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Single-stage centrifugal pump with balanced axial force

A technology of axial force and centrifugal pumps, applied in pumps, components of pumping devices for elastic fluids, pump elements, etc., can solve problems such as large leakage losses, poor balance effects, and reduced efficiency, and achieve overall pressure Low, improved hydraulic performance, and improved efficiency

Inactive Publication Date: 2012-01-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the prior art, such as large leakage loss, reduced efficiency, and poor balance effect, the present invention provides a single axial force balance device that reduces leakage, has less damage to the inlet flow state, and improves the axial force balance effect. stage centrifugal pump

Method used

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  • Single-stage centrifugal pump with balanced axial force
  • Single-stage centrifugal pump with balanced axial force
  • Single-stage centrifugal pump with balanced axial force

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Refer to attached figure 1 , 2 , the one-way centrifugal pump with axial force balance in the present invention comprises a pump body 3, a front pump cover 1, an impeller 2, a rear pump cover 4, a rear cover plate mouth ring 7, a bearing body 5, and the rear part of the rear cover plate A balance chamber 13 is formed, and the balance chamber 13 of the rear cover communicates with the suction port of the impeller 2 . The impeller 2 has an inclined balance hole 6, the balance hole 6 is located near the hub at one end of the suction inlet of the impeller 2, and is located at the end of the balance chamber 13 away from the hub. The center line of the balance hole 6 is at an angle to the axis of the hub; the diameter of the impeller rear port ring 7 is larger than that of the front port ring 8 , and the length of the rear port ring 7 is longer than that of the fron...

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Abstract

The invention discloses a single-stage centrifugal pump with a balanced axial force, which comprises a pump body, a front pump cover, an impeller, a rear pump cover, a rear cover plate opening ring and a bearing body, wherein a balancing chamber is formed by the rear part of a rear cover plate; the balancing chamber of the rear cover plate is communicated with an impeller suction port; the impeller is provided with an inclined balancing hole; one end of the balancing hole, which is positioned at the impeller suction port, is close to the position of a hub; one end of the balance hole, which is positioned on the balance chamber, is away from the position of the hub; an angle is formed by a center line of the balancing hole and the axial line of the hub; the diameter of a rear opening ring of the impeller is greater than that of a front opening ring of the impeller; and the length of the rear opening ring is greater than that of the front opening ring. According to the single-stage centrifugal pump disclosed by the invention, the balance of the axial force can be better achieved.

Description

(1) Technical field [0001] The invention relates to a single-stage centrifugal pump. (2) Background technology [0002] The axial force balance device is an important part of the pump, which plays a key role in the safety, reliability and durability of the pump operation. According to actual production statistics, failures caused by axial force account for more than 40% of pump failures, and its maintenance workload also accounts for a large proportion. The method of balancing the axial force with the balance hole is simple in structure, easy to process and install, so it is widely used. When the balance hole is used to balance the axial force, two sealing rings with the same diameter are installed on the front and rear cover plates of the impeller, and six small holes are evenly opened below the mouth ring of the impeller rear cover plate, which are called balance holes. The balance chamber of the back cover is connected with the impeller suction port to achieve the purpo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/66
Inventor 牟介刚赵锦靖郑水华陆河权汪慧
Owner ZHEJIANG UNIV OF TECH
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