CN201579041U - Energy-saving quick-melt urea melting tank - Google Patents

Abstract

Disclosed is an energy-saving quick-melt urea melting tank capable of saving cost and energy and fast melting urea. Internal and external circulation is formed in a tank body under interaction of a mixed stirring paddle and a draft tube, the mixed stirring paddle consists of inclined blades with inclinations on the upper layer and a three-blade impeller on the lower layer, the draft tube is arranged on the impeller on the lower layer, solid urea can not suspend on urine surface but immerge in urine, and can be melted quickly under heating action of a heating coil between a heating steam pipe and a return condensate pipe, thereby meeting requirements of different production formulas upon urine without adding water, avoiding generating biuret or over swelling due to local high temperature, and preventing granulated particles from being flat or irregular due to over high water content. An evacuation pipe and a discharge valve are arranged at the opening of the circular-arc bottom of the tank body, an overflow pipe is arranged at the opening of the upper middle portion thereof, a steam purging unit is arranged on the overflow pipe, the evacuation pipe and the overflow pipe are converged into a cocurrent pipe, due to enough drop height from the evacuation pipe and the overflow pipe to a urine spray outlet, enough pressure can be provided to a nozzle to eject urine, and then a submerged pump is saved. When in long-term stop, the discharge valve at the bottom of the urea melting tank can be opened, urine in the tank can be used up according to a normal power-on state, thereby avoiding waste urine, reducing investment and maintenance cost. In addition, urine can not be solidified to block the overflow pipe which is purged by aid of the steam purging unit.

Description

Energy-conservation fast molten urea melting groove

Affiliated technical field

The utility model relates to a kind of energy-conservation fast molten urea melting groove, especially the quick fusing of urea can be merged the energy-conservation soon molten urea melting groove of output urine through cell body bottom emptying pipe and top overflow pipe.

Background technology

At present; in the prior art; the version of urea melting device mostly is heat(ing) coil and flat oblique leaf paddle is installed in the vertical tank; fusion tank divides major trough and secondary groove; the major trough urine enters secondary groove by filter screen and major and minor groove all has steam(-)coil, and molten urea solution is to squeeze into comminutor by the submerged pump in the secondary groove to carry out granulation.The major defect that this equipment exists is: 1) urea fusion groove paddle is flat oblique leaf, stirring intensity is little, solid urea easily is suspended in the surface, can't melt, only adding just fusing under the situation of water, because urea has suitable long residence time in the groove greater than 100 degree high temperature, and generates a large amount of biurets rapidly; Urea can hydrolysis generate carbon dioxide and ammonia under the effect of water simultaneously, a large amount of ammonia of overflowing, the ammonia of overflowing on the one hand can cause the nitrogen nutrient loss, contaminated environment and emit groove easily, the ammonia of overflowing on the other hand makes that the vapour pressure of ammonia descends in the urine and helps the generation of biuret, add water in addition in the urine and can cause moisture content of finished products content height, the flat not rounding of granulated pellet.2) molten urea solution is squeezed into comminutor by the submerged pump in the secondary groove, and the steam insulation pipe can't be installed by the pumping hole place, the easy herein frozen plug of urine, and valve mostly is thermal insulation valve in the urine pipeline, and maintenance cost is higher; 3) the vertical submerged pump urine in the secondary groove of emptying fully even clean also difficulty in the emptying urine groove, easily causes waste, and the bigger running cost height of safeguarding of this equipment investment also need be equipped with the metering computer system of control urine flow.

Summary of the invention

Urea melts output fast under the situation that does not add water and the reduction running cost does not cause waste in order to solve, and the utility model provides a kind of energy-conservation urea melting groove that melts soon.The cell body bottom is circular-arc, the inner stirrer paddle of cell body is that oblique leaf formula and lower floor with angle is the hybrid paddle that three impellers are formed via the upper strata, lower floor impeller place is equipped with guide shell, outer circulation in urine forms under hybrid paddle and guide shell effect, solid urea can not be suspended in the urine surface after adding, and in the urine of can submerging very soon, under the heat(ing) coil heat effect between heating steam pipe and the reflux condensation mode water pipe, accelerated burn-off rate, and urine flows in cell body and also accelerates, steam(-)coil can fully be heated urine, need not add water and just can satisfy the demand of different factory formulas urine, the not danger that can cause localized hyperthermia to cause the generation of biuret and emit groove, the solid urea that drops into and the urine of ejection are complete equivalent, can be because of the moisture height, the flat not rounding of granulated pellet phenomenon.Guarantee that the urine temperature is controlled at the generation that has prevented biuret within 120 ~ 130 degree; Cell body circular arc bottom opening is equipped with emptying pipe and baiting valve; the middle and upper part has overfall and overflow pipe is housed and filter screen; emptying pipe and overflow pipe urine flow through and flow pipe and enter comminutor by nozzle; because of emptying pipe and overflow pipe have enough drop height apart from urine whitewashing outlet; guarantee that nozzle has enough pressure ejection urines; save the urine pump; thermal insulation valve; computer feed proportioning system and flowmeter; shut down the time spent for a long time and can not open cell body bottom baiting valve; use up urine in the cell body according to the normal boot-strap situation; do not cause collection to stay the urine waste; and small investment, maintenance cost is low.

The technical scheme that its technical problem that solves the utility model adopts is: the energy-conservation urea melting groove cell body top of melting soon is provided with charging aperture and driving motor.The driving motor shaft is connected with hybrid paddle; hybrid paddle blade is that oblique leaf formula and lower floor with angle is that three impellers are formed via the upper strata; lower floor impeller place is equipped with guide shell; outer circulation in urine forms under the hybrid paddle of quick rotation and guide shell effect; be provided with heat(ing) coil between cell body middle and upper part heating steam pipe and the middle and lower part reflux condensation mode water pipe and give the urine that flows heating; cell body circular arc bottom opening is equipped with emptying pipe and baiting valve; top has overfall and overflow pipe is housed and filter screen; emptying pipe and overflow pipe urine are confluxed into and are flowed pipe and enter comminutor by nozzle; because of emptying pipe and overflow pipe have enough drop height apart from urine whitewashing outlet, guarantee that nozzle has enough pressure ejection urines.The place is provided with steam blowing at overfall, shuts down at every turn and when starting shooting, with steam blowing urine overflow pipe, has prevented frozen plug.

The beneficial effects of the utility model are: outer circulation in urine forms under hybrid paddle and guide shell effect, solid urea can not be suspended in the urine surface after adding, and in the urine of can submerging very soon, accelerated burn-off rate, and urine flows in groove and also accelerates, steam(-)coil can fully be heated urine, need not add water and just can satisfy the demand of different factory formulas urine, the not danger that can cause localized hyperthermia to cause the generation of biuret and emit groove, and can be because of the moisture height, the flat not rounding of granulated pellet phenomenon.Because of emptying pipe and overflow pipe have enough drop height apart from urine whitewashing outlet, guarantee that nozzle has enough pressure ejection urines, saves submerged pump.Shut down not the time spent for a long time and can open the bottom land baiting valve, use up urine in the groove, do not cause collection to stay the urine waste according to the normal boot-strap situation, and small investment, maintenance cost is low, with steam blowing urine overflow pipe, has prevented frozen plug.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a diagrammatic sketch of the present utility model.

Among the figure: 1. charging aperture, 2. heating steam pipe, 3. heat(ing) coil, 4. condensate pipe, 5. cell body, 6. emptying pipe, 7. baiting valve, 8. hybrid paddle, 9. guide shell, 10. and the stream pipe, 11. steam blowings, 12. overflow pipes, 13. driving motors.

The specific embodiment

As shown in Figure 1: energy-conservation urea melting groove cell body (5) top of melting soon is provided with charging aperture (1) and driving motor (13).Driving motor (13) shaft is connected with hybrid paddle (8); hybrid stirrer paddle (8) is that oblique leaf formula and lower floor with angle is that three impellers are formed via the upper strata; lower floor impeller place is equipped with guide shell (9); outer circulation in urine forms under hybrid paddle (8) that rotates and guide shell (9) effect; be provided with heat(ing) coil (3) between cell body (5) middle and upper part heating steam pipe (2) and the middle and lower part reflux condensation mode water pipe (4) and give the urine that flows heating; cell body (5) circular arc bottom opening is equipped with emptying pipe (6) and baiting valve (7); top is opened overfall and is equipped with and establishes filter screen in the overflow pipe (12) and just be provided with steam blowing (11), and emptying pipe (6) confluxes into and flows pipe (10) with the urine of overflow pipe (12) and enters comminutor by nozzle.

Claims (1)

1. energy-conservation urea melting groove that melts soon, by cell body (5), driving motor (13), hybrid paddle (8), guide shell (9), heating steam pipe (2), condensate pipe (4), heat(ing) coil (3), emptying pipe (6), overflow pipe (12), baiting valve (7), steam blowing (11) and and stream pipe (10) form, cell body (5) top driving motor (13) shaft is connected with hybrid paddle (8), hybrid stirrer paddle (8) is that oblique leaf formula and lower floor with angle is that three impellers are formed via the upper strata, lower floor impeller place is equipped with guide shell (9), be provided with heat(ing) coil (3) between cell body (5) middle and upper part heating steam pipe (2) and the middle and lower part reflux condensation mode water pipe (4), cell body (5) circular arc bottom opening is equipped with emptying pipe (6) and baiting valve (7), the middle and upper part opening is equipped with overflow pipe (12), locate to be provided with steam blowing (11) at overflow pipe (12), emptying pipe (6) confluxes into overflow pipe (12) and flows pipe (10), it is characterized in that: hybrid stirrer paddle (8) is that oblique leaf formula and lower floor with angle is that three impellers are formed via the upper strata in the cell body (5), lower floor impeller place is equipped with guide shell (9), cell body (5) circular arc bottom opening is equipped with emptying pipe (6) and baiting valve (7), the middle and upper part opening is equipped with overflow pipe (12), locates to be provided with steam blowing (11) at overflow pipe (12).

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