CN201482582U

CN201482582U - Novel flooding pipe of thick amour swirler

Info

Publication number: CN201482582U
Application number: CN2009201687256U
Authority: CN
Inventors: 黄山
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-05
Filing date: 2009-08-05
Publication date: 2010-05-26
Anticipated expiration: 2019-08-05

Abstract

The utility model discloses a novel flooding pipe of a thick amour swirler, which solves the problems of the common hydraulic swirler that the bottom flowing mouth is blocked, the effusion is thick, and the adaptability to the change of pulp feeding materials is weak. The flooding pipe is characterized in that a cylinder (2) is arranged at the upper part of a pipe body, a cone (4) is arranged at the middle part thereof, a bottom flow section (5) with symmetrical horn mouths up and down is arranged at the lower part thereof, the upper part, the middle part, and the lower part are connected to form a cone horn-mouth cone cylinder swirler, a feeding opening (1) is arranged on the outer side of the cylinder (2), central bottom flow opening adjustable devices (6) are arranged in the horn mouths of the bottom flow section (5), and a flooding pipe (3) with an outside upper cone and an inner lower cone is arranged at the inner top part of the cylinder (2). The novel flooding pipe has the advantages of improving sorting precision of coal grains, lowering the sorting lower limit, playing the function of deregulating pressure, and greatly improving sorting effect of the swirler, and therefore is suitable for application of sorting in accordance with density of coals and other minerals.

Description

The novel overflow pipe of a kind of heavy Jie's cyclone

Affiliated technical field:

The utility model belongs to mining machinery manufacturing technology field, is specifically related to the novel overflow pipe of a kind of heavy Jie's cyclone, is adapted to two products or the three products cyclone overflow pipe that heavily is situated between and uses.

Background technology: defectives such as present heavy medium cyclone exists mainly that the underflow opening size can not onlinely be regulated, lower limit of separation height, air column shape and size are unstable and can not regulate.Can not well satisfy to obtain higher underflow density, the double requirements of lower effluent concentration is arranged again simultaneously.Present heavy medium cyclone overflow pipe structure is not obvious to the separating effect of fine fraction coal.

Summary of the invention:

The purpose of this utility model remedies above deficiency exactly, what provide is a kind of under the condition of identical feed pressure, can effectively reduce lower limit of separation, the raising sharpness of separation of coal, especially to the obvious novel overflow pipe of improved a kind of heavy Jie's cyclone of the separating effect of fine fraction coal (3-0mm).

The utility model is achieved in that the novel overflow pipe of described a kind of heavy Jie's cyclone, and the structure setting mainly is made up of pan feeding section, shell of column, awl section, overflow pipe, underflow section and underflow opening adjusting device six major parts as shown in the figure.The structure setting is that the upper body is provided with a cylinder (2), the stage casing is set to cone (4), the bottom is set to cone horn mouth circular cone tube cyclone of symmetrical horn mouth underflow section (5) composition up and down, cylinder (2) arranged outside has feeding mouth (1), be provided with center bottom head piece tunable arrangement (6) in the horn mouth of underflow section (5), it is characterized in that cylinder (2) inner top is provided with lower cone overflow pipe (3) in the outer upper cone.Operation principle: dense medium suspension liquid mixes the back and feeds the cyclone that heavily is situated between with certain pressure along tangent line with coal, in cyclone, form internal and external screw stream and center air column, and carry out layering by density, along cyclone axially from top to bottom, outside radially reaching by the lining, density of suspending liquid raises gradually, density the closer to awl wall and end mouth is big more, near cyclone overflow pipe place density of suspending liquid is less, thereby make underflow and overflow density of suspending liquid in the cyclone variant, material separates under suspension centrifugal force and density field effect, the coal grain of different densities is on the different isopycnics, axially the zero-speed enveloping surface is exactly the parting surface of weight material, passing enveloping surface less than the light product of density of suspending liquid on the separating interface moves to the center, discharge from the center overflow pipe with inside spin stream, passing enveloping surface greater than the heavy product of density of suspending liquid on the separating interface is discharged by underflow opening to the wall motion and with external spiral stream, density approaches entering light product or weigh product in the near interface equiprobability of separating interface density of suspending liquid, finally realizes the separation of weight product.The utility model mainly contains following characteristics: overflow pipe adopts the biconial structure, for external diameter, down dwindles gradually from top cover, and cone angle is 1～15 °, for internal diameter, down increases gradually from top cover, and cone angle is 1～5 °.Because external diameter has adopted the increaser shape, at the feeding mouth place, gap between overflow pipe and cyclone inwall is less, like this, the jet loss that materials flow is caused when transferring screw at cyclone charging aperture place to by tangential motion is just little, relative just bigger of centrifugal force, this is very favorable to particle by density separation, especially to fine particle stage material, can obtain the centrifugal coefficient higher, simultaneously than common heavy medium cyclone, the pyramidal structure that adopts the overflow pipe internal diameter can reduce owing to the centrifugal intensity of interior eddy flow in overflow pipe reduces the air column fluctuation that causes gradually, keep the relatively stable of cyclone flow field, improved its sharpness of separation, reduced lower limit of separation.

