CN204723832U - Basic magnesium carbonate is carried out the device of efficient press filtration - Google Patents

Abstract

The utility model discloses a kind of device basic magnesium carbonate being carried out efficient press filtration, inlet pipe branch is connected pipe once three-way cock with centrifugal pump, and branch two is connected pipe through another centrifugal pump with another three-way cock; Two three-way cocks are equipped with gear driven Spool rotating, be provided with driving gear and drive two three-way cocks to rotate switching simultaneously between the gear of two three-way cocks, the upper and lower UNICOM of union in two three-way cock warps; Inlet pipe connects the basic magnesium carbonate surge tank of back taper polycrystalline substance through valve, is provided with anticlogging feed pipe between the cone end and valve; Go out pipe and connect filter press.The utility model, by rationally succinct circuit design and two three-way cocks, achieves the convenient switching of series and parallel, improves press filtration operating efficiency; Compared with the series and parallel switching device shifter of routine, there is structure simple, simple to operate and not easily make mistakes, practical feature; The cone end and feed pipe effectively can prevent blocking, are conducive to material input.

Description

Basic magnesium carbonate is carried out the device of efficient press filtration

Technical field

The utility model relates to a kind of device basic magnesium carbonate being carried out efficient press filtration.

Background technology

Basic magnesium carbonate is one of most important compound in magnesium industry processed, is widely used as the additive of toothpaste, paint, cosmetics, plastics, rubber etc.Usually, basic magnesium carbonate can be obtained by pyrolysis, and namely pyrolysis magnesium bicarbonate obtains, and its key reaction mechanism is 2Mg (HCO3) 2=Mg2 (OH) 2CO3+3CO2+H2O.

In modern industry, the main method of pyrolysis magnesium bicarbonate solution and pyrolysis heavy magnesium water that adopts produces basic magnesium carbonate, need to carry out press filtration after heavy magnesium water pyrolysis completes and could obtain product, the press filtration of basic magnesium carbonate, general is all 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 filter press simultaneously, carry out respective handling again, finally complete the cycling process of filter residue cleaning, the object of press filtration realizes Separation of Solid and Liquid exactly.In the starting stage of press filtration operation, owing to being complete empty in filter press, 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 filter press, when particularly stopping close to press filtration, have maximum pressure expanded state, therefore, larger lift can be had to be to best requirement by the press filtration performance of filter press 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 filter press cannot be given full play to and increase work efficiency.

Therefore, centrifugal pump is made to coordinate filter press, basic magnesium carbonate 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, adopt the convenient switching device shifter of two centrifugal pump series and parallels 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 filter press performance, so convenient switching device shifter of two centrifugal pump series and parallels is adopted to break through the pressure filtering technique bottleneck of basic magnesium carbonate, reach the ideal operation state of press filtration, there is the actual application value of particular importance.

Utility model content

The technical problems to be solved in the utility model overcomes the deficiencies in the prior art exactly, and provide a kind of device basic magnesium carbonate being carried out efficient press filtration, this apparatus structure is simple, practical, can realize the convenient switching of series and parallel of two centrifugal pump device.

For overcoming the deficiencies in the prior art, the utility model takes following technical scheme:

A kind of device basic magnesium carbonate being carried out efficient press filtration, comprise inlet pipe, go out pipe, two centrifugal pumps and basic magnesium carbonate filter press, 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; Two three-way cocks are equipped with gear driven Spool rotating, be provided with driving gear and drive two three-way cocks to rotate switching simultaneously between the gear of two three-way cocks, the upper and lower UNICOM of union in two three-way cock warps; Inlet pipe connects basic magnesium carbonate surge tank through valve, and basic magnesium carbonate surge tank has the polycrystalline substance of back taper, is provided with anticlogging feed pipe between the cone end and valve; Go out pipe and connect basic magnesium carbonate filter press.

This device is rotated by driven by motor driving gear, can single-power gear-linked stroke, accurately fast switches manipulation, the convenient switching realizing two centrifugal pump series and parallel structures, the press filtration of basic magnesium carbonate can be made to operate and reach optimum Working.

Compared with prior art, the beneficial effects of the utility model are also:

The optimum working performance reaching centrifugal pump needed for basic magnesium carbonate press filtration is switched by the series and parallel of centrifugal pump; By rationally succinct circuit design and single-power gear-linked stroke, accurately fast switch manipulation, the ingenious series and parallel handover operation being achieved two centrifugal pumps by two three-way cocks; Compared with the series and parallel pipeline valve switching device shifter 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; Be conducive to charging at the bottom of the cone of back taper, feed pipe effectively can prevent feed blocking, is conducive to the carrying out of press filtration.

The utility model structure 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 utility model.

Fig. 2 is cascaded structure schematic diagram of the present utility model.

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, basic magnesium carbonate surge tank; 21, driving gear; 22, gear; 23, gear; 24, valve; 25, feed pipe; 30, filter press.

Detailed description of the invention

Now by reference to the accompanying drawings, the utility model is illustrated further.

As depicted in figs. 1 and 2 basic magnesium carbonate is carried out the device of efficient press filtration, comprise inlet pipe 1, two centrifugal pumps (6,7), go out pipe 2 and basic magnesium carbonate filter press, 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; Two three-way cocks 4,5 are equipped with gear 22,23 and drive Spool rotating, be provided with driving gear 21 and drive two three-way cocks 4,5 to rotate switching simultaneously between the gear 22,23 of two three-way cocks, union about 3 UNICOM in two three-way cock 4,5 warps; Inlet pipe 1 connects basic magnesium carbonate surge tank 20 through valve 24, and basic magnesium carbonate surge tank 20 has the polycrystalline substance of back taper, is provided with anticlogging feed pipe 25 between the cone end and valve 24; Go out pipe 2 and connect basic magnesium carbonate filter press 30.

Basic magnesium carbonate surge tank 20 temporarily can store the heavy magnesium water after pyrolysis, and valve-off 24 can utilize feed pipe 25 to wash away the cone end, is conducive to basic magnesium carbonate and delivers into filter press 30.

Fig. 1 and Fig. 2 is same device different conditions, wherein driving gear 21 is driven by motor deceleration Stroke Control, drive the gear 22 of union three way cock 4 spool and the gear 23 of union three way cock 5 spool respectively, realize single-power gear-linked, fast switch manipulation.

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 left end of pipe union three way cock 5, is merged into out pipe 2 from right-hand member; Second branch road of water inlet 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, the centrifugal left end pumping pipe union three way cock 5, exported by middle union 3 from upper end and import three-way cock 4 lower end, 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 right-hand member realizes blocking isolation to going out pipe 2.

As described above by single-power gear-linked, carry out stroke fast to switch accurately, manipulate two three-way cock combinations, the convenient switching of series and parallel of two centrifugal pumps can be realized, the system making it to form more rationally can adapt to the efficient press filtration operation of basic magnesium carbonate, meets the requirement of heavy magnesium water pyrolysis industry.

Above-mentioned just preferred embodiment of the present utility model, not does any pro forma restriction to the utility model.Any those of ordinary skill in the art, when not departing from technical solutions of the utility model scope, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solutions of the utility model, according to the utility model technical spirit to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solutions of the utility model protection.

Claims (1)

1. basic magnesium carbonate is carried out the device of efficient press filtration by one kind, comprise inlet pipe, go out pipe, two centrifugal pumps and basic magnesium carbonate filter press, 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; Two three-way cocks are equipped with gear driven Spool rotating, be provided with driving gear and drive two three-way cocks to rotate switching simultaneously between the gear of two three-way cocks, the upper and lower UNICOM of union in two three-way cock warps; Inlet pipe connects basic magnesium carbonate surge tank through valve, and basic magnesium carbonate surge tank has the polycrystalline substance of back taper, is provided with anticlogging feed pipe between the cone end and valve; Go out pipe and connect basic magnesium carbonate filter press.