CN1047370A - Submersible pump - Google Patents
Submersible pump Download PDFInfo
- Publication number
- CN1047370A CN1047370A CN 89103363 CN89103363A CN1047370A CN 1047370 A CN1047370 A CN 1047370A CN 89103363 CN89103363 CN 89103363 CN 89103363 A CN89103363 A CN 89103363A CN 1047370 A CN1047370 A CN 1047370A
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- pump
- submersible pump
- end cap
- motor
- air chamber
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Abstract
A kind of submersible pump, its pump case top have the mouth of extrusion and outlet passage, between air chamber and pump case inlet hole are arranged, and when adopting the one step single sucking impeller, the relief hole on the pump lower end cap is balancing axial thrust fully.When adopting the single-stage double-suction impeller, the pump lower end cap leaves the water sucking mouth, and the axial force of pump obtains optimal balance.This submersible pump is suitable for use in and contains the more place of silt particle in the water.
Description
Separate (" the agricultural well pump " that water breakthrough power electric power publishing house publishes, in January, 1978 Beijing version) with lower bracket and rubber oil sea between the motor cavity of aeroseal submersible pump in the past and the air chamber, enter in the motor cavity in the hope of the moisture that stops air chamber; The suction port of submersible pump impeller on the back shroud of blade, comes balancing axial thrust with the seal ring that increases down.But in practice, motor Chang Yin makes moist and insulation is descended, and excessive because of axial force simultaneously, bearing heating seriously burns.Its reason is: during motor rotation, the heat of electromagnetism and bearing makes the motor cavity increased pressure, has quickened the wearing and tearing of oil sealing, makes oil sealing rubber aging rapidly.After oil sealing is destroyed, air leakage will be arranged.After the termination of pumping, the motor cavity temperature descends pressure is reduced, and will suck moisture in air.When the vibration of casing and axle acquired a certain degree when the moisture in the air chamber mainly was pump operation, on the interface, produce cavity, and on liquid level, stir the tiny globule and swim in and produce in the air.This breathing phenomenon of motor is prolonged and repeated to carry out, and finally is directed at motor insulation is descended.In addition, though submersible pump impeller has been taked the measure of balancing axial thrust, but each turn on pump, termination of pumping, the capital makes pump shaft produce upper and lower play, particularly the fluid pressure that leaks from the back shroud of impeller seal clearance discharges not thoroughly, and impeller still is subjected to bigger axial force, and bearing is understood therefore overheated and lubricating condition is degenerated, at last, because of submersible pump under off-design behaviour, work make motor present the overload burn.
Order of the present invention is yes: for fear of the generation of above-mentioned situation, overcome the defective on the sealing configuration, prolong the life-span of motor shaft extension end seal and reduce axial force to greatest extent and designed submersible pump of the present invention.
Basic design of the present invention is: the motor of this submersible pump, air chamber and water pump, arrange from top to bottom.Extrusion mouth on the pump case and outlet passage are above impeller.The water that water pump extrudes upwards enters outlet passage through the extrusion mouth on the pump case, discharges from the water outlet at motor top at last.Between air chamber and pump case, inlet hole is arranged.Water radially enters the suction chamber on pump case top by this inlet hole, enters suction eye then.Therefore, when adopting the one step single sucking impeller, suction eye down, submersible pump of the present invention just becomes " up attraction type one step single sucking submersible pump ".At this moment, back shroud of impeller has seal ring, in the seal ring inboard, has equalizing orifice near on the position of impeller hub.The lower end cap of pump seals, but will open relief hole in lower end cap seal ring inboard.If the relief hole enlarged-diameter on the pump lower end cap, make another water sucking mouth into, just can adopt the single-stage double-suction impeller, submersible pump of the present invention just becomes " single-stage double-suction submersible pump ".In air chamber, at the motor lower end cap be contained on the motor shaft extension end seal casinghousing on the motor lower end cap, be respectively equipped with the resuscitation apparatus joint.This then have tiny hole to make ventilation mutually between motor cavity and air chamber and sealed two isolated chambers that separate, and can be used for the rubber or the plastics resuscitation apparatus of attaching bag shape or ring-type.This resuscitation apparatus can be at 0.005～0.1MP
