is characterized in that air chamber is equipped with pressure indicator (11) and power supply pressure switch (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90101116 CN1048828C (en) | 1990-02-26 | 1990-02-26 | Suspended explosion-proof electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90101116 CN1048828C (en) | 1990-02-26 | 1990-02-26 | Suspended explosion-proof electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1054339A CN1054339A (en) | 1991-09-04 |
| CN1048828C true CN1048828C (en) | 2000-01-26 |
Family
ID=4876946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90101116 Expired - Fee Related CN1048828C (en) | 1990-02-26 | 1990-02-26 | Suspended explosion-proof electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048828C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823028B1 (en) * | 1995-04-24 | 1998-12-23 | Svanehoj International A/S | A safety pumping system |
| ITMI20060191A1 (en) * | 2006-02-03 | 2007-08-04 | Abb Service Srl | ELECTRIC MACHINE TO EXPLOSION PROVAS |
| SG195053A1 (en) | 2011-05-20 | 2013-12-30 | Raghavendra Rao Turlapati | Catalysts for production of combustible fuel and fixed carbons from homogeneous and heterogeneous waste |
| CN113659777B (en) * | 2021-10-11 | 2022-06-17 | 常州宝罗电机有限公司 | Permanent magnet DC brushless motor |
-
1990
- 1990-02-26 CN CN 90101116 patent/CN1048828C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1054339A (en) | 1991-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |