Double-centrifugal-pump device free in serial connection and parallel connection switching
A double-centrifugal pump and centrifugal pump technology, which is applied to pump devices, pumps, non-variable pumps, etc., can solve the problems of large flow rate, low filter press efficiency, and small flow rate of filter press liquid, and achieve broad application prospects and practicality Strong, Simple Effects
Inactive Publication Date: 2015-09-09
JISHOU UNIVERSITY
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Problems solved by technology
[0004] However, in the filter press operation, the existing centrifugal pumps cannot automatically adapt to such a process to achieve an ideal working state of high efficiency and high quality
Generally, when a centrifugal pump performs filter press operation, the head of the filter press is low in the early stage, but the flow rate is large, so that the motor is in an overload state, and it is easy to burn the motor; The flow rate decreases rapidly. At this time, although the motor works in a light-load and low-power state, the filter press efficiency is very low; although the filter press pump has the maximum head output state, due to the small flow rate of the filter press fluid, the filter press cannot be fully utilized. Work performance and improve work efficiency
Method used
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[0017] The present invention will now be further described in detail with reference to the drawings.
[0018] Such as figure 1 with figure 2 The double centrifugal pump device with free switching between series and parallel shown includes inlet pipe 1, two centrifugal pumps 6, 7 and outlet pipe 2. The two centrifugal pumps are driven by the same motor through a belt; the inlet pipe 1 branches into two pipes, One pipe is connected to the outlet pipe 2 through the three-way cock 4 and the centrifugal pump 7, and the other pipe is connected to the outlet pipe 2 through the other centrifugal pump 6 and the other three-way cock 5; two three-way cock 4 and 5 are connected through the central joint pipe 3 Connect up and down.
[0019] figure 1 versus figure 2 Different states for the same device, figure 1 The centrifugal pumps 6 and 7 are used to transport fluid in parallel. The first branch of the inlet pipe 1 is connected to the centrifugal pump 6. The outlet pipe of the centrifugal...
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The invention discloses a double-centrifugal-pump device free in serial connection and parallel connection switching. The double-centrifugal-pump device comprises an inlet pipe, two centrifugal pumps and an outlet pipe, wherein the two centrifugal pumps are driven by one same motor through a belt; the inlet pipe includes two pipelines, one of the pipelines is connected with the outlet pipe through a three-way cock and one of the centrifugal pumps, and the other pipeline is connected with the outlet pipe through the other centrifugal pump and another three-way cock; the three-way cocks are vertically communicated through an intermediate connecting pipe. The double-centrifugal-pump device has the advantages that free centrifugal pump serial connection and parallel connection switching operation is achieved by reasonable and simple pipeline design and the two three-way cocks, and filter pressing work efficiency is increased greatly; compared with a conventional serial connection and parallel connection pipeline valve switching device, the double-centrifugal-pump device is simple in structure, simple to operate, less prone to errors, low in cost and high in practicality.
Description
Technical field [0001] The invention relates to a double centrifugal pump device, in particular to a double centrifugal pump device that can freely switch between series and parallel. Background technique [0002] Because of its simple and durable structure, reliable use, high efficiency, large flow and low cost, centrifugal pumps are the most commonly used liquid conveying power machinery. It is derived from the working principle of centrifugal pumps, so there are corresponding centrifugal pump characteristic curves and calibration parameters of centrifugal pumps. It is the flow and head parameters corresponding to the centrifugal pump at the highest efficiency point. In actual use, the working parameters of the centrifugal pump do not deviate too much from the calibration parameters, which is a reasonable working range. [0003] In the field of large-scale filter press, the plate and frame filter press is generally the first choice, and the centrifugal pump is used as the filter ...
Claims
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IPC IPC(8): F04D13/14
Inventor 银永忠姚茂君
Owner JISHOU UNIVERSITY