aPressure under distending, it is flat to recover to contract behind the normal pressure.When not limiting the submersible pump external diameter, cable is introduced air chamber through inlet hole from the air chamber bottom.Air chamber bottom air chamber one side inboard and the motor lower end cap has cable entry.Cable can directly be introduced in the motor after entering cable entry on the motor lower end cap, also can earlier cable be introduced in the terminal box that be arranged on the motor lower end cap, is introduced in the motor by terminal box again.Submersible pump can be adorned an inclination warning circuit breaker.The vertical body that can keep the vertical state when submersible pump tilts is automatically arranged in the housing of this inclination warning circuit breaker, has and can contact with the vertical body, and in the contacting point conductive contact.When the inclined degree of submersible pump was in allowed band, vertical body and contact disconnected (or contact), at this moment submersible pump proper functioning.When the inclined degree of submersible pump surpassed permitted value, the vertical body contact (or disconnection) with contact, at this moment gave the alarm and cut off the power supply, and submersible pump is quit work.This inclination warning circuit breaker can be contained in the submersible pump body, also can be contained in external.During the submersible pump proper functioning, motor shaft extension end seal casinghousing will reach in the air chamber bottom water.Be not arranged on the bottom of seal casinghousing in the seal casinghousing near the motor shaft extension Sealing of air chamber bottom.In addition, can put rubber or plastics bump protection ring on the submersible pump shell, the appearance of this bump protection ring is the same with the rubber bump protection ring of hydrogen cylinder cover.
This submersible pump, when adopting the one step single sucking impeller, suction eye has been opened relief hole up on the pump lower end cap, make axial force obtain sufficient balance.After the pump lower end cap also leaves the water sucking mouth, adopt the single-stage double-suction impeller, axial force obtains optimal balance.Resuscitation apparatus joint on motor lower end cap and the seal casinghousing, and be contained in resuscitation apparatus on the joint, when adopting rubber oil sea or mechanical seal, motor shaft extension end is equipped with.This resuscitation apparatus can be the pressure of electric machine temperature rise or Sealing temperature rise generation by the distending of self or flat adjusting of contracting, it can make Sealing more constant, work under the condition near normal pressure, thereby can reduce the leakage of lubricant oil in the seal casinghousing, prolong the life-span of Sealing, avoid the seal failure of motor cavity internal cause and suck moisture.Because the pressure difference of air chamber and motor cavity is much smaller than the pressure difference of motor upper cover both sides, therefore, cable must be introduced air chamber from the air chamber lower end, introduce in the motor from the motor lower end cap again, only in this way, just can be the most safe and reliable.Motor shaft extension end adopts the mechanical end face seal of cemented carbide, and Sealing is located at air chamber to contain on the water surface of silt particle, if use inclination warning circuit breaker simultaneously, just can when submersible pump tilts to transfinite, report to the police automatically and cut off the power supply, can prevent effectively that Sealing is subjected to containing the wearing and tearing of silt particle sewage after toppling over because of submersible pump, this is comparatively ideal working surface submersible pump.Motor shaft extension end seal casinghousing reaches in the air chamber bottom water, but coolant seal spare lubricant oil can make the depositing in water of sneaking in the oil to the bottom.Be not arranged on the bottom of seal casinghousing in the seal casinghousing near the motor shaft extension Sealing of air chamber bottom, can make has air layer to stop sewage wearing and tearing Sealing between seal casinghousing and the axle.This submersible pump is moved continually shell is staggered along when working surface, on the submersible pump shell bump protection ring is housed, and can reduce the damage to submersible pump.
Be described in detail the present invention below by an embodiment.
Fig. 1 is the submersible pump generalized section of embodiment of the present invention.
A submersible pump, top in impeller (2), the mouth of extrusion and outlet passage (3) are arranged on pump case (12), between air chamber (5) and pump case (12), inlet hole (11) is arranged, on pump lower end cap (1), have the water sucking mouth, adopt single-stage double-suction impeller (2), embodiment of the present invention is exactly " a single-stage double-suction submersible pump ".Cable (8) enters air chamber (5) from air chamber (5) bottom by cable entry (10) through inlet hole (11), enters motor cavity (7) by the cable entry (9) on the motor lower end cap (6) again.In seal casinghousing (4), mechanical end face seal is housed.
During use, allow the water pump lower end down, vertically put into water, diving depth should adhere to specification.
