Segmental structure for stirring head and main shaft of multi-stage submerged desilting pump
The technology of a segmented structure and stirring head is applied to the components, pumps, and pump components of the pumping device for elastic fluids, which can solve the problems of increasing cost, affecting the machining accuracy, and the length of the main shaft, so as to reduce the production cost, The effect of increasing versatility
Inactive Publication Date: 2013-09-25
JIANGSU UNIV
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Problems solved by technology
The multi-stage submersible dredging pump of the present invention has a whole-shaft structure before it is improved. The stirring head, the impeller and the motor are assembled on the same shaft. The main shaft is very long and the rigidity is poor, which is not conducive to turning processing
It is difficult to clamp during processing, and due to the cutting force and vibration, the circular runout is large, which affects the processing accuracy, resulting in high loss rate and scrap rate
At the same time, special assembly line processing and manufacturing are required to increase production costs and reduce production efficiency
In order to fix the stirring head, a very long sleeve is required at the end of the pump shaft, and the top nut is added, which also increases the cost
Method used
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[0015] attached image 3 It adopts the segmented structure of the stirring head and the main shaft of the present invention. The structure of the lower main shaft section where the stirring head is located is connected with the upper main shaft section where the motor and the impeller are located. There is a disc structure at the top of the lower main shaft section, and two 1 / 4 arc-shaped slot holes are symmetrically arranged and processed, and at the same time, four holes are uniformly tapped at the positions corresponding to the slot holes of the impeller hub. When assembling, after the shaft where the stirring head is located is in place, install two stainless steel flat-head slotted screws symmetrically. attached Figure 5 It can replace the impeller nut structure of the lower main shaft section under the condition that the stirring head is not required. Manufacture of this segmented structure is easily achieved by machining.
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The invention provides a segmental structure for the stirring head and the main shaft of a multi-stage submerged desilting pump and relates to a submersed desilting machine. The innovation of the segmental structure lies in that a lower main shaft segment where the stirring head is located is in threaded connection with an upper main shaft segment where the motor and an impeller are located; a disk structure is arranged at the top end of the lower main shaft segment; two one-fourth circular arc-shaped slotted holes are symmetrically formed in the disk structure; meanwhile, four threads are uniformly distributed on an impeller hub in positions corresponding to the slotted holes. During assembly, after the lower main shaft segment where the stirring head is located is arranged in place, two stainless steel flat head slotted screws are mounted symmetrically. On the working condition that the stirring head is not needed, the lower main shaft segment can be replaced by an impeller nut. The segmental structure has the benefits that the length of a main shaft is shortened, the universality of the main shaft is improved, the machining difficulty and the production cost are lowered, and the production efficiency of enterprises is increased.
Description
Technical field [0001] The invention relates to a segmented structure of a mixing head and a main shaft of a multistage submersible dredging pump, relates to underwater dredging machinery, and belongs to the technical field of general machinery manufacturing. Background technique [0002] The multi-stage submersible dredging pump is a machine-pump integrated hydraulic machine in which the motor and the water pump coaxially submerge into the medium. Conveying media such as sediment, ore slurry, coal slurry, sand and gravel containing larger solid particles. The pump is equipped with a stirring head at the end of the pump shaft. The stirring head rotates synchronously with the impeller, which can spray the deposited sludge into turbulent flow, so that the pump can achieve high-concentration delivery without auxiliary devices such as high-pressure water guns. The particle-containing medium is stirred and evenly stirred under the action of the jet water column formed by the rot...
Claims
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IPC IPC(8): F04D29/043F04D7/04
Inventor 曹卫东胡啟祥代珣刘光辉
Owner JIANGSU UNIV