CN2390032Y - Single stage double inlet centrifugal pump set - Google Patents
Single stage double inlet centrifugal pump set Download PDFInfo
- Publication number
- CN2390032Y CN2390032Y CN 99239920 CN99239920U CN2390032Y CN 2390032 Y CN2390032 Y CN 2390032Y CN 99239920 CN99239920 CN 99239920 CN 99239920 U CN99239920 U CN 99239920U CN 2390032 Y CN2390032 Y CN 2390032Y
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- CN
- China
- Prior art keywords
- pump
- motor
- water
- cover
- stage double
- Prior art date
- 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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Abstract
The utility model relates to a single stage double-suction centrifugal pump set, which comprises a pump body, a pump shaft, an impeller, a motor, a mechanical seal device, and a pump cover. The motor is fixedly connected with the pump body and a left pump cover of the pump cover by a rigid mode. The motor is not provided with an external fan. A casing body of the motor is provided with a motor casing sleeve which forms a cooling water interlayer. The pump cover is provided with a water inlet flow guiding plate which is made into integration together with an external sealing ring seat of the impeller. A water inlet cavity of the pump body is provided with an isolating tongue, and the middle of the tongue is provided with a hole. The hole is communicated with a water outlet cavity of the pump body and the cooling water interlayer through holes on the pump cover and an end cover of the motor. The mechanical seal device is arranged on a position which is contacted with the pump body and is on one end of the pump shaft. The utility model has the advantages of low noise, small vibration, convenient maintenance, and convenient assembly and disassembly. The utility model has alarm protection when the utility model runs.
Description
The utility model relates to centrifugal pump, particularly a kind of can reduce equipment acoustic noise, pump all-in-one-piece single-stage double-suction centrifugal pump unit.
Existing single-stage double-suction centrifugal pump unit, its water pump and motor are independent respectively to be provided with, water pump spindle relies on the bearings at both ends supporting fixing, water pump, motor are installed coupling and are come transmitted power, independently water pump spindle and rotor are installed wasting time and energy on time, diaxon concentric error and coupling high speed rotating and bearing itself have all produced noise, the heating of motor relies on the air-flow that motor ventilating fan produced to cool off, thus, the sound that electromagnetism is called and the motor ventilating fan air-flow is produced of motor internal generation just becomes two main noise sources of unit.Some is that mechanical seal commonly used is installed between the water pump spindle and the pump housing, and during maintenance, dismounting bearing and knockout machine envelope stationary ring are all very inconvenient.
The purpose of this utility model provides a kind of improved single-stage double-suction centrifugal pump unit, and it is a pump machine one, without coupling and motor ventilating fan, has reduced noise, and has realized the unit cooling by cooling water sandwich.
A kind of single-stage double-suction centrifugal pump unit described in the utility model comprises the pump housing, the water pump spindle that in the pump housing, is provided with, impeller and motor, seal arrangement, and pump cover, described motor is fixedlyed connected rigidly with the left pump cover of the pump housing and pump cover, do not have on the motor and establish external fan, the casing cover that constitutes cooling water sandwich is housed on the motor housing; Described pump cover is provided with the water inlet guide plate of making one with the impeller outer seal ring seat; Be provided with cut water porose in the middle of in the water-inlet cavity of the described pump housing, this hole is communicated with pump housing water chamber and cooling water sandwich by the hole on pump cover, the electric motor end cap; Described seal arrangement is a mechanical seal device, is installed on water pump spindle one end and pump housing position contacting.
The utlity model has following advantage:
1, motor does not have fan, and a main sound source of motor commonly used is removed, and motor housing is provided with cooling water sandwich, make motor internal electromagnetic sound sound source covered every, thereby greatly reduce the noise of water pump assembly.
2, rotor and water pump spindle unification has best concentricity, can not occur vibration and noise in the running, and does not have because of the uneven vibration that causes of coupling with by noise that high speed rotating produced.
3, pump shaft one end is a submerged bearing in the pump chamber, removed appearance two rolling bearings of existing single-stage double-suction centrifugal pump itself, and the slip submerged bearing is steady more noiseless than rolling bearing, has reduced the vibration and the sound that occur when two rolling bearings run up again in the inside of pump.
