CN2150923Y

CN2150923Y - Water cyclone

Info

Publication number: CN2150923Y
Application number: CN 93208225
Authority: CN
Inventors: 张少鹏
Original assignee: TANGSHAN BRANCH GENERAL INST OF COAL SCIENCES
Current assignee: TANGSHAN BRANCH GENERAL INST OF COAL SCIENCES
Priority date: 1993-04-03
Filing date: 1993-04-03
Publication date: 1993-12-29
Anticipated expiration: 2003-04-03

Abstract

The utility model discloses an aqueous medium rotational flow device for three products, which comprises a first section round barrel for primary separation, a material feeding pipe, a positive cone body, a gangue discharging base flow outlet, and a first section central pipe for overflowing low-density materials. The upper part of the first section round barrel is communicated with a secondary section round barrel and an inverted cone body which are used for carrying out quadric separation. Middling coal in a tail section round barrel is exhausted out from a middling coal outlet through a connecting pipe and a decompression chamber, and fancy coal is exhausted out from a fancy coal outlet through a tail section central pipe. One rotational flow device can simultaneously produce three kinds of products. The utility model has the advantages that the structure and the technology are simplified, and the consumption of the motive power is obviously reduced.

Description

Water cyclone

The utility model belongs to swirl-flow devices, particularly a kind of hydrocyclone that is applicable to coal separation.

At present, the widely used hydrocyclone of domestic and international coal preparation plant, described just like " theory and practice of heavy media coal separation " 195～206 pages that Chinese coal industry publishing house publishes in November, 1988, Holland DMS type hydrocyclone, add and take CWC to bore hydrocyclone again, U.S.'s Clabes (Krbes) hydrocyclone, Chinese utility model patent disclose 90201955.4 of a kind of patent No.s on December nineteen ninety 26 and have been called " coal separation with two feeding mouth hydrocyclones ".Their primary structure is made up of feeding pipe, cylinder, cone, overflow pipe, overflow chamber and underflow opening.Difference therebetween is just different on cone shape, but the product of producing all is two kinds.Be the assurance quality of cleaned coal, or efflux qualified spoil, generally use another hydrocyclone again, a certain product that has separated is selected again, product of coal in the generation, the technological process complexity, power consumption is big, promotes the use of difficulty.

Task of the present utility model provides a kind of only by a feeding pipe, a cyclone, produces the hydrocyclone of cleaned coal, middle coal, three kinds of products of spoil simultaneously.

As follows for realizing the technical scheme that task of the present utility model takes.

The three products hydrocyclone comprises the feeding pipe 6 of carrying out sorting for the first time, first cylindrical section 1, first section right circular cone 4, the underflow opening 5 of discharging the high density spoil, first section central tube 2 of overflow case of low density loads; The upper end of first cylindrical section is communicated with two cylindrical sections 7 of carrying out case of low density loads sorting for the second time by first section central tube, its upper end is communicated with two sections bodies 9, the upper end of reverse taper is communicated with rear cylinder 10, the rear cylinder is communicated with an end vertical cut of tube connector 13, end is communicated with pressure-reducing chamber 14 vertical cuts in addition, the lower end in pressure-reducing chamber communicates coal in the discharge with middle coal export 15; The rear cylindrical center is established rear central tube 11, and this central tube communicates with cleaned coal outlet 12, discharges cleaned coal.

Be described in detail the utility model structure and embodiment below in conjunction with accompanying drawing.

Fig. 1 represents three products hydrocyclone front section view.

Fig. 2 presentation graphs 1 is along the A-A cutaway view.

Fig. 3 presentation graphs 1 is along the B-B cutaway view.

Three products hydrocyclone as Fig. 1 represents comprises feeding pipe 6, and this feeding pipe is circular-arc, and its inwall and first cylindrical section 1 inwall meet (Fig. 2) to justify cut; The bottom of first cylindrical section connects first section right circular cone 4, and the inwall of this right circular cone is two arc steps 3, and discharge refuse underflow opening 5 is established in the bottom of right circular cone; Central authorities at first cylindrical section set up first section central tube 2, and suitable for reading and two cylindrical sections 7 of this central tube communicate.Two cylindrical sections 7 are connected the upper end of first cylindrical section, and its inwall is provided with annular boss 8, the upper end two sections reverse tapers 9 that link to each other, and the reverse taper upper end rear cylinder 10 that links to each other is generally made integral piece with two cylindrical sections, annular boss, reverse taper and rear cylinder.Central authorities at the rear cylinder set up rear central tube 11, and this central tube is suitable for reading to communicate with cleaned coal outlet 12.One end of the tube connector of representing as Fig. 3 13 is connected with rear cylinder vertical cut, and the other end is connected with pressure-reducing chamber 14 vertical cuts, and the lower end in pressure-reducing chamber communicates with middle coal export 15.The outlet coaxial line from the discharge refuse underflow opening to the rear central tube is according to the 45 ° of arrangements of integral inclination with the three products hydrocyclone of this coaxial line.

Coal is pressed into material from feeding pipe 6, and cuts track and enter first cylindrical section 1 with circle, forms eddy flow, and the high density material is pushed the wall of first cylindrical section under centrifugal action, and sinks; Because of the caliber of first section central tube 2 bore greater than discharge refuse underflow opening 5, and in the effect of two arc steps 3 of first section right circular cone 4, cause entad hydraulic jump stream, make the sinking material fully carry out first time by density and separate, highdensity spoil is from underflow opening 5 discharges.Its She's material is gone into two cylindrical sections 7 by first section central tube 2 overflows, this overflow still keeps She's pressure head of 60～70%, having enough power makes material carry out the sorting second time, material this moment eddy flow in two cylindrical sections, produce centrifugal force, and under the effect of annular boss 8, two sections reverse tapers 9, cause entad hydraulic jump stream, material is separated by density secondary, and the cleaned coal that density is little is discharged through rear central tube 11, cleaned coal outlet 12; In coal screw in tube connectors 13 by rear cylinder 10, through the pressure-reducing chamber 14, discharge by middle coal export 15.

Advantage of the present utility model:

1, only produce simultaneously three kinds of products by a cyclone, a feeding pipe, its structure, technological process be tubeization greatly, and power consumption obviously reduces.

2, because the inwall of first section right circular cone adopts two arc ledge structures, make the high density material by before the underflow opening discharge, be subjected to repeatedly the effect of centripetal hydraulic jump stream, reduce Ep value about 0.02.

3, circular-arc feeding pipe is cut the track pan feeding with circle, reduces the turbulent flow impact than general vertical cut enter material way commonly used, is conducive to the material sorting.

Claims

1, a kind of three products hydrocyclone, comprise the feeding pipe 6 of carrying out sorting for the first time, first cylindrical section 1, first section right circular cone 4, discharge the underflow opening 5 of high density spoil, first section central tube 2 of overflow case of low density loads formed, it is characterized in that first cylindrical section upper end is communicated with two cylindrical sections 7 of carrying out sorting for the second time, its upper end is communicated with two sections reverse tapers 9, the upper end of reverse taper is communicated with rear cylinder 10, the rear cylinder is communicated with an end vertical cut of tube connector 13, end is communicated with pressure-reducing chamber 14 vertical cuts in addition, the lower end in pressure-reducing chamber communicates with middle coal export 15, the rear cylindrical center is established rear central tube 11, and this central tube communicates with cleaned coal outlet 12.

2, according to the described cyclone of claim 1, it is characterized in that from underflow opening 5 to rear central tube 11 coaxial lines, according to this coaxial line with 45 ° of arrangements of three products hydrocyclone integral inclination.

3, according to the described cyclone of claim 1, it is characterized in that feeding pipe 6 for circular-arc, its inwall and first cylindrical section inwall join to justify tangent line.

4,, it is characterized in that the inwall of first section right circular cone is two arc steps 3 according to the described cyclone of claim 1.

5,, it is characterized in that the inwall of two cylindrical sections is provided with annular boss 8 according to the described cyclone of claim 1.