Flotation column
The present invention is the divisional application of patent of invention " a kind of high reliability flotation column ", and the applying date of original application is on April 11st, 2014, and the application number of original application is 2014101442108, and the invention and created name of original application is " a kind of high reliability flotation column ".
Technical field
The application relates to the equipment in a kind of flotation field, is specifically related to a kind of flotation column with two set inflatable structures.
Background technology
Flotation column has been the conventional equipment in flotation field, flotation column is generally of middling cycle structure, the chats of not fully flotation is inflated in return flotation column by middling cycle structure again, existing middling cycle structure is wished more uniform by ore pulp distribution, therefore more return pipe is adopted, but too much return pipe branch causes that the diameter of pipe is less thus being adapted to the back amount of chats, and return pipe clogging inevitably occurs.
Return pipe is overcome to block currently without particularly effective technical scheme, first, return pipe is blocked in floatation process and is difficult to discovery, because flotation column is for closing space, there is substantial amounts of overflow foam at overfall place, these factors result in the blocking being difficult to find return pipe;On the other hand, even if being found that blocking is dredged also without good way, can only be shutdown maintenance.But the ore pulp not sorted completely in flotation column can only stop flotation and drain, this wastes the mineral resources of preciousness undoubtedly.
Summary of the invention
It is an object of the invention to provide the flotation column of a kind of high reliability, solve the problem of return pipe blocking in aforesaid prior art.
The present invention realizes by the following method, a kind of high reliability flotation column, it includes the import of feeding, the ore discharge outlet of bottom, flotation column bottom has chats collection portion, chats collection portion is connected with allotter, and allotter is connected to flotation column by multiple return pipes, and the interface of return pipe and flotation column is positioned at the top in chats collection portion.
Being more preferably, the middle ore pulp of flotation column is collected after converging and is sent by pumping to mode selection part by chats collection portion, and mode selection part is connected with allotter.
It is more preferably, the feeding end of mode selection part is connected with pump, discharge end is connected with allotter, being provided with switching construction in mode selection part, switching construction has two land, respectively the first land and the second land, the diameter of the first land is less than the second land diameter, the shell of mode selection part is divided into minor diameter and major diameter portion, and these two parts distinguish corresponding first land and the second land, and the center of switching construction also has the passage that in confession, ore pulp flows through;Chamber between first land and feeding end is the first chamber, and the chamber between two land is the second chamber, and the chamber of the second land and discharge end is the 3rd chamber;Being provided with stopper section between second land and discharge end, this stopper section determines the minimum space in the 3rd chamber;Mode selection part is also associated with charging portion, pressure-sensing portion and muffler, and switching construction has two positions in mode selection part, and when primary importance, charging portion, pressure-sensing portion are connected with the first chamber, and muffler and the second chamber are connected;During the second position, charging portion, pressure-sensing portion and muffler are all connected with the second chamber;Muffler is connected with jet plate.
It is more preferably, flotation column is when normal operation, return pipe feed back is smooth and easy, pump sends into mode selection part after being pressurizeed by middle ore pulp, and in mode selection part, middle ore pulp flows through from switching construction central passage and exits into allotter from discharge end, switching construction is pushed to primary importance, charging portion supplies to middle ore pulp, pressure-sensing portion be in pressured state, muffler and the second chamber be connected be in idle state.
Being more preferably, when at least one in return pipe is blocked, the middle ore pulp discharge of discharge end is not smooth, at this moment in discharge end, pressure increases, switching construction is pushed away by middle ore pulp to feeding end, and switching construction is finally stable in the second position, the second land jointly coordinate location with minor diameter;Charging portion, pressure-sensing portion and muffler are all connected with the second chamber, charging portion the gases at high pressure of confession be directly entered muffler, and penetrate from jet plate, flotation column is made to work on until the flotation of ore pulp in flotation column separates complete, and pressurized force value decline in pressure-sensing portion is triggered, this status signal is reached main control computer.
It is more preferably, main control computer is after obtaining the blocked signal sent in pressure-sensing portion, instruction is sent to pump, it is made to improve pumping pressure, and pump is worked one scheduled time of maintenance at this pressure, pumping pressure drops to initial pressure afterwards, in this predetermined time, switching construction is pushed to primary importance from the second position, but its state is unstable, overall flotation column erratic switching in both modes, through repeatedly such boosting, after the step of blood pressure lowering, the force value of main control computer measuring pressure detecting part again, if its pressure rises to and stablizes in original state, then illustrate that switching construction has been returned to primary importance, what the blocking of return pipe 5 obtained solves or is affected to be down in acceptable scope.
Being more preferably, the control of pump is pulsed buck by main control computer.
Beneficial effect:
1) the present patent application employs mode selection part, having switching construction in mode selection part, the duty of flotation column is monitored by this structure better, is not only able to find the blocking of return pipe, can also be automatically switched the flotation pattern of flotation column, improves the reliability of flotation column;
2) main control computer of the flotation column of the application is by the control of the pumping pressure to pump, boosting repeatedly and blood pressure lowering, block part is impacted, no matter and flotation column in the flrst mode or can be carried out flotation in the second pattern, thus realize online block part is being processed.