Claims (9)
1, a kind of submersible pump, comprise pump case (12), pump lower end cap (1), motor lower end cap (6) and air chamber (5), it is characterized in that the mouth of extrusion and outlet passage (3) are arranged at pump case (12) top, between air chamber (5) and pump case (12), there is water can enter the inlet hole (11) of pump case (12) top suction chamber, has the hole that the energy pressure release maybe can absorb water in pump lower end cap (1) seal ring inboard.
2, submersible pump as claimed in claim 1 is characterized in that pump case (12) top has water can enter the inlet hole (11) of suction chamber, has relief hole in pump lower end cap (1) seal ring inboard, adopts up attraction type one step single sucking impeller; Also can have the water sucking mouth, adopt the single-stage double-suction impeller in pump lower end cap seal ring inboard.
3, submersible pump as claimed in claim 1 is characterized in that motor lower end (6) and is contained in the resuscitation apparatus joint being arranged respectively on the motor shaft extension end seal casinghousing on the motor lower end cap (6) and being contained in resuscitation apparatus on the joint.
4, submersible pump as claimed in claim 3 is characterized in that the resuscitation apparatus joint is 0.005～0.1MP at attaching pressure
aThe time automatic distending, recover can contract behind the normal pressure flat bag shape or the rubber or the plastics resuscitation apparatus of ring-type.
5, submersible pump as claimed in claim 1, it is characterized in that the inlet hole of cable through pump case top, enter air chamber by being located at the inboard cable entry in air bottom, again by directly introducing in the motor behind the cable entry of motor lower end cap (6) air chamber one side, after also can introducing the cable coupling box that is located at motor lower end cap air chamber one side, power supply is introduced in the motor.
6, submersible pump as claimed in claim 1 is characterized in that submersible pump is equipped with inclination warning circuit breaker.
7, submersible pump inclination warning circuit breaker as claimed in claim 6 is characterized in that tilting that the vertical body that can keep the vertical state when submersible pump tilts is automatically arranged in the warning contact-breaker cage, have can be with the vertical body contacted and in the contacting point conductive contact.
8, submersible pump as claimed in claim 1 is characterized in that the shaft extension end seal casinghousing on the motor for submerged pump lower end cap (6) reaches the air chamber bottom, is not arranged on the bottom of seal casinghousing in the seal casinghousing near the motor shaft extension Sealing of air chamber bottom.
9, submersible pump as claimed in claim 1 is characterized in that being with on the submersible pump shell ring-type vibrationproof circle of rubber or plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103363 CN1047370A (en) | 1989-05-13 | 1989-05-13 | Submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103363 CN1047370A (en) | 1989-05-13 | 1989-05-13 | Submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1047370A true CN1047370A (en) | 1990-11-28 |
Family
ID=4855083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89103363 Pending CN1047370A (en) | 1989-05-13 | 1989-05-13 | Submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047370A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667168A (en) * | 2009-09-23 | 2012-09-12 | 加德纳制造有限责任公司 | Winding device for the connection cable of a garden pump |
| CN104653474A (en) * | 2015-03-17 | 2015-05-27 | 浙江创美机电有限公司 | Symmetrical high-speed double-suction pump |
| CN105626576A (en) * | 2016-01-07 | 2016-06-01 | 江苏大学 | Hydraulic design method for sea water desalination high-pressure booster pump |
| CN109578293A (en) * | 2018-12-26 | 2019-04-05 | 合肥盛亚电机电泵有限公司 | A kind of double suction Downdraught submersible electric pump |
-
1989
- 1989-05-13 CN CN 89103363 patent/CN1047370A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102667168A (en) * | 2009-09-23 | 2012-09-12 | 加德纳制造有限责任公司 | Winding device for the connection cable of a garden pump |
| CN104653474A (en) * | 2015-03-17 | 2015-05-27 | 浙江创美机电有限公司 | Symmetrical high-speed double-suction pump |
| CN105626576A (en) * | 2016-01-07 | 2016-06-01 | 江苏大学 | Hydraulic design method for sea water desalination high-pressure booster pump |
| CN109578293A (en) * | 2018-12-26 | 2019-04-05 | 合肥盛亚电机电泵有限公司 | A kind of double suction Downdraught submersible electric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |