阅读说明：本技术 一种水力浮选设备及其疏通方法 (Hydraulic flotation equipment and dredging method thereof ) 是由 李超 曹亦俊 彭伟军 于 2020-07-17 设计创作，主要内容包括：本发明涉及一种水力浮选设备及其疏通方法,属于选矿设备技术领域,解决了现有技术中水力浮选设备尾矿拥堵塞实影响尾矿及时排出的问题。水力浮选设备包括水力浮选机、升降装置和拥堵疏通机构；所述水力浮选机的上部设有溢流槽,所述升降装置设置于溢流槽的盖顶；所述拥堵疏通机构包括撞针杆和撞针头；所述撞针杆的一端与升降装置相连,另一端与撞针头相连,在升降装置的带动下,拥堵疏通机构能够上下移动并自旋转动。本发明的水力浮选设备能够提高分选效率和分选效果,能够高效快速疏通拥堵尾矿。(The invention relates to a hydraulic flotation device and a dredging method thereof, belongs to the technical field of mineral processing equipment, and solves the problem that tailings are jammed in the hydraulic flotation device in the prior art so that the tailings are discharged in time. The hydraulic flotation equipment comprises a hydraulic flotation machine, a lifting device and a congestion dredging mechanism; the upper part of the hydraulic flotation machine is provided with an overflow trough, and the lifting device is arranged on the top cover of the overflow trough; the congestion dredging mechanism comprises a needle striking rod and a needle striking head; one end of the plunger rod is connected with the lifting device, the other end of the plunger rod is connected with the plunger head, and the congestion dredging mechanism can move up and down and rotate in a self-rotating mode under the driving of the lifting device. The hydraulic flotation equipment disclosed by the invention can improve the separation efficiency and the separation effect and can efficiently and quickly dredge the jammed tailings.)

1. The hydraulic flotation equipment is characterized by comprising a hydraulic flotation machine (2), a lifting device (1) and a congestion dredging mechanism; an overflow trough is arranged at the upper part of the hydraulic flotation machine (2), and the lifting device (1) is arranged at the top cover of the overflow trough; the jam dredging mechanism comprises a striker rod (5) and a striker head (6); one end of the striking pin rod (5) is connected with the lifting device (1), and the other end is connected with the striking pin head (6).

2. The hydraulic flotation plant according to claim 1, wherein the striker rod (5) is cylindrical and the striker head (6) is of inverted cone shape.

3. The hydraulic flotation plant according to claim 2, wherein the striker rod (5) is detachably connected to the striker head (6).

4. The hydro flotation plant according to claim 1, wherein the hydro flotation machine (2) is internally provided with an annular cavitation device (7), the annular cavitation device (7) comprising a first annular channel (12) and a second annular channel (13), the second annular channel (13) being nested in the first annular channel (12), the first annular channel (12) having an inner diameter greater than an outer diameter of the second annular channel (13); the upper surface and the lower surface of the first circular ring through channel (12) and the second circular ring through channel (13) are both planes; the first circular ring through channel (12) is connected with the second circular ring through channel (13) through a guide pipe (14).

5. The hydraulic flotation plant according to claim 4, characterized in that the hydraulic flotation machine (2) further comprises a gas-water mixing input pipe, and the flow guide pipe (14) is connected with a gas-water mixing input device through the gas-water mixing input pipe.

6. The hydroplaning plant according to claim 4, characterized in that the upper surfaces of the first annular through channel (12), the second annular through channel (13) and the flow guide tube (14) are provided with a plurality of through holes.

7. The hydraulic flotation plant according to claim 6, wherein the number of flow ducts (14) is 4, the 4 flow ducts (14) being evenly distributed along the outer side of the second annular channel (13).

8. The hydraulic flotation plant according to any one of claims 1 to 7, characterized in that a pulp concentration sensor (9) is arranged at the bottom of the hydraulic flotation machine (2), the pulp concentration sensor (9) is connected with an external congestion sensing control box (8), and the congestion sensing control box (8) is connected with the lifting device (1).

9. A dredging method of a hydraulic flotation device, which is characterized in that the hydraulic flotation device of the claims 1-8 is adopted, and the dredging method comprises the following steps:

step 1, an ore pulp concentration sensor (9) at the bottom of a hydraulic flotation machine (2) monitors the ore pulp concentration at the bottom of a tailing tank and transmits ore pulp concentration information to a congestion sensing control box (8);

And 2, transmitting control information to the lifting device (1) by the jam sensing control box (8), and controlling the position of the jam of the tailing tank, which is collided by the striker rod (5) and the striker head (6) of the jam dredging mechanism, by the lifting device (1) to dredge.

10. The dredging method according to claim 9, wherein in the step 2, the ore pulp concentration is higher than the set ore pulp concentration, the congestion sensing control box (8) transmits the opening control information to the lifting device (1), and after the lifting device (1) receives the opening control information, the congestion dredging mechanism is adjusted to have a certain rotation speed and a certain up-down moving speed, so that the collision needle head (6) collides the position of the congestion at the bottom of the tailing trough; when the ore pulp concentration at the position of congestion is reduced to reach a normal value, the ore pulp concentration sensor (9) transmits the stopping control information to the congestion sensing control box (8), the congestion sensing control box (8) transmits the stopping control information to the lifting device (1), and the lifting device (1) adjusts the congestion dredging mechanism to restore the congestion dredging mechanism.

Technical Field

The invention relates to the technical field of mineral processing equipment, in particular to hydraulic flotation equipment and a dredging method thereof.

Background

The hydraulic flotation equipment is mineral processing equipment suitable for sorting coarse particles, the concentration of ore pulp is high in the flotation process, the particle size is large, and the ore pulp can be gradually accumulated at the bottom of a tailing tank in the process of forming a bed layer, so that a tailing pipe is not plugged smoothly. The existing common technology is that a back flushing device is arranged at the bottom of a tailing pipe, and the back flushing water impacts the bottom of a tailing tank and blocks coarse-grained ore pulp in the tailing pipe, so that ore pulp blocks are loosened and dredged. But the backwash water pressure of backwash water device is less, is difficult to pierce through the higher thick coarse ore grain layer of concentration, and mediation efficiency is poor, and especially when winter, under the lower condition of temperature, the backwash water pipe easily freezes, and the backwash mediation degree of difficulty increases, and back in the backwash water gets into flotation device, can dilute the ore pulp concentration, influences the flotation index.

Disclosure of Invention

In view of the analysis, the invention aims to provide hydraulic flotation equipment and a dredging method thereof, which are used for solving the problem that the tailings are jammed in the existing hydraulic flotation equipment so that the tailings are discharged in time.

The purpose of the invention is mainly realized by the following technical scheme:

in one aspect, the invention provides a hydraulic flotation device, which comprises a hydraulic flotation machine, a lifting device and a congestion dredging mechanism; the upper part of the hydraulic flotation machine is provided with an overflow trough, and the lifting device is arranged on the top cover of the overflow trough; the congestion dredging mechanism comprises a needle striking rod and a needle striking head; one end of the striking pin rod is connected with the lifting device, and the other end of the striking pin rod is connected with the striking pin head;

further, under the drive of elevating gear, the mediation mechanism that blocks up can reciprocate and spin the rotation.

Furthermore, the striker rod is cylindrical, and the striker head is in an inverted cone shape.

Furthermore, the needle striking rod is detachably connected with the needle striking head.

Further, an annular cavitation device is arranged inside the hydraulic flotation machine and comprises a first annular through channel and a second annular through channel, the second annular through channel is nested in the first annular through channel, and the inner diameter of the first annular through channel is larger than the outer diameter of the second annular through channel; the upper surface and the lower surface of the first circular ring through channel and the second circular ring through channel are both planes; the first circular ring through channel is connected with the second circular ring through channel through a flow guide pipe.

Furthermore, the hydraulic flotation machine also comprises a gas-water mixing input pipe, and the guide pipe is connected with the gas-water mixing input device through the gas-water mixing input pipe.

Furthermore, a plurality of through holes are formed in the upper surfaces of the first circular ring through channel, the second circular ring through channel and the flow guide pipe.

Furthermore, the quantity of honeycomb duct is 4, and 4 honeycomb ducts evenly distributed along the lateral surface of second ring through-channel.

Furthermore, an ore pulp concentration sensor is arranged at the bottom of the hydraulic flotation machine and connected with an external congestion sensing control box, and the congestion sensing control box is connected with a lifting device.

On the other hand, the invention also provides a dredging method of the hydraulic flotation equipment, and the dredging method comprises the following steps:

step 1, an ore pulp concentration sensor at the bottom of a hydraulic flotation machine monitors the ore pulp concentration at the bottom of a tailing tank, and transmits ore pulp concentration information to a congestion sensing control box;

and 2, transmitting the control information to a lifting device by the congestion sensing control box, and controlling the position of the congestion of the tailing tank by a striker rod and a striker head of the congestion dredging mechanism through the lifting device to dredge.

Further, in the step 2, the concentration of the ore pulp is higher than the set concentration of the ore pulp, the congestion sensing control box transmits the opened control information to the lifting device, and the lifting device adjusts the congestion dredging mechanism to enable the congestion dredging mechanism to have a certain autorotation speed and an up-down moving speed after receiving the opened control information, so that the collision needle head impacts the congested position at the bottom of the tailing trough to loosen and dredge the blocking object; when the ore pulp concentration at the jam position is reduced to reach a normal value, the ore pulp concentration sensor transmits the stopping control information to the jam sensing control box, the jam sensing control box transmits the stopping control information to the lifting device, and the lifting device adjusts the jam dredging mechanism to enable the jam dredging mechanism to recover the original state.

Compared with the prior art, the invention has at least one of the following beneficial effects:

a) the hydraulic flotation equipment provided by the invention has the advantages that through the coordination and the coordination of the annular cavitation device and the congestion dredging mechanism, in the separation process, the annular cavitation device injects a water-air mixture inwards from the periphery, the water injection is uniform and rapid, the existing cavitation device injecting water from the bottom is replaced, a space is vacated for a striker to dredge the congestion movement path of tailings, and the congestion dredging mechanism can reach the congestion position through the annular cavitation device, so that the congested tailings are effectively and timely dredged; meanwhile, the annular cavitation device can generate uniform small bubbles, and the separation efficiency and the separation effect can be improved.

b) The congestion dredging mechanism of the hydraulic flotation equipment comprises the striker rod and the striker head, and the striker head is used for dredging congested tailings, so that the effect of efficiently and quickly dredging the congested tailings is achieved.

c) The detachable connection of the striking pin rod and the striking pin head ensures that the striking pin head can be replaced in time after being worn after long-term use, the striking pin rod does not need to be replaced, and the cost is reduced.

d) The annular cavitation device of the hydraulic flotation equipment is provided with the two nested circular ring through channels which are connected through the flow guide pipe, and the flow guide pipe is distributed in a cross shape, so that the ore pulp is ensured to have enough space to rapidly fall and deposit, small bubbles generated by cavitation are ensured to be uniformly distributed, the separation efficiency is improved, and the separation effect is ensured.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a schematic diagram of the overall configuration of a hydraulic flotation plant according to the invention;

fig. 2 is a top view of the annular cavitation device of the present invention.

Reference numerals:

1-a lifting device; 2-a hydraulic flotation machine; 3-a perforated plate; 4-a feed pipe; 5-a plunger; 6-knocking needle head; 7-an annular cavitation device; 8-congestion sensing control box; 9-a pulp concentration sensor; 10-a tailing regulating electromagnetic valve; 11-a tailing discharge pipe; 12-a first circular ring channel; 13-a second circular ring channel; 14-a flow guide pipe.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

One embodiment of the invention, as shown in fig. 1 to 2, discloses a hydraulic flotation device, which comprises a hydraulic flotation machine 2, a lifting device 1 and a congestion dredging mechanism; wherein, the upper part of the hydraulic flotation machine 2 is provided with an overflow trough, and the lifting device 1 is arranged on the top cover of the overflow trough; the jam dredging mechanism comprises a striker rod 5 and a striker head 6; one end of the plunger rod 5 is connected with the lifting device 1, the other end of the plunger rod 5 is provided with a plunger 6, the jam dredging mechanism can move up and down at a certain speed through adjustment of the lifting device 1, the jam dredging mechanism extends into the hydraulic flotation machine 2 and can reach a jam position, and the jam dredging mechanism is recovered to the original state.

Preferably, the congestion dredging mechanism can rotate around the shaft in a self-spinning mode at a certain rotating speed so as to enhance the dredging effect and speed.

Specifically, the plunger 5 is cylindrical, and the plunger head 6 is inverted conical, so that the replacement is convenient, and the plunger 5 and the plunger head 6 are detachably connected.

Specifically, when the jam dredging mechanism is used for dredging, the jam dredging mechanism moves up and down and rotates in a self-rotating mode, and the self-rotating mode occurs in the process of reaching the jam position from the initial position, so that the jam dredging mechanism is similar to an electric drill drilling principle, and has a better effect of penetrating through jammed minerals.

The upper part of the hydraulic flotation machine 2 is a cylinder, the lower part of the hydraulic flotation machine is a conical structure (the conical structure can be called as a tailing tank), the bottom of the tailing tank is provided with a tailing discharge pipe 11, and the tailing discharge pipe 11 is used for discharging tailings.

Specifically, an annular cavitation device 7 is arranged inside the hydraulic flotation machine 2, as shown in fig. 2, the annular cavitation device 7 is located at a junction between an upper portion and a lower portion of the hydraulic flotation machine 2, the annular cavitation device 7 includes a first annular through channel 12 and a second annular through channel 13, the second annular through channel 13 is nested in the first annular through channel 12, and an inner diameter of the first annular through channel 12 is larger than an outer diameter of the second annular through channel 13; the first circular ring through channel 12 is connected with the second circular ring through channel 13 through a flow guide pipe 14; specifically, the upper surfaces of the first circular channel 12 and the second circular channel 13 are provided with a plurality of through holes, and the upper surface of the flow guide pipe 14 is also provided with a plurality of through holes.

In order to ensure the smooth sedimentation of the slurry, the inner diameter d1 of the first circular through channel 12 is larger than the outer diameter d2 of the second circular through channel 13. Considering that when d2/d1 is too small, the coverage surface of the middle ascending water flow is too small, and the water distribution is not uniform; when d2/d1 is too large, the hollowed area of the middle annular space is too small, and the high-density coarse-particle minerals are easy to jam on the surface of the annular cavitation device. Therefore, d 1/4. ltoreq. d 2. ltoreq. d1/2 is controlled.

Specifically, the hydraulic flotation machine 2 further comprises a gas-water mixing input pipe, and the guide pipe 14 is connected with the gas-water mixing input device through the gas-water mixing input pipe.

It should be noted that the operation principle of the annular cavitation device 7 is as follows: gas-water mixture is injected into the annular cavitation device 7 by a gas-water mixing input device, and the gas-water mixture is immediately distributed in the whole annular channel; the gas-water mixture passes through the porous annular cavitation device 7, as the sectional area of a pore passage is reduced and the pressure is suddenly reduced, cavitation generates a large number of small bubbles and disperses in ascending liquid flow, concentrate with good hydrophobicity in ore pulp collides and adsorbs the bubbles mixed in the ascending liquid flow, hydrophilic coarse-particle gangue is not adsorbed by the bubbles, the apparent density of the coarse-particle concentrate is reduced by the adsorption of the bubbles, the density difference between the coarse-particle concentrate and the gangue is enlarged, and the floating of the coarse-particle concentrate is facilitated. The annular cavitation device 7 can improve the separation efficiency and is beneficial to shortening the whole separation process.

Considering the simplicity of processing the first circular through-channel 12, the second circular through-channel 13 and the flow guide tube 14, and adjusting the aperture of the through-hole on the upper surface in time for sorting minerals of different particle sizes, the annular cavitation device 7 includes a first circular through-channel body, a second circular through-channel body, a flow guide tube body, a first circular through-channel cover body, a second circular through-channel cover body and a flow guide tube cover body, wherein the first circular through-channel cover body, the second circular through-channel cover body and the flow guide tube cover body are all porous plates, the first circular through-channel cover body, the second circular through-channel cover body and the flow guide tube cover body are respectively matched with the first circular through-channel body, the second circular through-channel body and the flow guide tube body to form the first circular through-channel 12, the second circular through-channel 13 and the flow guide tube 14, that is, the first circular through-channel 12, the second circular through-channel 13 and the flow guide tube 14 are all of split structure, that is, the upper surface and the other components are of split structure, the upper surfaces are all perforated plates 3.

Specifically, in order to enable the gas-water mixture to be sprayed out in a spraying manner and further improve the combination effect with the concentrate, the through holes in the porous plate are conical holes, the diameter of the conical hole close to the tailing discharge pipe 11 is 0.5mm, the diameter of the conical hole far away from the tailing discharge pipe 11 is 1mm, the depth of each through hole is 1-5 mm, and preferably, the depth of each through hole is 1.5 mm.

It should be noted that, in order to ensure that the ore pulp has enough space and can fall and deposit quickly, the number of the draft tubes 14 should not be too much, preferably, the number of the draft tubes 14 is 4, and 4 draft tubes 14 are uniformly distributed along the outer side surface of the second circular through channel (the connecting line of the 4 draft tubes 14 is in a cross shape), that is, the first circular through channel 12 is connected with the second circular through channel 13 through a cross through channel (draft tube).

Considering that the outer diameter of the first circular through-channel 12 is too long, for example, when the outer diameter D1 of the first circular through-channel 12 is equal to the inner diameter D2 of the hydraulic flotation machine 2, a part of coarse tailings can be trapped at the contact edge of the column of the hydraulic flotation machine 2 and the first circular through-channel 12, which is not beneficial to the discharge of tailings and the normal operation of equipment; when the outer diameter D1 of the first circular through channel 12 is too small, the bubbles are unevenly distributed on the cross section of the cylinder of the hydraulic flotation machine 2, so that the particles falling at the edge of the hydraulic flotation machine 2 cannot collide and adhere to the bubbles, and the mineralization degree and the separation effect are reduced; therefore, the outer diameter D1 of the first circular channel 12 is controlled to be smaller than the inner diameter D2 of the hydraulic flotation machine 2, preferably, D1 is 5/7D 2.

Specifically, the bottom of the tailing tank is provided with an ore pulp concentration sensor 9, the ore pulp concentration sensor 9 is connected with an external congestion sensing control box 8, and the congestion sensing control box 8 is connected with the lifting device 1. The ore pulp concentration sensor 9 can transmit ore pulp concentration information to the congestion sensing control box 8; the congestion sensing control box 8 transmits control information to the lifting device 1, and the lifting device 1 controls the congestion dredging mechanism to work.

The congestion dredging mechanism is located right above the center of the second circular through channel 13, and the conical tip of the striker head 6 coincides with the axial line of the second circular through channel 13 and the axial line of the tailing discharging pipe 11. When the coaxial arrangement can ensure implementation, the collision needle head 6 can collide the position blocked at the bottom of the tailing tank through the center of the second circular through channel 13, so that the blocking objects are loosened and dredged.

Specifically, the tailing discharging pipe 11 is provided with a tailing regulating electromagnetic valve 10, and when the congestion dredging mechanism dredges the tailing congested minerals, the tailing regulating electromagnetic valve 10 opens a tailing valve in a coordinated mode, so that the congested minerals are dredged and discharged in time.

In order to ensure that the striker head 6 can smoothly pass through the center of the second circular through channel 13 and does not collide with the second circular through channel 13, the inner diameter of the second circular through channel 13 is controlled to be 1.4-1.8 times of the diameter of the striker rod 5.

The length of the striker rod 5 and the specifications of the striker head 6 may be selected according to the height of the hydro flotation device and the specifications of the tailings pipe. Preferably, the length of the plunger 5 can be adjusted, the plunger 5 is composed of a plurality of hollow corrosion-resistant metal rods, when no congestion occurs, the plunger is in a state of retracting into the lifting device, the flotation process in the hydraulic flotation machine is not interfered, when the congestion is monitored, the plunger 5 starts to lift up and down, and rotates in a self-rotating mode to impact the tailing congestion position for dredging.

In order to prolong the service life of the congestion relief mechanism, the material of the plunger 5 and the plunger 6 should have high corrosion resistance, and for example, the plunger 5 and the plunger 6 are made of corrosion-resistant alloy materials NS111 to NS 113.

When in implementation, the dredging method of the hydraulic flotation equipment comprises the following steps:

step 1, an ore pulp concentration sensor 9 at the bottom of a hydraulic flotation machine 2 monitors the ore pulp concentration at the bottom of a tailing tank and transmits ore pulp concentration information to a congestion sensing control box 8;

and 2, transmitting control information to the lifting device 1 by the congestion sensing control box 8, and controlling the movement and the self-rotating rotation of the striker rod 5 and the striker head 6 of the congestion dredging mechanism by the lifting device 1 to dredge at the congestion position.

Specifically, in the step 2, when the concentration of the ore pulp is higher than the set concentration of the ore pulp, the jam sensing control box 8 transmits the opening control information to the lifting device 1, and after the lifting device 1 receives the opening control information, the jam dredging mechanism is adjusted to have a certain autorotation speed and a certain up-down moving speed, so that the striker 6 passes through the center of the channel 13 through the second circular ring, the striker rod 5 and the striker 6 move to reach the jammed position and strike the jammed position at the bottom of the tailing tank to loosen and dredge the blocking objects; when the ore pulp concentration at the jam position is reduced to reach a normal value, the ore pulp concentration sensor 9 transmits the stop control information to the jam sensing control box 8, the jam sensing control box 8 transmits the stop control information to the lifting device 1, and the lifting device 1 adjusts the striker rod and the striker head to restore the original state.

Compared with the prior art, the hydraulic flotation equipment has the advantages that the annular cavitation device and the congestion dredging mechanism are coordinated and matched, in the separation process, the annular cavitation device injects water-air mixture from the periphery to the inside, the water injection is uniform and rapid, the existing cavitation device injecting water from the bottom is replaced, a space is vacated for a striker to dredge the congestion movement path of the tailings, and the congestion dredging mechanism can reach the congestion position through the annular cavitation device to effectively and timely dredge the congested tailings; meanwhile, the annular cavitation device can generate uniform small bubbles, and the separation efficiency and the separation effect can be improved.

The congestion dredging mechanism of the hydraulic flotation equipment comprises the striker rod and the striker head, and the striker head is used for dredging congested tailings, so that the effect of efficiently and quickly dredging the congested tailings is achieved.

The detachable connection of the striking pin rod and the striking pin head ensures that the striking pin head can be replaced in time after being worn after long-term use, the striking pin rod does not need to be replaced, and the cost is reduced.