4, pump is whole connects, and size reduces, and the complete machine good rigidly also descends vibration, noise to some extent.
5, cooling motor water enters the motor cooling water sandwich from the water pump water outlet chamber by cut water, pump cover, electric motor end cap hole system in the water-inlet cavity, does not need external pipeline, and mounting or dismounting are convenient when the maintenance pump.
When 6, changing impeller, impeller outer seal ring and mechanical seal device, only need to remove the outer end pump cover, need not dismantle the rolling bearing of mounting or dismounting difficulty, make it easy to maintenance.
7, existing machinery stationary seal ring cylindrical is smooth, and is very inconvenient during dismounting, and the groove structure of the stationary ring cylindrical of this mechanical seal device makes that the dismounting stationary seal ring is very convenient.
8, after motor external refrigeration water makes the casing scaling, cause motor radiating bad, and after the utility model is provided with thermistor, when generating incrustation scale and make that the motor feels hot reaches critical, can provide the security alarm signal.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a kind of structural representation of single-stage double-suction centrifugal pump unit.
Fig. 2 is by right TV structure schematic representation shown in Figure 1.
Fig. 3 is the stationary ring structural representation of mechanical seal device in the above-mentioned centrifugal pump unit.
Referring to Fig. 1 to Fig. 3, a kind of single-stage double-suction centrifugal pump unit comprises the pump housing 1, the water pump spindle, impeller 2 and the motor 3 that are provided with in the pump housing 1, seal arrangement, and pump cover 4.
Water pump spindle and rotor integrator are pump shaft 5, are the same axis structures, and without coupling.Pump shaft 5 one ends are positioned at the pump housing 1 and do not stretch out outside the pump housing 1, and sliding bearing 6 is housed on the right pump cover 42 of pump cover 4, and pump shaft 5 one ends rely on this sliding bearing 6 supportings exactly.Support without rolling bearing the other end of pump shaft 5, and directly form the rotor supporting.
Pump cover 4 is provided with the water inlet guide plate 9 of making one with impeller 2 external sealed ring seats 8, and water inlet guide plate 9 is provided with four.These four water inlet guide plates 9 can improve the water inlet condition of pump, as shunting, prewhirl etc.
Be provided with cut water 11 porose in the middle of in the water-inlet cavity 10 of the pump housing 1, this hole is communicated with the pump housing 1 water chamber 12 and cooling water sandwich 71 by the hole on left pump cover 41, the electric motor end cap 31.The heat that produces during motor 3 operation is flow through by the water pump high pressure water and to be located at the hole in the cut waters 11 in the water-inlet cavity 10, and the hole on left pump cover 41, electric motor end cap 31 is to motor 3 cooling water sandwich 71 cooling motors 3, takes away after being back to pump water inlet chamber 10 again.
Seal arrangement of the present utility model is a mechanical seal device 13, is installed on pump shaft 5 one ends and the pump housing 1 position contacting.Stationary ring 131 cylindricals of mechanical seal device 13 are provided with groove 132 (as shown in Figure 3), are convenient to utilize instruments such as bottle opener to take out easily.
The inner chamber of motor 3 is provided with 15, three thermistors 15 of thermistor that are series between the coil and is serially connected with between three groups of coils.Resistance signal line 16 is introduced terminal boxes 17, detects when motor 3 is bad because of the incrustation scale heat radiation, temperature raises reaches capacity so that be connected to electric control box, sends signal or cuts off the electricity supply.
When maintenance, pull down pump cover 4, sliding bearing 6 and pump shaft 5 be natural separation just.Impeller 2 external sealed ring seats 8 and four guide plates 9 (as shown in Figure 2) and pump cover 4 link together, and so can be convenient to dismounting, change impeller outer seal ring 14, impeller 2 and mechanical seal device 13.
