CN104895803A - Double-centrifugal-pump device free in switching series connection and parallel connection - Google Patents
Double-centrifugal-pump device free in switching series connection and parallel connection Download PDFInfo
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- CN104895803A CN104895803A CN201510374901.1A CN201510374901A CN104895803A CN 104895803 A CN104895803 A CN 104895803A CN 201510374901 A CN201510374901 A CN 201510374901A CN 104895803 A CN104895803 A CN 104895803A
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Abstract
The invention discloses a double-centrifugal-pump device free in switching series connection and parallel connection. The double-centrifugal-pump device comprises an incoming pipe, two centrifugal pumps and an outgoing pipe, the incoming pipe is branched into two pipelines, one pipeline is connected with the outgoing pipe through a three-way cock and one centrifugal pump while the other pipeline is connected with the outgoing pipe through the other centrifugal pump and the other three-way cock, and the three-way cocks are in up-down communication through a middle communicating pipe. Free switching of series connection and parallel connection is realized through reasonable and simple pipeline designing and the three-way cocks, so that press-filtering efficiency is improved greatly; compared with conventional series-parallel connection pipeline valve switching devices, the double-centrifugal-pump device has the advantages of simple structure, simple operation, less proneness to errors, low cost and high practicability.
Description
Technical field
The present invention relates to a kind of two centrifugal pump device, specifically refer to two centrifugal pump devices that series and parallel freely switches.
Background technique
Centrifugal pump due to structure simple and durable, use reliable, efficiency is high, flow is large and cost is low, apply the most general Liquid transfer dynamic power machine, come from centrifugal pump working principle, thus corresponding characteristic curve of centrifugal pump is also had, the calibrating parameters of centrifugal pump is exactly that centrifugal pump is in most effective corresponding flow and lift parameter, in actual use, it is too much that centrifugal pump running parameter does not depart from calibrating parameters, is rational operation interval.
In large-scale press filtration field, general is all first-selected plate and frame type filter-press, and select centrifugal pump as filter pressing pump, pressure-filtering process obtains filtrate, filter residue progressively runs up to optimal filling degree in pressure filter simultaneously, carry out respective handling again, finally complete the cycling process of filter residue cleaning, the object of press filtration realizes solid-liquid separation exactly.In the starting stage of press filtration operation, owing to being complete empty in pressure filter, concerning filter pressing pump, the quick large discharge input carrying out less lift is the ideal operation state of now press filtration operation; But increase along with filter cake accumulates rear resistance in pressure filter, when particularly stopping close to press filtration, have pressure maximum expanded state, therefore, larger lift can be had to be to best requirement by the press filtration performance of pressure filter in press filtration the second half.
But in press filtration operation, existing centrifugal pump all cannot adapt to such process automatically, reaches efficient, high-quality ideal operation state.When general centrifugal pump carries out press filtration operation, be all that the early stage lift of press filtration is lower, but flow is large, makes motor be in overload, especially easily motor damage; To the press filtration middle and later periods, press filtration resistance strengthens rapidly, and the flow quantity of centrifugal pump reduces rapidly, although at this moment motor is operated in the low power state of underloading, efficiency of press filtering is very low; Although filter pressing pump has H-Max output state, because pressing filtering liquid flow is less, the service behaviour of pressure filter cannot be given full play to and increase work efficiency.
Centrifugal pump is made to coordinate pressure filter, press filtration whole process is made all to reach ideal operation state, the optimum performance playing press filtration is difficult to realize, if but look for another way, the free COMM communication of two centrifugal pump series and parallels is adopted to complete press filtration work, make it in press filtration in early days by two centrifugal pump parallel connections, realize fast, low energy consumption, the efficient press filtration of large discharge; In press filtration, two centrifugal pumps are connected by after-stage, obtain high-lift conveying capacity, after meeting, journey press filtration resistance is large, but still applicable flow can be had to embody efficient press filtration and give full play to the feature of pressure filter performance, so free COMM communication of two centrifugal pump series and parallels is adopted to carry out break-through skill bottleneck, reach the ideal operation state of press filtration, there is the actual application value of particular importance.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art exactly, and provide two centrifugal pump devices that a kind of series and parallel freely switches, this apparatus structure is simple, practical.
For overcoming the deficiencies in the prior art, the present invention takes following technological scheme:
Two centrifugal pump devices that a kind of series and parallel freely switches, comprise inlet pipe, two centrifugal pumps and go out pipe, it is characterized in that: inlet pipe branches into two pipelines, a pipeline is connected pipe through three way cock with centrifugal pump, and another pipeline is connected pipe through another centrifugal pump with another three way cock; The upper and lower UNICOM of union in two three way cock warps.
Described inlet pipe connects liquid pool, goes out pipe and connects pressure filter.
This device, by swivel tee cock, can realize freely switching of two centrifugal pump series and parallel structures, after coordinating, press filtration can be made to operate and reach optimum Working with pressure filter.
Compared with prior art, beneficial effect of the present invention is also:
The optimum working performance reaching centrifugal pump needed for press filtration is switched by the series and parallel of centrifugal pump; The free handover operation of series and parallel of two centrifugal pumps is achieved by rationally succinct circuit design and three way cock; Compared with the series and parallel pipeline valve COMM communication of routine, threeway plug valve can greatly reduce the consumption of pipeline and valve, and simplifies the handover operation of series and parallel, avoids the mistake occurred in common pipe valving series and parallel handoff procedure.
Structure of the present invention is simple, and cost is low, practical, has a extensive future.
Accompanying drawing explanation
Fig. 1 is parallel-connection structure schematic diagram of the present invention.
Fig. 2 is cascaded structure schematic diagram of the present invention.
