CN2147044Y

CN2147044Y - Water sealing cyclone

Info

Publication number: CN2147044Y
Application number: CN 93204981
Authority: CN
Inventors: 熊广爱
Original assignee: KUNMING METALLURG I
Current assignee: KUNMING METALLURG I
Priority date: 1993-02-27
Filing date: 1993-02-27
Publication date: 1993-11-24
Anticipated expiration: 2003-02-27

Abstract

The utility model relates to a new style cyclone which is used to separate heavy minerals of fine particles from solid liquid slurry. The water sealing cyclone is formed by that a sand setting mouth (5) is connected with a piece of conduit pipe (6) of a certain length, the sand setting mouth (5) and the conduit pipe (6) are arranged in a water sealing case (4) of a certain pressure, and the caliber of the sand setting mouth (5) enlarges to an extent, that is bigger or equals to the caliber of a material feeding pipe (9). As for the cyclone, three phase of gas, liquor and solid is changed to two phase of solid and liquor, so the harmful effect of air column is eliminated, and the serious problem of the blockage and the wear of the sand setting mouth is solved. In addition, the phenomenon that the setting sand holds fine sand and rough sand runs with flow is completely solved.

Description

Water sealing cyclone

The utility model relates to a kind of cyclone that separates fine-grained heavy minerals from the solid-liquid mixed slurry, especially a kind of water seal cyclone.

Hydrocyclone is widely used in classification, desliming, the concentrated operation of departments such as mining and metallurgy, chemical industry, oil, food, papermaking and building materials.For a long time, when using small-bore hydrocyclone (φ 75m/m and φ 50m/m) to remove-19 μ and-10 μ fine particle stage materials, when feeding mouth is of a size of φ 13m/m and φ 9m/m, its sand setting is chewed diameter little (being respectively φ 7m/m and φ 50m/m), frequent blockage phenomenon in the production causes producing and can not normally stably carry out; The wearing and tearing that the while sand setting is chewed are quite serious; Sand setting presss from both sides fine sand besides, coarse sand is run in overflow, classification efficiency is not high, in order to address these problems, domestic and international project technical staff has carried out extensive work, structure as cyclone, add high-pressure wash water, adopt high-abrasive material, the automatic adjustment that sand setting is chewed, sand setting is chewed self-timing and (is seen DRP DE2355229 with logical grade of cleansing pin, DE1442375, U.S. Pat 3642132, U.S. Pat 4174275, Europe patent EP8206), but because cyclone is all at gas, liquid, Gu work under the three-phase stream mode, and the brainstrust of research cyclone thinks that also having of gas phase benefits the desliming classification, and therefore the problem of aforementioned existence all is not resolved.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of water seal cyclone is provided, it can change the gas, liquid, solid three-phase stream in the cyclone into liquid, fixed double phase flow field, eliminate the adverse effect of air column, avoid obstruction that sand setting chews, reduce wear, improve classification efficiency and grain-level recovery.

The present inventor thinks that the existence of gas phase is harmful to graded desliming.

The purpose of this utility model can reach by following measure: the sand setting mouth of cyclone is sealed in the flashback tank that certain pressure arranged, and the bore of sand setting mouth is not less than the feeding pipe bore, and is connected to the conduit of a certain-length on it.

Can be at the sand setting mouth of sealing assembling simultaneously more than two on the same flashback tank.

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the structure cutaway view according to the water seal cyclone that the utility model proposes.

Fig. 2 is that several sand setting mouths are contained in the topology view in the same flashback tank.

The duty of water seal cyclone is: the slurry of desliming to be fractionated is formulated into the heavy admittedly concentration of 3-10%, earlier will fill with water in the water tank (4), sand setting mouth (5) and the conduit (6) of going up certain-length thereof are packed in the case, then with slurry in specified pressure (as 1.5-1.7Kg/cm ²) under send into cyclone cylindrical shell (2) by feeding pipe (9).Slurry is the combined vortex motion in cyclone, formation solid, liquid two-phase stream, fine fraction (as-10 μ or 19 μ) material is outside overflow pipe (1) displacer, coarse fraction (as+10 μ or+19 μ) then sedimentation downwards slowly of material, chew (5) by cone (3) and sand setting and flow in the flashback tank (4) flashback tank pressure 0.01Kg/cm through conduit (6) ², can predict by Pressure gauge (10).Open ore discharge gate valve (7), sand setting is then discharged by the sand setting discharge pipe, and control ore discharge gate valve keeps flashback tank pressure 0.01Kg/cm ², outside the smooth displacer of sand setting and overflow, the graded desliming operation is also satisfactorily finished, and flashback tank (4) is contained on the support (8).

