Safe water-saving low-fault double-pipe long-shaft submerged pump
A submerged pump, a safe technology, applied in the direction of pumps, pump devices, pump components, etc., can solve the problems of low service life, large radial force, high operating cost, etc., to increase service life, reduce failure rate, and reduce costs Effect
Active Publication Date: 2012-07-04
江苏滔海机械制造有限公司
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Problems solved by technology
[0003] In order to solve the problems in the prior art that the radial force of the double-tube long-axis submerged pump is relatively large, the sliding bearing is easy to wear and vibrate during operation, the service life is low, the failure rate is high, and the operating cost is also relatively large. The present invention provides A double-tube long-axis submerged pump with long-term operation safety, long service life and low operation cost
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[0017] Such as figure 2 As shown, a safe, water-saving and low-failure double-pipe long-axis submerged pump includes a motor 1, a bottom plate 11, a connecting pipe 18, a liquid outlet pipe 28, an axial flow pump and a centrifugal pump, the submerged part is below the bottom plate 11, and the bottom plate The above is the upper part of the liquid. A centrifugal pump is arranged below the bottom plate 11, a centrifugal impeller 15 is arranged in the centrifugal pump 11, an axial flow pump is arranged below the centrifugal pump, the centrifugal pump is connected with the axial flow pump through a connecting pipe 18, and in the axial flow pump An axial-flow impeller 26 is provided, and a liquid outlet pipe 28 passing through the bottom of the bottom plate 11 and extending into the top of the bottom plate 11 is provided on the side of the centrifugal pump. A filter 27 is arranged on the lower liquid inlet of the axial flow pump, and a guide body 25 for delivering liquid to the c...
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The invention discloses a safe water-saving low-fault double-pipe long-shaft submerged pump, which comprises a motor, a soleplate, a liquid-discharging pipe, a connecting pipe, an axial-flow pump and a centrifugal pump, and is characterized in that: the centrifugal pump is arranged below the soleplate, a centrifugal-type impeller is arranged in the centrifugal pump, the motor is arranged above the soleplate, an output shaft of the motor is connected with a transmission shaft of the centrifugal-type impeller through a shaft coupler, the axial-flow pump is arranged below the centrifugal pump, the centrifugal pump is connected with the axial-flow pump through the connecting pipe, an axial-flow type impeller is arranged in the axial-flow pump, the transmission shaft of the centrifugal-type impeller extends into the axial-flow type impeller, and the liquid-discharging pipe is arranged on the lateral surface of the centrifugal pump. The problems that the radial force of the double-pipe long-shaft submerged pump is larger, a sliding bearing during operation is easy to abrade, the double-pipe long-shaft submerged pump is easy to vibrate, the service life is short, the fault rate is high, and the operating cost is also larger in the prior art are solved according to the invention, and the double-pipe long-shaft submerged pump with safe long-time operation, longer service life and lower operating cost is provided.
Description
technical field [0001] The invention relates to the technical field of hydraulic water pumps, in particular to a safe, water-saving and low-failure double-tube long-axis submerged pump. Background technique [0002] At present, the sewage, dirty oil and chemical medium lift pumps in the petroleum, chemical, electric power and rubber industries in the country, with a flow rate of 5-500m3 / h, generally use double-tube long-axis submerged pumps, such as figure 1 As shown, the pump structure: the pump body is under the liquid, supported by the connecting pipe, and the transmission shaft is supported by the sliding bearing. Sliding bearings are flushed and lubricated by external cooling water. Since the liquid is output from another pipe next to the pump body, according to "Newton's law", the pump generates a radial force when it is working, and the size of the radial force is determined by the flow rate and head of the pump. The greater the axial force, the higher the lift and ...
Claims
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IPC IPC(8): F04D13/12F04D29/70F04D29/54F04D29/043F04D29/046
Inventor李建秋赵君昌李靖
Owner江苏滔海机械制造有限公司