CN109174472B

CN109174472B - Flotation machine

Info

Publication number: CN109174472B
Application number: CN201811044679.9A
Authority: CN
Inventors: 潘月军; 郝国庆; 王斌; 冯来宏; 田娜; 陈乐�; 党锐刚; 韩喜龙; 曾红久
Original assignee: China Shenhua Energy Co Ltd; Shenhua Shendong Coal Group Co Ltd
Current assignee: China Shenhua Energy Co Ltd; Shenhua Shendong Coal Group Co Ltd
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2020-08-21
Anticipated expiration: 2038-09-07
Also published as: CN109174472A

Abstract

The embodiment of the invention discloses a flotation machine, which comprises: drive division, stirring portion and device body, device body cavity, stirring portion includes pivot and stirring cover, the pivot is rotationally installed on the device body, the pivot with the first end fixed connection of stirring cover, the external diameter of stirring cover first end is less than the external diameter of stirring cover second end, the drive division passes through the pivot drives the stirring cover is in device internal rotation. The embodiment of the invention can increase the eddy area, so that ore pulp is better mixed, and the flotation effect is improved.

Description

Flotation machine

Technical Field

The invention relates to the technical field of coal mines, in particular to a flotation machine.

Background

The flotation machine is a short name of a flotation machine and refers to mechanical equipment for completing a flotation process, and in the flotation machine, ore pulp treated by adding a medicament is stirred and aerated to ensure that certain ore particles are selectively fixed on bubbles; floating to the surface of the ore pulp and being scraped to form a foam product, and the rest part is kept in the ore pulp so as to achieve the purpose of separating minerals; the structure of the flotation machine is various.

At present, the most common flotation machine is a mechanical stirring type flotation machine, the mechanical stirring type flotation machine adopts a straight rod to stir ore pulp, the ore pulp is difficult to be fully mixed, and the flotation effect is poor.

Disclosure of Invention

In view of this, an embodiment of the present invention provides a flotation machine to solve the above technical problem.

The embodiment of the invention provides a flotation machine, which comprises: drive division, stirring portion and device body, device body cavity, stirring portion includes pivot and stirring cover, the pivot is rotationally installed on the device body, the pivot with the first end fixed connection of stirring cover, the external diameter of stirring cover first end is less than the external diameter of stirring cover second end, the drive division passes through the pivot drives the stirring cover is in device internal rotation.

Optionally, the stirring hood is provided with a plurality of rows of air outlet holes, and the plurality of rows of air outlet holes are uniformly distributed along the circumferential direction of the stirring hood.

Optionally, device body bottom is provided with the flotation chamber, the flotation chamber includes cavity and chamber lid, the chamber lid is established on the cavity, be provided with the through-hole on the chamber lid, the stirring cover passes the through-hole is located in the cavity, the internal diameter of chamber lid is followed the direction of stirring cover to the pivot reduces gradually, the internal diameter of through-hole is greater than the external diameter of stirring cover first end, and is less than the external diameter of stirring cover second end.

Optionally, a protruding portion is arranged on the bottom of the cavity in the circumferential direction, and a side surface of the protruding portion facing the cavity cover is parallel to the inner wall of the cavity cover.

Optionally, the device body is a closed container, a mounting hole and a feed inlet are formed in the closed container, the rotating shaft penetrates out of the mounting hole, and materials enter the flotation cavity through the feed inlet.

Optionally, the device further comprises an air guide tube and an air inlet tube, the air guide tube is sleeved on the rotating shaft and located in the device body, an air inlet is formed in the air guide tube, the air outlet end of the air inlet tube is installed on the air inlet, and the air inlet end of the air inlet tube penetrates out of the device body.

Optionally, the inner diameter and the outer diameter of the first end of the agitator shield both increase gradually along the direction from the first end to the second end, wherein the inner diameter of the first end of the agitator shield is equal to the outer diameter of the rotating shaft.

Optionally, the driving part is a driving motor, the driving motor is installed on the device body, a first belt pulley is installed on a driving shaft of the driving motor, a second belt pulley is installed on the rotating shaft, and the first belt pulley is connected with the second belt pulley through a belt.

Optionally, the device further comprises a sliding groove and a sliding block, the sliding block is slidably mounted on the sliding groove, the driving motor is mounted on the sliding block, and the sliding direction of the sliding block is parallel to a connecting line of the driving motor and the rotating shaft.

Optionally, the fixture further comprises a first fixture and a second fixture, the first fixture and the second fixture are both mounted on the sliding block, and the first fixture and the second fixture are buckled with the driving motor respectively.

According to the flotation machine provided by the embodiment of the invention, the driving part, the stirring part and the device body are arranged, and the driving part drives the stirring cover to rotate in the device body through the rotating shaft, so that the eddy area can be increased, ore pulp can be better mixed, the flotation effect is improved, the design of the flotation machine can be enriched, and the problem of single structure of the existing flotation machine is solved.

Drawings

Fig. 1 is a schematic structural view of a flotation machine according to an embodiment of the present invention.

Figure 2 is a side view of a flotation machine of an embodiment of the invention.

Fig. 3 is a schematic structural diagram of a slider and a sliding groove according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example one

Fig. 1 shows a schematic structural view of a flotation machine according to an embodiment of the invention, and fig. 2 shows a side view of a flotation machine according to an embodiment of the invention. As shown in fig. 1-2, an embodiment of the present invention provides a flotation machine, including: a driving part, a stirring part and a device body 8.

The device body 8 is hollow. Stirring portion includes pivot 4 and agitator housing 11, pivot 4 is installed on the device body 8, pivot 4 with the first end fixed connection of agitator housing 11.

In this embodiment, the rotating shaft 4 is detachably connected with the stirring cover 11, so as to facilitate maintenance and replacement.

The outer diameter of the first end of the agitator housing 11 is smaller than the outer diameter of the second end thereof. The stirring hood 11 is open toward the bottom of the apparatus body 8, wherein the end close to the apparatus body 8 is the second end, and the end far from the apparatus body 8 is the first end.

The driving part drives the stirring cover 11 to rotate in the device body 8 through the rotating shaft.

When the flotation machine works, the driving part drives the rotating shaft 4 to rotate, so that the stirring cover 11 is driven to rotate.

Example two

On the basis of the first embodiment, as shown in fig. 1, optionally, the stirring cover 11 is provided with an air outlet 111, so that the gas in the stirring cover 11 can be discharged to the outside of the stirring cover 11, and the flotation effect is improved.

As shown in fig. 1, the stirring hood 11 has a plurality of rows of air outlet holes 111, and the plurality of rows of air outlet holes 111 are uniformly arranged along the circumferential direction of the stirring hood 11, so as to further improve the flotation effect.

Preferably, the bottom of the device body 8 is provided with a flotation chamber 12.

The flotation chamber 12 comprises a chamber body 122 and a chamber cover 121, the chamber cover 121 is covered on the chamber body, and in this embodiment, the flotation chamber 12 is integrally formed.

Be provided with the through-hole on the chamber lid 121, stirring cover 11 passes the through-hole and is located in the cavity 122, the internal diameter of chamber lid 121 is followed stirring cover 11 reduces to the direction of pivot 4 gradually, and the internal diameter of through-hole is greater than the external diameter of stirring cover 11 first end, and is less than the external diameter of stirring cover 11 second end.

Stirring cover 11 is when flotation chamber 12 is rotatory, and the ore pulp is by flotation chamber 12 when the through-hole gets into in the device body 8, can produce centrifugal force that makes progress for the speed of ore pulp and air business turn over flotation chamber 12 improves the flotation effect, but also can make the ore pulp keep high-speed rotatory in flotation chamber 12 always, improves the stability of device operation.

Further, be provided with bellying 123 on the chamber bottom circumference of cavity 122, bellying 123 orientation the side 124 of chamber lid 121 with the inner wall of chamber lid 121 is parallel, not only can make the cavity 122 in form with the parallel flotation space of stirring cover 11 cover wall, still can reduce the volume in flotation space for the ore pulp remains high-speed rotation throughout in the flotation space, improves device operating stability, makes ore pulp and air mix better, improves the flotation effect, still can improve the unit volume handling capacity of flotation machine simultaneously, improves flotation efficiency. In the present embodiment, the cavity 122 is a cylinder.

In a preferred embodiment of the present invention, the apparatus body 8 is a closed container, and is provided with a mounting hole and a feeding hole 10, the rotating shaft 4 penetrates through the mounting hole, and the material directly enters the flotation chamber 12 through the feeding hole 10, so that the ore pulp and the air can be better mixed, and the flotation effect can be further improved.

Further, the flotation machine further comprises an air duct 9 and an air inlet pipe 7, wherein the air duct 9 is sleeved on the rotating shaft 4 and is positioned in the device body 8.

The air guide pipe 9 is provided with an air inlet, the air outlet end of the air inlet pipe 7 is arranged on the air inlet, and the air inlet end of the air inlet pipe 7 penetrates out of the device body.

When stirring cover 11 is high-speed rotatory, can produce centrifugal action and form the negative pressure, in external gas process intake pipe 7, air duct 9 entering device body 8, can guarantee that there is sufficient air and ore pulp mixture in the device body 8 to form sufficient foam, make more mineral bonding on the foam, improve the flotation effect, the air still can directly get into flotation chamber 12 along air duct 9 in addition, better mixes with the ore pulp.

In a preferred embodiment of the present invention, the mixing cover 11 is substantially trumpet-shaped, the inner diameter of the first end is equal to the outer diameter of the rotating shaft 4, and both the inner diameter and the outer diameter of the first end of the mixing cover 11 are gradually increased along the direction from the first end to the second end. Through setting up stirring cover 11 to loudspeaker type, can further increase the vortex area, make ore pulp and air mix better, improve the flotation effect.

Preferably, the driving part is a driving motor 17, and the driving motor 17 is installed on the device body 8.

Install first belt pulley 15 on driving motor 17's the drive shaft 16, install second belt pulley 2 on the pivot 4, first belt pulley 15 passes through belt 1 with second belt pulley 2 and is connected. Through setting up the drive division into driving motor 17, driving motor 17 drives pivot 4 through belt 1 and rotates, can simplify the structure, reduce cost.

As shown in fig. 1, the flotation machine further comprises a balance base 3, the balance base 3 is sleeved on the rotating shaft 4 and is located between the second belt pulley 2 and the device body 8, so that the rotating shaft 4 is ensured to run stably.

Further, the flotation machine also comprises a rotating shaft seat 5 and a fixed seat 6, and the rotating shaft 4 is installed on the device body 8 through the rotating shaft seat 5 and the fixed seat 6.

The rotating shaft 4 is respectively embedded in the fixing holes of the rotating shaft seat 5 and the fixing seat 6. Wherein, pivot seat 5 is installed on fixing base 6, and fixing base 6 is installed on device body 8 to guarantee pivot 4's installation fastness.

In a preferred embodiment of the present invention, the rotating shaft seat 5 and the fixing seat 6 are in interference fit, which not only simplifies the structure, but also adopts interference fit, so that the centering performance of the rotating shaft 4 with the fixing holes on the rotating shaft seat 5 and the fixing seat 6 is good, thereby ensuring the stable operation of the rotating shaft 4, and simultaneously improving the bearing capacity of the rotating shaft seat 5 and the fixing seat 6. In addition, the rotating shaft 4 can cause vibration in the rotating process, and the installation stability of the rotating shaft seat 5 and the fixed seat 6 can be ensured by adopting interference fit.

Optionally, as shown in fig. 1, the fixing seat 6 is a U-shaped groove, and a notch of the U-shaped groove faces the device body 8, so that the dead weight of the flotation machine can be reduced, and the flotation machine is convenient to carry.

Further, as shown in fig. 1-3, the flotation machine further includes a sliding groove 21 and a sliding block 20, the sliding block 20 is slidably mounted on the sliding groove 21, the driving motor 17 is mounted on the sliding block 20, and the sliding direction of the sliding block 20 is parallel to the connection line of the driving motor 17 and the rotating shaft 4, so that the distance between the driving motor 17 and the rotating shaft 4 is adjustable, and the effect of fine equipment structure is achieved.

In the embodiment of fig. 3, the slide groove 21 is engaged with the slider 20 for easy attachment and detachment.

Preferably, the flotation machine further comprises a first clamp 18 and a second clamp 19, the first clamp 18 and the second clamp 19 are both mounted on the sliding block 20, and the first clamp 18 and the second clamp 19 are respectively buckled with the driving motor 17, so that the mounting stability of the motor can be ensured.

In a preferred embodiment of the present invention, the first clamp 18 and the second clamp 19 are both semicircular plates, and may be formed by dividing a circular tube into two parts. The first clamp 18 and the second clamp 19 are both welded to the slider 20.

Further, the apparatus body 8 is provided with a concentrate outlet 22 for discharging concentrate. The bottom of the flotation chamber 12 has a tailings outlet 13 for discharging tailings.

As shown in fig. 1-2, the driving motor 17 is mounted on the upper portion of the apparatus body 8, and the rotary shaft holder 5 and the fixed holder 6 are also located on the upper portion of the apparatus body 8. The feed inlet 10 and the concentrate outlet 22 are located on two side walls of the device body 8 which are arranged oppositely, and the tailings outlet 13 is located at the bottom of the device body 8.

Preferably, the apparatus body 8 is further provided with support legs 14, and the support legs 14 support the apparatus body 8.

When the flotation machine provided by the embodiment of the invention works, ore pulp and a medicament are fully mixed and then enter the device body 8, and the driving motor 17 drives the stirring cover 11 to rotate through the belt 1 and the rotating shaft 4.

After the stirring hood 11 rotates, negative pressure is formed in the flotation chamber 12, so that the ore pulp inside the device body 8 enters a mixing area in the flotation chamber 12. Meanwhile, the air inlet pipe 7 sucks sufficient air and enters the mixing area through the air duct 9, and the ore pulp, the air and the medicament are mixed in the mixing area.

Under the action of the centrifugal force of the stirring cover 11, the mixed ore pulp enters the device body 8 again, air forms bubbles and is crushed, the bubbles are fully contacted with minerals, the minerals are bonded on the foams, and the foams float on the surface of the ore pulp to form mineralized foams, so that mineralized bubbles are formed.

The mineralized bubbles are uniformly distributed on the surface of the ore pulp in the device body 8; the non-magnetic ore particles are discharged through a tailing outlet 13 at the bottom of the device body 8 under the action of gravity and slurry flow, and the minerals are discharged through a concentrate outlet 22.

The technical solutions of the present invention have been described in detail with reference to specific embodiments, which are used to help understand the ideas of the present invention. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present invention also belong to the protection scope of the present invention.

Claims

1. A flotation machine, comprising: the stirring device comprises a driving part, a stirring part and a device body, wherein the device body is hollow, the stirring part comprises a rotating shaft and a stirring cover, the rotating shaft is rotatably arranged on the device body, the rotating shaft is fixedly connected with a first end of the stirring cover, the outer diameter of the first end of the stirring cover is smaller than that of a second end of the stirring cover, and the driving part drives the stirring cover to rotate in the device body through the rotating shaft;

the stirring cover is provided with a plurality of rows of air outlet holes which are uniformly distributed along the circumferential direction of the stirring cover;

the device comprises a device body and is characterized in that a flotation cavity is arranged at the bottom of the device body and comprises a cavity body and a cavity cover, the cavity cover is arranged on the cavity body in a covering manner, a through hole is formed in the cavity cover, the stirring cover penetrates through the through hole and is positioned in the cavity body, the inner diameter of the cavity cover is gradually reduced along the direction from the stirring cover to a rotating shaft, and the inner diameter of the through hole is larger than the outer diameter of the first end of the stirring cover and smaller than the outer diameter of the second end of the stirring cover;

the side surface of the bulge facing the cavity cover is parallel to the inner wall of the cavity cover;

the device body is a closed container, a mounting hole and a feeding hole are formed in the device body, the rotating shaft penetrates out of the mounting hole, and materials enter the flotation cavity through the feeding hole;

the air guide pipe is sleeved on the rotating shaft and is positioned in the device body, an air inlet is formed in the air guide pipe, an air outlet end of the air inlet pipe is installed on the air inlet, and an air inlet end of the air inlet pipe penetrates out of the device body;

the inner diameter and the outer diameter of the first end of the stirring cover are gradually increased along the direction from the first end to the second end, wherein the inner diameter of the first end of the stirring cover is equal to the outer diameter of the rotating shaft;

the driving part is a driving motor, the driving motor is arranged on the device body, a first belt pulley is arranged on a driving shaft of the driving motor, a second belt pulley is arranged on the rotating shaft, and the first belt pulley is connected with the second belt pulley through a belt;

the sliding block is slidably arranged on the sliding groove, the driving motor is arranged on the sliding block, and the sliding direction of the sliding block is parallel to a connecting line of the driving motor and the rotating shaft;

the first clamp and the second clamp are both arranged on the sliding block and are buckled with the driving motor respectively;

the sliding groove is clamped with the sliding block;

the balance seat is sleeved on the rotating shaft and positioned between the second belt pulley and the device body;

the device also comprises a rotating shaft seat and a fixed seat, wherein the rotating shaft is arranged on the device body through the rotating shaft seat and the fixed seat;

the rotating shaft is respectively embedded in the fixing holes of the rotating shaft seat and the fixing seat; the rotating shaft seat is arranged on the fixed seat, the fixed seat is arranged on the device body, and the rotating shaft seat and the fixed seat are in interference fit;

the fixed seat is a U-shaped groove, and the notch of the U-shaped groove faces the device body;

the device body is also provided with a concentrate outlet for discharging concentrate, and the bottom of the flotation cavity is provided with a tailing outlet for discharging tailing;

the feed inlet and the concentrate outlet are positioned on two side walls which are arranged opposite to the device body, and the tailing outlet is positioned at the bottom of the device body;

the device body is also provided with supporting legs which support the device body.