Several sand setting mouths (5) of sealing assembling simultaneously come from different backgrounds and possess different abilities and assemble the water seal cyclone on same flashback tank.According to liquid continuity, incompressible and Archimedes' principle, in same flashback tank, the effect that each sand setting is chewed suffered water seal pressure equates that the sand setting flow velocity equates when its basal area equates, when other term harmonization, the sand setting amount that each sand setting is chewed discharge also equates.Install in groups and can increase the sand setting discharge rate and improve sand setting concentration.The stack of the sand setting amount in the flashback tank requires the stack of sand setting discharge pipe basal area.Owing to improved sediment outflow concentration significantly, can avoid preceding the concentrating again of next operation.

Polynary assembling cyclone is applicable in the large-scale industrial production.The duty of polynary package assembly water seal cyclone is:

Under specified pressure (as 1.5-1.7Kg/cm ²) slurry is sent into cyclone cylindrical shell (2) by pan feeding house steward (11) through tube connector (12), feeding pipe (9), fine fraction is discharged by overflow pipe (1) and is entered return main or groove (13) again outside the displacer.Sand setting (+10 μ or+19 μ) is then chewed (5) by sand setting and is chewed conduit (6) through sand setting and enter flashback tank (4), opens the ore discharge gate valve, sand setting then outside sand setting discharge pipe displacer, control flashback tank pressure 0.01Kg/cm ², outside the smooth displacer of sand setting and overflow, realize classification, desliming and the concentration process of material.

The advantage that the utility model has compared to existing technology:

1, the air column adverse effect has been eliminated in solid-liquid two-phase flow field, and separating rate doubles, wedge shape rotary body control effectiveness of classification; 2, except having high efficiency cone centrifugal force field, owing to be connected to the conduit of certain-length, increased pressure classification field and pressure and concentrated the field, under these three actings in conjunction, make it classification efficiency and obviously improve 30%, the rough and careless more common cyclone of sand setting (underflow) mud containing rate and overflow all descends 50%; 3, sand setting (underflow) is chewed chi greater than material inlet, as long as material inlet does not block, sand setting is chewed and just is difficult for blocking, and has fundamentally solved the sand setting that can not get for a long time solving and has chewed the technical barrier of blocking and wearing and tearing, and normal operation has had Reliable guarantee. 4, cyclone, particularly block structure cyclone treating capacity increase (the 21-42 ton per day. platform), the desliming process is unobstructed stable, sand setting concentration can be brought up to more than 45%.

The utility model is coloured, black, nonmetal, coal slime ore dressing plant classification, desliming, slagging-off, the indispensable equipment of dense slag, be used for concentrating before the operation of chemical products centrifuge dewatering, cocnentration factor up to 5-8 doubly is used for the drilling mud solid controlling, can be under high viscosity (50 seconds) and low pressure

(0.15Mpa) obtain desirable desanding effect, mud meets the API standard, simultaneously, can remove 2 microns clay, except sticking remarkably productive; The equipment that the producer of especially production spraying plating, scraper, air knife, electroceramics, paint, pigment, rubber, plastics etc. filler product is ideal.

Claims

1, water seal cyclone, comprise cone (3) and sand setting mouth (5) that a cylindrical tube (2) that tangential feeding pipe (9) are arranged on it links to each other with the cylindrical shell bottom, one overflow pipe (1) is arranged in the middle of cylindrical shell, the sand setting mouth (5) that it is characterized in that being connected in mutually on the cone (3) is arranged in an airtight flashback tank (4) that certain pressure is arranged, and is connected to a conduit (6) on the sand setting mouth.

2, cyclone according to claim 1 is characterized in that the bore of sand setting mouth is not less than the bore of feeding pipe.

3, cyclone according to claim 1 is characterized in that and can sealing simultaneously assemble two above sand setting mouths (5) and conduit (6) in same airtight water tank (6).