CN2579890Y - Anti-block device for centrifugal sieve seam - Google Patents

Abstract

The utility model relates to an anti-blocking device for a centrifuge sieve seam, which comprises a gate 1 connected with a wind conveying pipeline, a wind pipe 2 and nozzles 3, wherein the wind pipe 2 is controlled by the gate 1 to convey wind or to stop conveying wind. The wind pipe 2 is parallel to the conical surface of a sieve basket 5 of a centrifugal hydroextractor, and a plurality of nozzles 3 are orderly distributed on the wind pipe 2 and are communicated with the wind pipe 2. Outlets of the nozzles point to conical surface buses of the sieve basket 5, and the nozzles 3 are distributed on the wind pipe 2 in an equidistant mode and are vertical to the conical surface buses of the sieve basket 5. The utility model can carry out blowing and cleaning operation by aiming at the conical surface buses of the whole sieve basket, thereby, the phenomenon that a sieve seam is blocked can be effectively prevented. The continuous work of a centrifuge is realized, and the normal production is always kept.

Description

A kind of whizzer sieve seam antiplugging apparatus

Technical field

The utility model relates to a kind of whizzer sieve seam antiplugging apparatus, particularly a kind of blower system that prevents that coal slime whizzer sieve seam from stopping up.

Technical background

Coal slime dewatering is one of technical barrier of domestic and international wet method coal washing processing always, moisture effects to commercial coal is very big, not only influence commercial coal sale, increase idle transportation, reduce the economic benefit of coal enterprise, also influence user's use and economic benefit.Coal slime dewatering is the operation that investment is big, energy consumption is high, working cost is high in coal separating plant, but is that institute of modernized coal separating plant is indispensable.At present both at home and abroad coal slime dewatering is generally adopted vacuum filtration, press filtration, centrifugal settling or centrifugal settling to filter to combine and the method for pressure filtration.

Vacuum filtration product moisture height can reach 27-28%, and processing power is low, energy consumption is big, utility appliance is many, floor space is big, working cost is high; Press filtration can only service intermittent, also has the shortcoming that processing power is low, energy consumption is high, expense is high; Pressure filtration and the domestic barrier film plate-and-frame filter press of development recently (handling floating smart) product moisture about 20% is not broken away from intermittently used press filtration feature and defective yet; It is one of effective ways to the fine coal slurry dehydration that centrifugal settling and centrifugal settling are filtered, external application is success and extensive relatively, domestic but apply bad, though its product moisture is very low, work continuously, processing power is bigger, but maintenance difficult, filter liquor concentration height, operation and maintenance cost height, thereby limited application in coal separating plant.

The coal slime whizzer belongs to the filtering type centrifuge dehydration.This equipment dependability processing power of soaring is big, and it is heavy by about 17% that product moisture reaches, and holds back granularity and reach 0.125mm.Theoretical show with experiment, coal slime hold back that granularity depends on the basket slit and to the requirement of product moisture.Sieve seam is more little, hold back product moisture of few more snow while of granularity will increase, and the characteristic of coal slime is also to holding back granularity and product moisture has certain influence in addition.As shown in Figure 2, whizzer vertical bar basket sieve gap is a set(ting)value, the whizzer filtering layer is subjected to the extruding porphyrization of spiral scraper, there is particle just in time to be stuck in the sieve seam frequently because of extruding, still can not throw away the sieve seam by centrifugal force, along with this situation increases, the particle card many, cause the basket useful area constantly to reduce, the coal slime viscosity of adding is strong, the argillization phenomenon is serious, puts up a bridge easily to harden, stop up a lot of sieve seams between particle, and this is totally unfavorable to coal slime whizzer works better, to cause product moisture to increase, even can't work continuously.There is similar problem to water and solid miscellany in other too with the device that whizzer dewaters in industrial production.

Summary of the invention

The utility model is just at this difficult problem, provides a kind of centrifuge to prevent to sieve the high pressure air blowing device that seam stops up, and can work continuously to guarantee whizzer, and its product moisture, treatment capacity all obtains the technetium good result.

This device comprises gate 1, airduct 2 and the nozzle 3 that links to each other with air supply duct, described airduct 2 is by gate 1 control air-supply and blowing-out, this airduct 2 is parallel with basket 5 conical surfaces of centrifuge, and nozzle 3 has a plurality of being distributed in successively on the airduct 2 also to communicate with it, and its outlet is facing to basket 5 cone elements.Described nozzle 3 is equally distributed on the airduct 2, and perpendicular to basket 5 cone elements.

The high-pressure blast that nozzle penetrates is perpendicular to basket sieve seam, and a plurality of nozzles that are equally spaced simultaneously can be at the cleaning of drying of whole basket cone element, thereby can effectively prevent to sieve and sew phenomenon of blocking.

Description of drawings

Fig. 1 is this apparatus structure synoptic diagram;

Fig. 2 is the axial sectional view of this device " V " font nozzle;

Fig. 3 is this device " V " font nozzle left view;

Fig. 4 for this device waist shaped hole nozzle shaft to sectional view;

Fig. 5 is this device waist shaped hole nozzle right view;

Fig. 6 is the specific embodiment synoptic diagram.

Embodiment

With coal slime whizzer sieve seam antiplugging apparatus is example, device comprises gate 1, airduct 2 and the nozzle 3 that links to each other with air supply duct, described airduct 2 is by gate 1 control air-supply and blowing-out, this airduct 2 is parallel with 5 of the baskets of centrifuge, nozzle 3 has a plurality of being distributed in successively on the airduct 2 also to communicate with it, and its outlet is facing to basket 5 cone elements.Described nozzle 3 has a plurality of, is equally distributed on the airduct 2, and perpendicular to basket 5 cone elements.

The high-pressure blast that nozzle 3 penetrates is perpendicular to the sieve seam of basket 5; Nozzle 3 can prevent to stop up to whole draining screen seam blowing cleaning.Whole blowing device maintains static, and basket rotates, thereby has guaranteed effective dehydration area.

Nozzle 3 structures are circle, waist shaped hole or are " V " font, select for use high-abrasive material to make.

According to the variation of serial coal slime whizzer basket specification, structure of nozzle, quantity, blow pressure and airduct air intake pressure, airduct inside nominal diameter have certain matching relationship, can adjust as required.

Adopt this device, the coal slime whizzer is worked continuously, and keep ordinary production always, product moisture is stabilized in about 17%, has created favorable social and economic benefits.

For other similar centrifugal dehumidifier, the utility model adapts to equally.

Claims (5)

1, a kind of whizzer sieve seam antiplugging apparatus, it is characterized in that it comprises gate (1), airduct (2) and the nozzle (3) that links to each other with air supply duct, described airduct (2) is by gate (1) control air-supply and blowing-out, this airduct (2) is parallel with basket (5) conical surface of centrifuge, nozzle (3) has a plurality of, be distributed in successively that airduct (2) is gone up and with communicate, its outlet is facing to basket (5) cone element.

2, a kind of whizzer sieve seam antiplugging apparatus as claimed in claim 1 is characterized in that described nozzle (3) is equally distributed on the airduct (2), and perpendicular to basket (5) cone element.

3, as a kind of whizzer sieve seam antiplugging apparatus of claim 1 or 2, it is characterized in that described nozzle (3) is for circular.

4, as a kind of whizzer sieve seam antiplugging apparatus of claim 1 or 2, it is characterized in that described nozzle (3) is a waist shaped hole.

5, as a kind of whizzer sieve seam antiplugging apparatus of claim 1 or 2, it is characterized in that described nozzle (3) is " V " font.

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