CN2110512U - Charging machine for thickening salt pulp - Google Patents

Abstract

The utility model relates to a special charging machine for thickening salt pulp used for the production of chemical industry, and is formed by that a conical bottom, an overflowing liquid collecting tank, an overflow weir, a feed port, a feed guiding barrel, a shell, a tooth form axle, a sealing device and a direct connecting speed reducing motor are combined. The charging machine for thickening salt pulp is used in the production of salt producing industry. After thin salt pulp enters the device along the tangential direction of a flow guide barrel, the thin salt pulp can automatically complete thickening, and is transferred to dewatering process with concentration kept uniform. The utility model has the advantages of stable substances charging, stable linking, small energy consumption, easy realization of thickening substances, automatic substances charging and the reduction of production cost.

Description

Charging machine for thickening salt pulp

The design belongs to the isolated plant of solid-liquid phase materials thickening feed in the chemical industry, is specially adapted to the salt slurry thickening of dehydration procedure in the salt industry production, a kind of device of steady and continuous feed.

At present, in the national vacuum salt production industry, the thickening that is used for salt slurry (solid-liquid phase) has two kinds of methods with the dehydration feed.A kind of method is that evaporation and concentration in the crystallizing evaporator is become the volume solid-to-liquid ratio is about 20% salt slurry, by manually being thrown in the low level salt slurry agitator by valve continuous (or interruption), with pump this salt slurry is sent into hydrocyclone then, open degree by Artificial Control hydrocyclone bottom valve realizes that it is about 50% salt slurry that the salt slurry thickens to the volume solid-to-liquid ratio, sends into the dehydration of centrifugal dehydration equipment again.The clear liquid (containing a large amount of crystal salt grains) that screws out from the cyclone top then returns crystallizing evaporator and participates in the material circulation.Reach the salt slurry about 50% and send into centrifuge dewatering equably, often because of producing fluctuation or manually-operated influence, be difficult to realize, thereby also to add an auxiliary equipment, a high-order salt slurry tank diameter (bucket) promptly is set in the hydrocyclone bottom, salt after above-mentioned thickening slurry after stirring, is sent the salt slurry into the centrifugal dehumidifier dehydration by Artificial Control groove (bucket) bottom valve.Another kind method is that to adopt brine pump be volume solid-to-liquid ratio in the crystallizing evaporator that 20% salt slurry directly pumps into the thickening of secondary hydrocyclone, sends into centrifuge dewatering again.With method one difference is to have reduced by a low level salt slurry agitator, and all the other processes are identical entirely.The common drawback that these two kinds of methods exist is that operation is long, needs 2～3 posies; Equipment is many, energy consumption height, two grooves (bucket), a hydrocyclone, two attached motors of agitator; Simultaneously, because of the instability of Artificial Control hydrocyclone and valve, be directed at the dried moist lability of material, the dehydration procedure dehydration equipment is had loose bowels and product rejection is many, and clear liquid is taken away the crystal salt grain, and the loss solid salt makes overall recovery on the low side.Cost is higher; Because of deposition solid salt (containing gypsum) increases, the work load amount that influence is stirred, cleared up is big or the like, is difficult to realize Automation of Manufacturing Process after three or five days in tank diameter (bucket) operation, and device maximizes.

The design's purpose is the technical scheme that proposes a kind of salt slurry thickening batcher, can realize the purpose of automatic thickening, even feeding on an equipment.

The design's design is poor according to salt slurry solid-liquid severe, the salt slurry that crystallizing evaporator is discharged tangentially enters a device along guide shell, material increases gradually with the device section, the feed liquid rate of climb is successively decreased, solid (crystal salt grain) slowly is sunken to the tapering down, clear liquid rises and passes back into the principle of crystallizing evaporator, reaches a kind of material thickener of salt slurry thickening.Simultaneously, for making the crystal salt grain that deposits after the thickening, competent wetting enters next operation dehydration by certain solid-to-liquid ratio equably, and a kind of profile of tooth (or band shape) vermiculator that has of design design can pass through motor-driven horizontal dispenser again.Partly form a whole above-mentioned two with the flange connection, realize the thickening even feeding of salt slurry.

For the solid-to-liquid ratio of regulating the salt slurry after the thickening satisfies the technological requirement of dewater unit, also design is equipped with the saturated brine valve on batcher, can be according to dewatering machine to the requirement of material solid-to-liquid ratio and regulation and control arbitrarily.

The design's device, thickening be partly by conical bottom, overflowing liquid feeder, downflow weir, charging guide shell, material inlet, and the clear liquid discharging mouth is welded.Conical bottom is provided with 2 of visors, is convenient to observe material deposition conditions in the container.Conical bottom is neglected production scale greatly and is decided.Feed is partly by termination gland, housing, toothed shank, sealing device, bearing block, and direct-connected reducing motor, shaft coupling, discharge gate, salt are starched the denseness control valve, the sealing penstock is formed.Whole table apparatus is made the no specific (special) requirements of processing.Material can be carbon steel, stainless steel, corronil etc. and composite plate thereof because of the corrosive nature of thickening material.

First characteristics of the design are with the material thickener, and the device that dispenser combines together is realized the material thickening in an equipment, give material process.Overcome the production process that needs several means to implement in the prior art, simplified production process, saved floor space, reduced 2 of operating posts, production operation workman 2 people easily are automated; Second characteristic are after material passes through dispenser among the design, can guarantee the salt slurry of the finite concentration ratio that centrifugal dehydration equipment needs, and feed equably, make dehydration procedure production stable, overcome in the prior art because of material concentration, the inventory instability causes produces fluctuation greatly, and the problem that the substandard product rate is high can improve product recovery rate 1%.The apparatus cost that the 3rd characteristic are the design is low, and wriggling intensity required drive has been cancelled low level salt slurry agitator of the prior art simultaneously than prior art economize on electricity 75%, high-order salt slurry tank diameter (bucket), and hydrocyclones etc. make overall cost decline.The 4th characteristics are that the design can reduce production costs, and increase the business economic benefit.To produce 150000 tons of vacuum salt production factories per year, effective production time is 300 days, only from cutting personnel, economize on electricity, improve product recovery rate three aspects and calculate, but every year 380000 yuan of the new profits.The 5th characteristics are that the design's device has been cancelled groove, bucket, have solved because of at the bottom of the salt slurry deposit tank problem that labor cleaning's work load is big.

The design's embodiment as shown in drawings, accompanying drawing provides is the structure of salt slurry thickening batcher.Figure one is an overall schematic, and figure two is enlarged drawings of dispenser front view and side view.

To illustrated explanation:

Dispenser " 1 ", thickener conical bottom " 2 ", bearing " 3 ", overflowing liquid feeder " 4 ", downflow weir " 5 ", charging guide shell " 6 ", direct connection reducing motor " 7 ", rolling bearing " 8 ", major axis " 9 ", bearing block " 10 ", sealing device " 11 ", minor axis " 12 ", oiliness bearing " 13 ", gland " 14 ", dispenser housing " 15 ", toothed shank " 16 ", wriggling tooth " 17 ", shaft joint " 18 ", salt slurry charging aperture " A ", clear liquid outlet " B ", thickening salt slurry outlet " C " is regulated salt slurry denseness valve " D; E ", seal lubrication penstock " F; G " sealing water outlet " H ", material visor (M; N "

With reference to the embodiment accompanying drawing the design is described further.

Conical bottom " 2 " is that a metal tapering is 40 ° to 45 ° a hollow taper container.Upper end and overflowing liquid feeder " 4 ", downflow weir " 5 ", charging guide shell " 6 " thickener that is welded successively.Feed pipe " A " is installed the soldering angle requirement with guide shell " 6 ", and feed pipe " A " is 7 ° to 8 ° with the horizontal line angle, is the tangent line welding with guide shell " 6 ".The lower end communicates with dispenser housing " 15 " by the flange connection.Main shaft in the dispenser housing partly is formed by connecting with one heart by minor axis " 12 ", toothed shank " 16 ", major axis " 9 " three.Toothed shank " 16 " is to be welded in and to be constituted wriggling tooth axle on the week by the more piece clavate metal pipe nipple helical pattern that interlaces, also available narrow metal tape connects along increment spiral welding, can wriggle and scrape the salt that bonds on the housing wall by motor " 7 " rotation and starch, make the salt slurry that sinks in the thickener be in the wriggling state and not deposit caking, fouling.The rotating speed of toothed shank is controlled at 15 to 60 rev/mins, makes salt slurry wriggling, and energy consumption is lower, and can not destroy the salt crystalline form.And need to change toothed shank or maintenance tooth, can dismantle bolt from the flange connection place, with the whole taking-up of toothed shank " 16 " repair and replacement.

For avoiding salt slurry feeding-up or pile up caking, design has valve " E ", with saturated clean salt solution, sends into by this valve control and to adjust the ratio that solid-to-liquid ratio reaches to be needed in the dispenser.This clean salt solution can play elutriation (dissolving magnesium salts) salt by the salt slurry simultaneously, improves the function of salt matter.

When rare salt that crystallizing evaporator is discharged is starched (20% left and right sides solid-to-liquid ratio concentration), through feed pipe " A ", after charging guide shell " 6 " tangential screw charging, the solid salt grain sinks, amass in dispenser housing " 15 ", conical bottom " 2 ", motor-driven toothed shank " 16 " is rotated, make the salt slurry wriggling in the housing " 15 ", control valve " E " adds saturated clean salt solution, after making the salt slurry meet the solid-to-liquid ratio of dehydration equipment needs, give dehydration equipment equably with the slurry of the salt after the thickening by outlet " C ".Clear liquid rises along conical bottom " 2 " chamber wall, flows into overflowing liquid feeder " 4 " through downflow weir " 5 ", and continuing is refluxed by clear liquid outlet " B " enters crystallizing evaporator and participate in the material circulation again.

The design considers that motor and the installation of thickening batcher conveniently are provided with screw rod and regulate.Whole device is lifted on the framework with bearing " 3 ".

The design's device is operation operation like this.Close salt slurry drain valve " C ", open saturated salt water valve " E ", after making salt solution be full of housing " 15 ", open sealing penstock " F, G ", start direct connection reducing motor " 7 ", open charging valve " A ", valve " B " again, when treating that visor " M " locates to occur the solid salt deposition, promptly open salt slurry valve " C ", and adjust solid-to-liquid ratio by valve " E ".Whole device enters normal operation.Stop if desired or stop production to overhaul, just stop motor " 7 " after answering the material in this device of emptying, avoid material to deposit and lump.

Claims (6)

1, a kind of special cell equipment salt slurry thickening charging gear that is used for chemical industry production, it is characterized in that by conical bottom, the overflowing liquid feeder, overflowing liquid collection groove, downflow weir, charging aperture and charging guide shell, the thickening batcher that housing, toothed shank, sealing device, discharge gate combine, it is used for the vacuum salt production industrial production by the motor transmission.Rare salt slurry that crystallizing evaporator is discharged is tangential admission along this device feed pipe and guide shell, the crystal salt grain sinks and wriggles through toothed shank, adjust the even feeding of concentration with the joint valve and give dewater unit, clear liquid is by downflow weir feeder refluxed evaporator crystallizer, finishes in a device the even feeding of thickening automatically and gives subsequent processing.

2, according to the described device of claim 1, the material that it is characterized in that device is because of the applicable carbon steel of the corrosivity of material, stainless steel, corronil and composite plate thereof.

3, according to the described device of claim 1, it is characterized in that thickener conical bottom tapering is 40～45 °.

4, according to the described device of claim 1, it is characterized in that feed pipe A and horizontal line angle are 7 ° to 8 °, become tangential welding with guide shell.

5, according to the described device of claim 1, it is characterized in that the turning cylinder of dispenser is made up of for three sections minor axis, toothed shank, major axis, toothed shank is by more piece clavate metallicity, the pipe nipple annular array that interlaces was welded on the week, constituted the wriggling toothed shank.

6,, it is characterized in that the toothed shank rotating speed is in 15～60 rev/mins of scopes according to the described device of claim 5.

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