CN2179776Y

CN2179776Y - Three-effect evaporator with rotary film

Info

Publication number: CN2179776Y
Application number: CN 93229974
Authority: CN
Inventors: 何晓东
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-21
Filing date: 1993-12-21
Publication date: 1994-10-19
Anticipated expiration: 2003-12-21

Abstract

The utility model relates to a three-effect evaporator with a rotary film for the vacuum negative-pressure concentration of liquid. The utility model is composed of a casing, a nozzle, an evaporating tray, a hydrojet nozzle, a heat exchanger, a vapor liquid separator, liquid distributing devices, a chain wheel, a motor reducer, a clutch, a screw material discharging apparatus, a hollow shaft, a stationary shaft, mechanical seal and a bearing. The evaporating tray is installed on the casing, and the hollow shaft is penetrated through the evaporating tray. Both ends are provided with bearings, and the raised portion of the evaporating tray is provided with the nozzle. A liquid inlet pipe and the hydrojet nozzle are arranged between the two evaporating trays, and liquid distributing devices are evenly distributed on the stationary shaft. The big chain wheel is arranged on the hollow shaft, and the motor reducer is fixed on a bracket. The utility model has the advantages of small ground occupation, energy saving, low cost and high efficiency.

Description

Three-effect evaporator with rotary film

The utility model relates to and a kind of liquid is carried out the rotatable evaporimeter of cryogenic vacuum negative pressure concentration and evaporation dish.

At present, the employed concentration evaporators of industry such as China's pharmacy, chemical industry, food, dairy products, fruit juice, its agent structure is separate assembling, this cover unit floor space is big, each vaporization chamber all will have independent heater and evaporimeter, and pipeline is also more numerous and diverse, increases the precious metal consumption, cost is very high, the steam utilization rate is low, and it is inhomogeneous to be heated, and wastes energy, production efficiency is low, and output and quality is difficult for guaranteeing.In addition, existing its liquid of evaporimeter is evaporated to static state and soaks tubular type, and tube wall is easily glued by Jiao, makes it to reduce evaporation rate.

The purpose of this utility model is exactly that a kind of manufacturing process is simple, floor space is little in order to provide, and is heated evenly non-foamingly, and repeated multiple times is utilized steam, energy savings, and cost is lower, and the production efficiency height can guarantee the triple effect rotary film evaporator of product quality.

The purpose of this utility model is achieved in that whole device is by casing, the valve nozzle, evaporating pan, suction hose, feed tube, hydrojet is chewed, heat exchanger, gas-liquid separator, flange, pipeline, liquid distributor, sprocket wheel, chain, motor reducer, clutch, discharging is chewed, spiral discharging device, supporting leg, quill shaft, fixed axis, vavuum pump, mechanical seal, bearing, bearing cap is formed, four outrigger support casings, in casing, install following two groups of round rotatable evaporating pans, quill shaft passes in the middle of the evaporating pan, bearing is equipped with at two ends, be fixed on the casing two sides with bearing cap, on the flange of air inlet pipe and blast pipe, mechanical seal is installed, adorn the steam nozzle in the lug boss of evaporating pan respectively and be fixed on the air inlet pipe, the air inlet pipe bottom is welded squirrel-tail section respectively, water discharging valve is equipped with in the suction hose outlet, between two evaporating pans, respectively feed tube is housed and hydrojet is chewed, the uniform plate liquid distributor that is installed on the fixed axis, the fixed axis two ends are separately fixed at the casing both sides, two groups of quill shaft left ends are fixing hinge wheel respectively, motor reducer is fixed on the support, fix a middle sprocket on the motor reducer output shaft, spiral discharging device is fixed on the casing bottom, left end is fixing minor sprocket and clutch is installed respectively, chain is with hinge wheel, middle sprocket, minor sprocket connects together, spiral discharging device right-hand member fixedly discharging is chewed, the heat exchanger upper right side is installed vavuum pump, at casing top vapour liquid separator, upper end mounting flange.Main points of the present utility model are its structural shape and operation principle.Its operation principle and method of operating: open steam valve, steam enters in the evaporating pan, by the nozzle ejection,, open motor reducer with evaporation pan, drive middle sprocket, hinge wheel rotation, quill shaft drive the evaporating pan rotation thereupon, open liquid flowing valve, liquid enters feed tube through heat exchanger, and chew the outer surface that sprays to evaporating pan through hydrojet, because the evaporating pan rotation is heated evaporation so liquid is coated on the evaporating pan A point equably, when evaporating pan rotates to the B point, liquid is scraped by the scraper plate liquid distributor, and flows to A ' point along liquid distributor, is coated in the outer surface of next group evaporating pan again uniformly, carry out the concentration and evaporation second time, when evaporating pan rotates at B ', scraped by the scraper plate liquid distributor, drop in the half slot of spiral discharging device, with the clutch closure, the liquid that concentrates is discharged through discharging opening.After the steam of steam jet ejection carried out heat exchange with the liquid outside the evaporating pan, self was condensed, and becomes condensate water, because the interior bottom of steam dish.At this moment open vacuum system.And Open valve, suction hose is just with the condensate water sucking-off, and import pipeline, concentrated liquid is subjected to the indirect steam that produces after the thermal evaporation, through the silk screen separator, discharge by outlet, and in pipeline enters next group evaporating pan, spray by jet pipe, the outer surface of evaporation pan, so that continue next group of evaporation through the concentrated liquid that the scraper plate liquid distributor flows down, become condensate water after its heat exchange by the suction hose sucking-off, enter heat exchanger, three steam that this group evaporating pan is produced by the liquid of indirect steam heating evaporation, compile with last one group indirect steam that produces, together discharge from outlet, that goes round and begins again carries out working cycles.Moving ahead of secondary steam, the work of suction hose is to lean on the vacuum system of the heat exchanger other end to realize, all be negative pressure state in the evaporating pan in the casing, the inspiratory capacity of vacuum system is greater than the inlet and the evaporation of liquid amount of steam, be negative pressure in the next stage evaporating pan, secondary steam is sprayed from jet pipe easily, because condensate water in the effect of vacuum system, evaporating pan and the residue vapor of not condensing, completely be sucked in the heat exchanger, with the heat of this part, the solution to be concentrated body through heat exchanger is given in exchange, to improve preheat temperature, evaporation and concentration is carried out sooner, just make full use of waste heat.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

With reference to accompanying drawing, four supporting legs 18 support casing 14 with casing 14 welding, in casing 14, install the rotatable evaporating pan 4 of following two groups of garden types, evaporating pan 4 and quill shaft 26 stationary fits assembling, bearing 30 is installed at quill shaft 26 two ends, and be fixed in casing 14 both sides with bearing cap 31 and bolt 32, with flange 6 connecting portions mechanical seal 7 is installed in air inlet pipe 16 and blast pipe 25, adorn nozzle 5 respectively in evaporating pan 4 lug bosses, and communicate with air inlet pipe weldering and to weld together, air inlet pipe 16 bottoms are welded the suction hose 9 that communicates with it respectively, the valve 3 that is used for draining is equipped with in suction hose 9 outlets, between two evaporating pans 4, feed tube 8 is housed respectively and hydrojet chews 12, uniform installation scraper plate liquid distributor 24 on the fixed axis 13, fixed axis 13 two ends are separately fixed at casing 14 both sides, two groups of quill shaft 26 left ends are fixing hinge wheel 27 respectively, motor reducer 22 is fixed on the support 21, fix a middle sprocket 23 on motor reducer 22 output shafts, spiral discharging device 15 is fixed on casing 14 bottoms, clutch 19 is housed on the left end shaft, axle head installs and fixes minor sprocket 20, chain 28 is with hinge wheel 27, middle sprocket 23 and minor sprocket 20 are connected on the line, spiral discharging device 15 right-hand members fixedly discharging chew 17, and heat exchanger 11 upper right sides are installed vavuum pump 10, at casing 14 top vapour liquid separators 2, upper end mounting flange 1, flange 1 and pipeline 29 welding.

Three-effect evaporator with rotary film has compared with prior art that floor space is little, and disengagement area is big, the production efficiency height, cost is lower, adopts film rotary evaporation technology, and no static pressure boiling point rises, be heated evenly non-foaming, noncoking, the time is short, not overheated, adopt negative pressure evaporation, boiling point is low, speed is fast, and steam can repeatedly be recycled, energy savings, evaporite ratio is big, and the utilization rate of waste heat advantages of higher will be widely used in the liquid concentration evaporation industry.

Claims

1, a kind of triple effect rotary film evaporator, by casing, the valve nozzle, evaporating pan, suction hose, feed tube, hydrojet is chewed, heat exchanger, gas-liquid separator, flange, pipeline, liquid distributor, sprocket wheel, chain, motor reducer, clutch, discharging is chewed, spiral discharging device, supporting leg, quill shaft, fixed axis, vavuum pump, mechanical seal, bearing, bearing cap is formed, it is characterized in that: four outrigger support casings, in casing, install following two groups of round rotatable evaporating pans, quill shaft passes in the middle of the evaporating pan, bearing is equipped with at two ends, be fixed on the casing two sides with bearing cap, on the flange of air inlet pipe and blast pipe, mechanical seal is installed, adorn the steam nozzle in the lug boss of evaporating pan respectively and be fixed on the air inlet pipe, the air inlet pipe bottom is welded squirrel-tail section respectively, water discharging valve is equipped with in suction and this outlet, between two evaporating pans, respectively feed tube is housed and hydrojet is chewed, the uniform plate liquid distributor that is installed on the fixed axis, the fixed axis two ends are separately fixed at the casing both sides, two groups of quill shaft left ends are fixing hinge wheel respectively, motor reducer is fixed on the support, fix a middle sprocket on the motor reducer output shaft, spiral discharging device is fixed on the casing bottom, left end is fixing minor sprocket and clutch is installed respectively, chain is with hinge wheel, middle sprocket, minor sprocket connects together, spiral discharging device right-hand member fixedly discharging is chewed, the heat exchanger upper right side is installed vavuum pump, at casing top vapour liquid separator, upper end mounting flange.