Working procedure of the present utility model is as follows:
After motor connected power supply, rotor was that pump shaft rotates, the impeller rotation, and the liquid in the impeller is because the blade effect, its speed and pressure raise, and enter water-pumping chamber, are extruded outside the pump by pumping chamber, simultaneously, liquid is inhaled into impeller from the water-inlet cavity of impeller both sides, forms the continuous operation of pump.Suction eye relies on the clearance seal between impeller port ring and outer seal ring, reaches water-inlet cavity with the water-stop between pumping chamber.Water-stop between pump shaft and pump cover relies on mechanical seal device to realize.The no rolling bearing of water pump itself is made aiding support by the submerged bearing in rotor supporting and the pump.Hole in cut water, pump cover and the electric motor end cap of pumping chamber part highly pressurised liquid in water-inlet cavity enters the motor cooling water sandwich, carry out heat exchange with motor housing after, the pump water inlet chamber is got back in the hole in electric motor end cap, pump cover, reaches the purpose of cooling motor.Owing to reasons such as build-up of limescale, the heat exchanging function of cooling water sandwich descends, and motor winding temperature rise increases, and when temperature rose to 135 ℃, the thermistor resistance was about 3 * 1330 ohm, and motor control box is made malfunction alarm or shut down action.
Claims (5)
1. single-stage double-suction centrifugal pump unit, it comprises the pump housing, the water pump spindle that in the pump housing, is provided with, impeller and motor, seal arrangement, and pump cover, it is characterized in that described motor is fixedlyed connected rigidly with the left pump cover of the pump housing and pump cover, do not have on the motor and establish external fan, the casing cover that constitutes cooling water sandwich is housed on the motor housing; Described pump cover is provided with the water inlet guide plate of making one with the impeller outer seal ring seat; Be provided with cut water porose in the middle of in the water-inlet cavity of the described pump housing, this hole is communicated with pump housing water chamber and cooling water sandwich by the hole on pump cover, the electric motor end cap; Described seal arrangement is a mechanical seal device, is installed on water pump spindle one end and pump housing position contacting.
2. single-stage double-suction centrifugal pump unit according to claim 1 is characterized in that described water pump spindle and rotor integrator are pump shaft, and pump shaft one end is positioned at the pump housing and does not stretch out outside the pump housing.
3. single-stage double-suction centrifugal pump unit according to claim 1 is characterized in that, on the right pump cover of described pump cover sliding bearing is housed.
4. single-stage double-suction centrifugal pump unit according to claim 1 is characterized in that the stationary ring cylindrical of described mechanical seal device is provided with groove.
5. single-stage double-suction centrifugal pump unit according to claim 1 is characterized in that the inner chamber of described motor is provided with the thermistor that is series between the coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239920 CN2390032Y (en) | 1999-10-14 | 1999-10-14 | Single stage double inlet centrifugal pump set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99239920 CN2390032Y (en) | 1999-10-14 | 1999-10-14 | Single stage double inlet centrifugal pump set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2390032Y true CN2390032Y (en) | 2000-08-02 |
Family
ID=34027086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99239920 Expired - Fee Related CN2390032Y (en) | 1999-10-14 | 1999-10-14 | Single stage double inlet centrifugal pump set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2390032Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852810A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Amphibious hard-alloy mining vertical pump capable of running in idling or being in series-connection |
| CN102852809A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN103511318A (en) * | 2012-06-15 | 2014-01-15 | 上海连成（集团）有限公司 | Double-suction AY-type oil pump of self-lubricating bearing |
-
1999
- 1999-10-14 CN CN 99239920 patent/CN2390032Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852810A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Amphibious hard-alloy mining vertical pump capable of running in idling or being in series-connection |
| CN102852809A (en) * | 2011-06-27 | 2013-01-02 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN102852809B (en) * | 2011-06-27 | 2015-06-10 | 王喜冬 | Hard alloy amphibious mine vertical pump capable of being idled and connected in series |
| CN102852810B (en) * | 2011-06-27 | 2015-07-29 | 王喜冬 | Cemented carbide idle running can be connected amphibious vertical pump for mine |
| CN103511318A (en) * | 2012-06-15 | 2014-01-15 | 上海连成（集团）有限公司 | Double-suction AY-type oil pump of self-lubricating bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |