CN217940458U

CN217940458U - Four-product classifier

Info

Publication number: CN217940458U
Application number: CN202221815653.1U
Authority: CN
Inventors: 刘建朝; 彭永华
Original assignee: Jiangxi Weihong Lithium Industry Co ltd
Current assignee: Jiangxi Weihong Lithium Industry Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-12-02
Anticipated expiration: 2032-07-14

Abstract

The utility model provides a four-product classifier, which comprises a machine body, wherein a first classifying area, a second classifying area, a third classifying area and a fourth classifying area which are sequentially and independently arranged from inside to outside are arranged in the machine body; a sunken tube is arranged at the bottom of the first grading zone, the side wall of the sunken tube is connected with a tangential water jacking tube, an inverted cone-shaped screen is arranged at the bottom of the sunken tube, a cone is arranged at the top end of the inverted cone-shaped screen, and an annular gap is formed between the cone and the top end of the inverted cone-shaped screen; an annular sieve plate is arranged in the second grading zone, and a bottom top water pipe is arranged at the bottom of the second grading zone; and a vibration diaphragm is arranged at the bottom of the third grading area, and an exciter is arranged at the vibration diaphragm. The utility model discloses carried out the classification of four grades to the material, be equivalent to desliming, hierarchical flotation preparation and hierarchical return ore grinding and realized the integration, than traditional multiunit swirler classification method save material wearing and tearing and energy consumption, and every hierarchical granularity can realize the control adjustment.

Description

Four-product classifier

Technical Field

The utility model relates to a grader technical field especially relates to a four product graders.

Background

The existing ore pulp material classification mostly adopts a classification cyclone and a spiral classifier. The grading cyclone is characterized by easy abrasion, high material cost and high energy consumption due to the need of a certain pressure; and the cyclone classification has short-circuit flow, so that overflow has certain coarse leakage, the classification effect is general, and particularly, a plurality of small cyclone groups are needed in fine particle classification, so that the abrasion is easy to be uneven, and the stability is poor. The spiral classifier is characterized in that two products can be classified, the occupied space is large, the processing amount is not large enough, the spiral classifier is not suitable for model selection of large factories and the price is expensive. For multi-product grading operation, a plurality of stages are formed by adopting the cyclone units, the energy consumption is high, and the grading granularity is not easy to adjust.

The ore pulp material needs to be subjected to classified flotation after desliming, and when the flotation machine is adopted for flotation during flotation operation, the effective separation particle size of the general flotation machine is 0.35mm-0.05mm, and the separation precision of the fine fraction-0.05 mm is poor; if the flotation column is adopted for flotation, the effective separation particle size of the flotation column is 0.01mm-0.15mm, the separation precision of particles larger than 0.15mm is poor, the tailing is easy to run, and the fine particle grade of-0.01 mm (or-0.003 mm) is difficult to separate.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem who exists among the background art, the utility model provides a four product grader.

The utility model provides a four-product grader, which comprises a machine body, wherein a first grading area, a second grading area, a third grading area and a fourth grading area which are sequentially and independently arranged from inside to outside are arranged in the machine body; a sunken tube is arranged at the bottom of the first grading zone, the side wall of the sunken tube is connected with a tangential water jacking tube, an inverted cone-shaped screen is arranged at the bottom of the sunken tube, a cone is arranged at the top end of the inverted cone-shaped screen, and an annular gap is formed between the cone and the top end of the inverted cone-shaped screen; an annular sieve plate is arranged in the second grading zone, and a plurality of bottom water jacking pipes are circumferentially arranged at the bottom of the second grading zone; and a vibration diaphragm is arranged at the bottom of the third grading area, and an exciter is arranged at the vibration diaphragm.

Preferably, the top end of the first classification zone is provided with an inlet pipe, the bottom of the sinking pipe is provided with a first-level material outlet pipe butted with the inverted cone-shaped screen, and the inlet pipe, the cone and the inverted cone-shaped screen are coaxially arranged.

Preferably, a first-stage discharge valve is arranged on the first-stage material outlet pipe.

Preferably, a plurality of second-level material outlet pipes are arranged at the bottom of the second classification area and are uniformly distributed in the circumferential direction, the top ends of the second-level material outlet pipes penetrate through the annular sieve plate, and the top ends of the second-level material outlet pipes are provided with hollow float switches

Preferably, a plurality of third-level material outlet pipes are arranged at the bottom of the third classification area and are uniformly distributed on the circumference, and a third-level discharge valve is arranged on each third-level material outlet pipe.

Preferably, the vibration diaphragms are arranged in plurality and are uniformly distributed on the circumference.

Preferably, a fourth-stage material outlet pipe is arranged at the bottom of the fourth grading area.

Preferably, a first cylinder, a second cylinder and a third cylinder are coaxially arranged in the machine body from inside to outside, and the first cylinder, the second cylinder and the third cylinder divide the interior of the machine body into a first classification area, a second classification area, a third classification area and a fourth classification area.

The utility model provides a four-product classifier, the utility model classifies the material by four grain grades, which is equivalent to integrating desliming, classification flotation preparation and classification return grinding, saves material abrasion and energy consumption compared with the traditional multi-group cyclone classification method, and can realize control and adjustment of each classification grain size; the opening degree of the float switch is controlled by controlling the flow of the top water pipe at the bottom and the weight of a counterweight on the hollow float switch, so that the lower limit of the discharge granularity of the second-level material is controlled; and the lower limit of the granularity of the third-stage material is adjusted through the vibration frequency and the vibration amplitude of the vibration exciter. The utility model discloses the first grade material of the first classification zone gets back to the ore grinding system, grinds the ore again; the second-stage materials in the second-stage classification area enter a flotation machine for flotation, and the third-stage materials in the third-stage classification area enter a flotation column for separation, so that the classification flotation can improve the flotation precision and is beneficial to improving the grade and the recovery rate; the fourth grade material in the fourth grade classification area is directly discharged and does not enter a flotation system, so that the stability of flotation is facilitated, and the consumption of reagents is reduced.

The vibrating diaphragm has two functions, namely, the fluidization of the materials at the bottom of the third classification area is ensured, and the fluidization ensures smooth discharge of a third-stage material outlet pipe at the bottom of the third classification area; secondly, a vortex ring is generated under the vibration action of the vibration mechanism, and the vortex ring can bring fine-grained materials at the bottom of the third classification area to the upper part, so that the classification precision in the third classification area is ensured; the lower limit of the granularity of the first-stage material is controlled by controlling the flow of the tangential top water pipe and the opening degree of the first-stage material outlet pipe;

drawings

Fig. 1 is a schematic structural view of a four-product classifier according to the present invention;

fig. 2 is a bottom view of a four-product classifier according to the present invention;

fig. 3 is a top view of a four-product classifier according to the present invention;

fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 3.

Detailed Description

Referring to fig. 1-4, the utility model provides a four-product classifier, which comprises a machine body 1, wherein a first cylinder, a second cylinder and a third cylinder are coaxially arranged in the machine body 1 from inside to outside, and the first cylinder, the second cylinder and the third cylinder divide the interior of the machine body 1 into a first classification area 2, a second classification area 3, a third classification area 4 and a fourth classification area 5; wherein:

the top of 2 first subregion is provided with

inlet pipe

21, and 2 bottoms of first subregion are provided with immersed tube 6, and immersed tube 6 lateral wall is connected with tangential push water pipe 7, is provided with back taper screen cloth 9 in the immersed tube 6, and back taper screen cloth 9 top is provided with cone 10 and is formed with annular clearance between cone 10 and the back taper screen cloth 9 top. The bottom of the sunken tube 6 is provided with a first-level material outlet pipe 8 butted with the inverted cone-shaped screen 9, the first-level material outlet pipe 8 is provided with a first-level discharge valve 18, and the feed pipe 21, the cone 10 and the inverted cone-shaped screen 9 are coaxially arranged.

An annular sieve plate 11 is arranged in the second classification zone 3, and a plurality of bottom water jacking pipes 13 are circumferentially arranged at the bottom of the second classification zone 3. A plurality of second-level material outlet pipes 12 are arranged at the bottom of the second classification area 3, the plurality of second-level material outlet pipes 12 are evenly distributed on the circumference, the top ends of the second-level material outlet pipes 12 penetrate through the annular sieve plate 11, and the top ends of the second-level material outlet pipes 12 are provided with hollow float switches 19.

The bottom of the third grading zone 4 is provided with a plurality of vibrating diaphragms 15 which are uniformly distributed in the circumferential direction, and an exciter 16 is arranged at the vibrating diaphragms 15. A plurality of third-stage material outlet pipes 14 are arranged at the bottom of the third classification area 4, the third-stage material outlet pipes 14 are evenly distributed on the circumference, and a third-stage discharge valve 20 is arranged on each third-stage material outlet pipe 14.

And a fourth-stage material outlet pipe 17 is arranged at the bottom of the fourth grading region 5.

The working principle is illustrated below by taking 0.3mm, 0.074mm and 0.01mm as grain size division points:

ore pulp materials enter the middle part of the first grading zone 2 from a feeding pipe 21, are dispersed by the cone 10 and flow to the periphery, and then are acted by ascending water flow of annular gaps at the lower part (inlet water of the tangential water jacking pipe 7 can form annular ascending water flow by penetrating through the inverted cone-shaped screen 9), coarse-grained materials (controlled to be +0.3 mm) in the ore pulp materials can penetrate through the ascending water flow in the annular gaps and enter the inverted cone-shaped screen 9 at the bottom, are discharged under the control of the first-stage material valve 18 at the bottom to form first-stage materials, and the materials return to the grinding machine for re-grinding;

the residual material (-0.3 mm) overflows from the top end of the first cylinder along with the rising of water flow and enters the second classification area 3, a bottom top water pipe 13 is arranged at the bottom of the second classification area 3, the top water of the bottom top water pipe 13 penetrates through a sieve plate to form rising water flow, under the action of the rising water flow, the thinner material (-0.074 mm) overflows from the top end of the second cylinder and enters the third classification area 4, the relatively coarse particles (0.3-0.074 mm) are left at the bottom of the second classification area 3 for sedimentation and concentration, when the material level of the sedimentation and concentration reaches a certain height, a hollow float switch 19 in the hollow float switch can float, the material is discharged through a second-stage material outlet pipe 12 (when the material level of the sedimentation and concentration descends, the hollow float switch 19 can be automatically closed), the second-stage material is formed, and can enter a flotation machine for flotation;

the vibration exciter 16 and the vibration diaphragm 15 are arranged at the bottom of the third classification region 4, and the vibration diaphragm 15 has two functions, namely, the fluidization of the materials at the bottom of the third classification region 4 is ensured, and the fluidization ensures that the discharging of a third-stage material outlet pipe 14 at the bottom of the third classification region 4 is smooth; secondly, a vortex ring is generated under the vibration action of the third grading zone, and the vortex ring can bring fine-grained materials at the bottom of the third grading zone 4 to the upper part, so that the grading precision in the third grading zone 4 is ensured; the grain diameter of discharged materials at the bottom of the third grading zone 4 is 0.074-0.01mm, the discharged materials are controlled by a third-stage discharge valve 20 on a third-stage material outlet pipe 14 to be discharged as third-stage materials, and the third-stage materials can enter a flotation column for flotation;

and the final residual materials overflow from the top end of the third cylinder body and enter the fourth grading area 5, the fourth grading area 5 is only an annular material collecting hopper, fourth-stage materials (-0.01 mm) formed after collection are conveyed to a slurry pump through a fourth-stage material outlet pipe 17, and then the fourth-stage materials are conveyed to a thickener or are subjected to next treatment through the slurry pump.

The control method of the size fraction dividing point comprises the following steps: the working principle is illustrated above by only taking 0.3mm, 0.074mm and 0.01mm as grade separation points, and the grade separation points can be controlled by the following method: the lower limit of the granularity of the first-stage material is controlled by controlling the flow of the tangential water jacking pipe 7 and the opening degree of the first-stage material outlet pipe 8; the opening degree of the float switch is controlled by controlling the flow of the top water pipe 13 at the bottom and the weight of a counterweight on the hollow float switch 19, so that the lower limit of the discharging granularity of the second-stage material is controlled; the lower limit of the granularity of the third-stage material is adjusted by the vibration frequency and the vibration amplitude of the vibration exciter 16.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A four-product classifier is characterized by comprising a machine body (1), wherein a first classifying area (2), a second classifying area (3), a third classifying area (4) and a fourth classifying area (5) which are independently arranged from inside to outside are arranged in the machine body (1); a sinking pipe (6) is arranged at the bottom of the first grading area (2), the side wall of the sinking pipe (6) is connected with a tangential water jacking pipe (7), an inverted cone-shaped screen (9) is arranged in the sinking pipe (6), a cone (10) is arranged at the top end of the inverted cone-shaped screen (9), and an annular gap is formed between the cone (10) and the top end of the inverted cone-shaped screen (9); an annular sieve plate (11) is arranged in the second grading zone (3), and a plurality of bottom water jacking pipes (13) are circumferentially arranged at the bottom of the second grading zone (3); the bottom of the third grading area (4) is provided with a vibrating diaphragm (15), and an exciter (16) is arranged at the vibrating diaphragm (15).

2. The four-product grader according to claim 1, wherein the top end of the first grading zone (2) is provided with a feeding pipe (21), the bottom of the sinking pipe (6) is provided with a first-stage material outlet pipe (8) butted with the inverted cone-shaped screen (9), and the feeding pipe (21), the cone (10) and the inverted cone-shaped screen (9) are coaxially arranged.

3. Four product sizer according to claim 1, characterized in that the first-stage material outlet pipe (8) is provided with a first-stage discharge valve (18).

4. The four-product grader according to any one of claims 1-3, wherein a plurality of second-stage material outlet pipes (12) are arranged at the bottom of the second grading zone (3), the plurality of second-stage material outlet pipes (12) are uniformly distributed in the circumferential direction, the top ends of the second-stage material outlet pipes (12) penetrate through the annular sieve plate (11), and hollow float switches (19) are arranged at the top ends of the second-stage material outlet pipes (12).

5. The four-product classifier according to any one of claims 1 to 3, wherein a plurality of third material outlet pipes (14) are arranged at the bottom of the third classification region (4), the plurality of third material outlet pipes (14) are uniformly distributed in a circumferential manner, and third discharge valves (20) are arranged on the third material outlet pipes (14).

6. Four product sizer according to any one of claims 1 to 3, characterized in that the vibrating diaphragm (15) is provided in plurality and in that the plurality of vibrating diaphragms (15) is circumferentially uniformly distributed.

7. Four product sizer according to any of claims 1-3, characterized in that the fourth sizing area (5) is provided at its bottom with a fourth material outlet pipe (17).

8. A four-product classifier according to any one of claims 1 to 3, wherein a first cylinder, a second cylinder and a third cylinder are coaxially arranged in the machine body from inside to outside, and the first cylinder, the second cylinder and the third cylinder divide the interior of the machine body (1) into a first classification zone (2), a second classification zone (3), a third classification zone (4) and a fourth classification zone (5).