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High salt tolerance BPMC type horizontal multi-stage centrifugal pump for extracting lithium by applying salt lake film method

A centrifugal pump and salt-resistant technology, applied in the field of centrifugal pumps, can solve problems such as low working efficiency and immature technology, and achieve the effects of wide high-efficiency area, broad market prospects, and easy promotion

Pending Publication Date: 2019-03-19
SHANGHAI BANGPU INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing high-efficiency and high-pressure horizontal multi-stage centrifugal pump used in the salt lake membrane lithium extraction system to increase the pressure of the salt lake raw water from the pressure exchange energy recovery system and then transport it to the membrane is currently not available in China. , while the work efficiency of foreign equipment is low, and the technology is not yet mature

Method used

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  • High salt tolerance BPMC type horizontal multi-stage centrifugal pump for extracting lithium by applying salt lake film method
  • High salt tolerance BPMC type horizontal multi-stage centrifugal pump for extracting lithium by applying salt lake film method

Examples

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Embodiment 1

[0017] see figure 1 , the present invention provides a high-salt-tolerant BPMC horizontal multi-stage centrifugal pump applied to salt lake membrane method for lithium extraction, the pump body includes an inlet section 1, a middle section 2, an outlet section 3, guide vanes 4, outlet guide vanes 5, The first stage impeller 6, impeller 7, pump shaft 8, sealing box 9, bearing bracket 10, bearing 11 and coupling 12, the inlet section 1, middle section 2 and outlet section 3 are connected into one body by tension bolts 13, The inner cavity of the pump body is provided with a balancing device for balancing the axial force generated by each stage of the impeller, and each component in the pump body is made of stainless steel.

[0018] In a specific implementation process, the balance device includes a balance plate 14 and a balance plate 15 , the balance plate 14 is set on the pump shaft, and the balance plate 15 is in close contact with the balance plate 14 .

[0019] Through thi...

Embodiment 2

[0024] Such as figure 2 As shown, the rest are the same as in Embodiment 1, except that the balance device adopts a balance drum 16 and a balance drum sleeve 17, and the balance drum 16 is set on the pump shaft, and the balance drum sleeve 17 sets Outside the balance drum 16, when this structure is adopted, the end bearing 11 adopts a set of angular contact bearings, which are lubricated by thin oil.

[0025] Based on the above, the present invention has the advantages of: the present invention adopts two sets of devices for balancing the axial force of the impeller, and the high-efficiency area is wide; all parts are made of duplex stainless steel, which has strong corrosion resistance and can transport 3400000ppm high-concentration chlorine The ionic solution, whose overall structure is suitable for use in "extracting lithium by membrane method", has a relatively broad market prospect and is easy to promote.

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Abstract

The invention discloses a high salt tolerance BPMC type horizontal multi-stage centrifugal pump for extracting lithium by applying the salt lake film method. The pump body comprises an inlet section,a middle section, an outlet section, a guide vane, an outlet guide vane, a first stage impeller, impellers, a pump spindle, a sealing box body, a bearing bracket, a bearing and a coupling, wherein theinlet section, the middle section and the outlet section are integrally connected through draw-in bolts; two sets of balancing devices for balancing axial force generated by each stage of impeller are arranged in the inner cavity of the pump body; and each component of the pump body is made of stainless steel. The two sets of balancing devices are adopted and have high efficiency area width; eachof the components adopts duplex stainless steel material, is high in corrosion resistance and can convey chloridion-containing solution with the concentration being 3,400,000 ppm; and the whole structure of the high salt tolerance BPMC type horizontal multi-stage centrifugal pump is suitable for extracting lithium by applying the film method, and the high salt tolerance BPMC type horizontal multi-stage centrifugal pump has broader market prospect and and is convenient to popularize.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a high-salt-tolerant BPMC horizontal multistage centrifugal pump used in salt lake membrane method for lithium extraction. Background technique [0002] The existing high-efficiency and high-pressure horizontal multi-stage centrifugal pump used in the salt lake membrane lithium extraction system to increase the pressure of the salt lake raw water from the pressure exchange energy recovery system and then transport it to the membrane is currently not available in China. , while the work efficiency of this foreign equipment is low, and the technology is not yet mature. [0003] With the development of society and science and technology, the problems of energy and environmental pollution are becoming more and more serious. Lithium is widely used as a recognized new green material. Lithium resources in nature mainly exist in brine, especially salt lake brine, and its reser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/06F04D7/06F04D29/02F04D29/041F04D29/044F04D29/08F04D29/60
CPCF04D1/06F04D7/06F04D29/026F04D29/041F04D29/044F04D29/086F04D29/605
Inventor 沈峥谢芳顾敏燕黄欣
Owner SHANGHAI BANGPU INDAL GROUP