Accompanying drawing explanation
Fig. 1 is flotation column structural representation of the present invention.
Fig. 2 is the first state of mode selection part.
Fig. 3 is the second state of mode selection part.
In figure: 1, flotation column;2, import;3, allotter;4, overfall;5, return pipe;6, jet plate;7, chats collection portion;8, tunable pump;9, mode selection part;10, charging portion;11, pressure-sensing portion;12, the first chamber;13, the second chamber;14, the 3rd chamber;15, feeding end;16, discharge end;17, the first land;18, the second land.
Detailed description of the invention
As shown in Figure 1, flotation column 1 includes the import of feeding, ore discharge outlet (not providing accompanying drawing labelling) of bottom, flotation column bottom has chats collection portion 7, the middle ore pulp of flotation column is collected after converging and is delivered to mode selection part 9 by pump 8 by chats collection portion 7, and mode selection part 9 is connected with allotter 3, and middle ore pulp uniformly enters each return pipe through the distributional effects of allotter 3, and the interface returning to flotation column 1, return pipe and flotation column 1 is positioned at the top in chats collection portion 7.
Can know from Fig. 2, the feeding end 15 of mode selection part 9 is connected with pump 8, discharge end 16 is connected with allotter 3, the switching construction of mode selection part 9 has two land, respectively the first land 17 and the second land 18, the diameter of the first land 17 is less than the second land diameter 18, and the shell of mode selection part 9 is divided into minor diameter and major diameter portion, these two parts distinguish corresponding first land 17 and the second land 18, and the center of switching construction also has the passage that in confession, ore pulp flows through.Chamber between first land 17 and feeding end 15 is the first chamber 12, and the chamber between two land is the second chamber, and the chamber of the second land 18 and discharge end 16 is the 3rd chamber 14.Second land 18 can by minor diameter backstop, but without propping up to the right discharge end 16 so that the 3rd chamber thoroughly disappears, optional specific embodiment is be provided with stopper section between the second land 18 and discharge end 16, and this stopper section determines the minimum space in the 3rd chamber 14.Mode selection part 9 is also associated with charging portion 10, pressure-sensing portion 11 and muffler, and switching construction has two positions in mode selection part 9, and during primary importance, charging portion 10, pressure-sensing portion 11 are connected with the first chamber 12, and muffler and the second chamber 13 are connected;During the second position, charging portion 10, pressure-sensing portion 11 and muffler are all connected with the second chamber 13.
Operation principle is explained as follows: flotation column 1 is when normal operation, return pipe feed back is smooth and easy, pump 8 sends into mode selection part 9 after being pressurizeed by middle ore pulp, in mode selection part 9, middle ore pulp flows through from switching construction central passage and exits into allotter 3 from discharge end 16, due to the fluid pressure effect in middle slurry ore deposit, switching construction is pushed to primary importance, charging portion 10 supplies to middle ore pulp, and pressure-sensing portion 11 is in pressured state, and muffler and the second chamber 13 are connected and are in idle state.
When at least one in return pipe is blocked, the middle ore pulp discharge of discharge end 16 is not smooth, and at this moment in discharge end 16, pressure increases, and switching construction is pushed away by middle ore pulp to feeding end 15, and switching construction is finally stable in the second position, the second land 18 jointly coordinate location with minor diameter.At this moment, charging portion 10, pressure-sensing portion 11 and muffler are all connected with the second chamber 13, the gases at high pressure of 10 confessions of charging portion are directly entered muffler, and penetrate from jet plate 6, flotation column is made to work on until the flotation of ore pulp in flotation column separates complete, and pressurized force value decline in pressure-sensing portion 11 is triggered, this status signal is reached main control computer and reminds operator to note.
So, by mode selection part 9, making flotation column can carry out floating operation in both modes, when return pipe is blocked, flotation column automatically switches to the second pattern, makes the flotation of flotation column carry out completely, embodying higher reliability.
nullFurther,Flotation column is not also shut down the blocking to return pipe 5 and is carried out cleaning and propose creationary solution by the application online,Specific as follows,Main control computer is after the signal obtaining pressure-sensing portion 11,Confirm that at least one return pipe is blocked,Then instruction is sent to pump 8,It is made to improve pumping pressure,And pump 8 is worked one scheduled time of maintenance at this pressure,Pumping pressure drops to initial pressure afterwards,In this predetermined time,Switching construction is pushed to primary importance from the second position,But its state is unstable,Overall flotation column erratic switching in both modes,But regardless of which kind of pattern,The operation of flotation is all carrying out always,Through repeatedly such boosting、After the step of blood pressure lowering,The force value of main control computer measuring pressure detecting part 11 again,If its pressure rises to and stablizes in original state,Then illustrate that switching construction has been returned to primary importance,What the blocking of return pipe 5 obtained solves or is affected to be down in acceptable scope.Preferred mode is, the control of pump 8 is pulsed buck by main control computer.
Although the disclosed high reliability flotation column related to being particularly described with reference to embodiment; embodiments described above is illustrative and not restrictive; without departing from the present invention, all of change and modifications all within protection scope of the present invention.