1. the particular design of pan feeding section, the pan feeding section has adopted the camber line enter material way, and the about side of feeding pipe is all tangent with the cyclone cylindrical tube, and the feeding mouth cross section is rectangle and is the convergent mouth.Making suspension and coal grain is being that energy loss in the whole process of moving along the cyclone spiral inner wall is lower than common two product heavy medium cyclones by the rectilinear motion transition, under same feed pressure, can obtain bigger centrifugal force, therefore help improving separating effect;

2. overflow pipe adopts the biconial structure, for external diameter, down dwindles gradually from top cover, and cone angle is 1～15 °, for internal diameter, down increases gradually from top cover, and cone angle is 1～5 °.Because external diameter has adopted the increaser shape, at the feeding mouth place, gap between overflow pipe and cyclone inwall is less, like this, the jet loss that materials flow is caused when transferring screw at cyclone charging aperture place to by tangential motion is just little, relative just bigger of centrifugal force, this is very favorable to particle by density separation, especially to fine particle stage material, can obtain the centrifugal coefficient higher, simultaneously than common heavy medium cyclone, the pyramidal structure that adopts the overflow pipe internal diameter can reduce owing to the centrifugal intensity of interior eddy flow in overflow pipe reduces the air column fluctuation that causes gradually, keep the relatively stable of cyclone flow field, improved its sharpness of separation, reduced lower limit of separation.

3. the design of underflow section adopt to increase underflow bore (the underflow bore is 1.2～2 times of common cyclone), and it should be that the awl awl connects that the awl post of underflow opening is connected, and helps reducing between solid particle the frictional resistance between resistance and particle and wall mutually.

4. underflow opening adjusting device, it is axis with the cyclone central shaft that this device is positioned at underflow section below, link to each other with underflow section external diameter by bolt, the lifting of bolt can make adjusting device move up and down along central shaft, both play the size of regulating the underflow bore, and can play the stable effect of maintenance center air column shape and size again.Such design, both can improve the coal grain sharpness of separation, reduce lower limit of separation, can play the effect of counter regulation pressure again, improved the separating effect of cyclone greatly.

The novel overflow pipe of a kind of heavy Jie's cyclone of the present utility model has＞and the separating effect of the coal grain of 3mm is close with common two product heavy medium cyclones, but the coal grain of right＜3mm, its separating effect obviously improves, under identical cleans ash, average clean coal recovery can improve 2～3% advantage.

Description of drawings:

Accompanying drawing is the novel overflow pipe of a kind of heavy Jie's cyclone

Among the figure: 1. feeding mouth, 2. cylindrical section, lower cone overflow pipe, 4. conical section, 5. underflow section, 6. center bottom head piece tunable arrangement in the 3. outer upper cone

The specific embodiment:

The present invention is described in further detail below in conjunction with accompanying drawing embodiment, as the novel overflow pipe of the described a kind of heavy Jie's cyclone of accompanying drawing, the structure setting is that the upper body is set to cylinder (2), the stage casing is set to cone (4), the bottom is set to cone horn mouth circular cone tube cyclone of symmetrical horn mouth underflow section (5) composition up and down, in cylinder (2) arranged outside feeding mouth (1) is arranged, lower cone overflow pipe (3) in the upper cone was provided with center bottom head piece tunable arrangement (6) during the horn mouth of underflow section (5) is interior outside the middle part, top was provided with in cylinder (2).

Claims

1. novel overflow pipe of cyclone that heavily is situated between, be a cylinder (2) to be set by the upper body, the stage casing is set to cone (4), the bottom is set to cone horn mouth circular cone tube cyclone of symmetrical horn mouth underflow section (5) composition up and down, cylinder (2) arranged outside has feeding mouth (1), be provided with center bottom head piece tunable arrangement (6) in the horn mouth of underflow section (5), it is characterized in that cylinder (2) inner top is provided with lower cone overflow pipe (3) in the outer upper cone.