In figure, each label represents:
1, inlet pipe; 2, pipe is gone out; 3, middle union; 4, three way cock; 5, three way cock; 6, centrifugal pump; 7, centrifugal pump; 20, liquid pool.
Embodiment
Now by reference to the accompanying drawings, the present invention is illustrated further.
Two centrifugal pump devices of freely switching of series and parallel as depicted in figs. 1 and 2, comprise inlet pipe 1, two centrifugal pumps 6,7 and go out pipe 2, inlet pipe 1 branches into two pipelines, article one, pipeline is connected pipe 2 through three way cock 4 with centrifugal pump 7, and another pipeline is connected pipe 2 through another centrifugal pump 6 with another three way cock 5; Union about 3 UNICOM in two three way cock 4,5 warps.
Described inlet pipe 1 connects liquid pool 20, goes out pipe 2 and connects pressure filter.
Fig. 1 and Fig. 2 is same device different conditions, and Fig. 1 is centrifugal pump 6,7 parallel connection conveying fluid, and the first branch road of inlet pipe 1 is for connecting centrifugal pump 6, and centrifugal pump 6 goes out the lower end of pipe union three way cock 5, is merged into out pipe 2 from upper end; Second branch road of intake pipe 1 is enter centrifugal pump 7 after union three way cock 4, and export through pressurization, be incorporated in out pipe 2, realize two branch road two parallel pumps, carry out large discharge output, middle union 3 is blocking state.
After two three way cocks are operated as shown in Figure 2, first branch road of inlet pipe 1 is for connecting centrifugal pump 6, centrifugal lower end of pumping pipe union three way cock 5, importing three way cock 4 upper end is exported by middle union 3 from right-hand member, go out to enter centrifugal pump 7 from three way cock 4 right-hand member, realize double pump series connection, the liquid carrying out lift superposition exports.Three way cock 4 left end forms blocking-up to inlet pipe 1, and three way cock 5 upper end realizes blocking isolation to going out pipe 2.
Manipulate two three way cock combinations, the series and parallel that can realize two centrifugal pumps freely switches, and the system making it to form more rationally can adapt to the efficient press filtration operation of large centrifugal pump.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (2)
1. two centrifugal pump devices of freely switching of a series and parallel, comprise inlet pipe, two centrifugal pumps and go out pipe, it is characterized in that: inlet pipe branches into two pipelines, article one, pipeline is connected pipe through three way cock with centrifugal pump, and another pipeline is connected pipe through another centrifugal pump with another three way cock; The upper and lower UNICOM of union in two three way cock warps.
2. two centrifugal pump devices of freely switching of series and parallel according to claim 1, is characterized in that: described inlet pipe connects liquid pool, go out pipe and connect pressure filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374901.1A CN104895803A (en) | 2015-07-01 | 2015-07-01 | Double-centrifugal-pump device free in switching series connection and parallel connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374901.1A CN104895803A (en) | 2015-07-01 | 2015-07-01 | Double-centrifugal-pump device free in switching series connection and parallel connection |
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| Publication Number | Publication Date |
|---|---|
| CN104895803A true CN104895803A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510374901.1A Pending CN104895803A (en) | 2015-07-01 | 2015-07-01 | Double-centrifugal-pump device free in switching series connection and parallel connection |
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| CN (1) | CN104895803A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109673196A (en) * | 2019-02-13 | 2019-04-26 | 内蒙古云农实业有限公司 | A kind of desert green administering method with husky sand control |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1374747A (en) * | 1918-06-03 | 1921-04-12 | Kuroishi Ichiji | Changeable centrifugal pump |
| JPS4977201A (en) * | 1972-11-27 | 1974-07-25 | ||
| CN87213415U (en) * | 1987-09-17 | 1988-08-10 | 空军油料研究所 | Series/parallel self-priming type centrifugal pump |
| CN2328815Y (en) * | 1998-02-20 | 1999-07-14 | 公安部上海消防科学研究所 | Double stage parallel fire fighting pump |
| CN102177835A (en) * | 2011-04-14 | 2011-09-14 | 四川省农业机械研究设计院 | Electric power pumping irrigation station |
| CN103899542A (en) * | 2014-04-15 | 2014-07-02 | 合肥华升泵阀有限责任公司 | Series-parallel connection centrifugal pump |
| CN204716558U (en) * | 2015-07-01 | 2015-10-21 | 吉首大学 | Two centrifugal pump devices that series and parallel freely switches |
-
2015
- 2015-07-01 CN CN201510374901.1A patent/CN104895803A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1374747A (en) * | 1918-06-03 | 1921-04-12 | Kuroishi Ichiji | Changeable centrifugal pump |
| JPS4977201A (en) * | 1972-11-27 | 1974-07-25 | ||
| CN87213415U (en) * | 1987-09-17 | 1988-08-10 | 空军油料研究所 | Series/parallel self-priming type centrifugal pump |
| CN2328815Y (en) * | 1998-02-20 | 1999-07-14 | 公安部上海消防科学研究所 | Double stage parallel fire fighting pump |
| CN102177835A (en) * | 2011-04-14 | 2011-09-14 | 四川省农业机械研究设计院 | Electric power pumping irrigation station |
| CN103899542A (en) * | 2014-04-15 | 2014-07-02 | 合肥华升泵阀有限责任公司 | Series-parallel connection centrifugal pump |
| CN204716558U (en) * | 2015-07-01 | 2015-10-21 | 吉首大学 | Two centrifugal pump devices that series and parallel freely switches |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109673196A (en) * | 2019-02-13 | 2019-04-26 | 内蒙古云农实业有限公司 | A kind of desert green administering method with husky sand control |
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Application publication date: 20150909 |
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