CN214288808U

CN214288808U - Adjusting device of flotation cell ore pulp liquid level

Info

Publication number: CN214288808U
Application number: CN202023343256.2U
Authority: CN
Inventors: 丁犇; 化雪荟; 赵雪章
Original assignee: Foshan Polytechnic
Current assignee: Foshan Polytechnic
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-28
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an adjusting device of flotation cell ore pulp liquid level belongs to ore dressing technical field to solve among the prior art problem that manual operation control large capacity flotation cell ore pulp liquid level is inaccurate and have the potential safety hazard. The device for adjusting the ore pulp liquid level of the flotation tank comprises a liquid level measuring device, a control device, a first straight-stroke electric actuator, a water inlet valve and an intermediate chamber. The liquid level measuring device comprises a magnetic float liquid level meter and a guide pipe, and the liquid level detection precision can be improved. The magnetic float level meter is internally provided with a liquid level transmitter which linearly transmits a liquid level signal to the control device, the control device converts the collected data information into an adjusting signal, and the opening of the water inlet valve is controlled by the first straight-stroke electric actuator, so that the aim of accurately controlling the pulp liquid level of the flotation tank is fulfilled, and the production safety and the metal recovery rate in the selection process are improved.

Description

Adjusting device of flotation cell ore pulp liquid level

Technical Field

The utility model relates to a liquid level control field, in particular to adjusting device of flotation cell ore pulp liquid level.

Background

At present, in the flotation process of the factory selection in China, the control of the pulp liquid level of a flotation tank is manually operated. Workers adjust the size of the water inlet valve according to the level of the pulp liquid in the flotation tank, so that the level of the pulp in the flotation tank is kept in a proper range, a scraper is convenient to collect foams, and the flotation operation is stabilized. During long-term use, it was found that controlling the liquid level of the flotation cell by manual operation has the following drawbacks: 1. the water inlet valve is generally arranged in the middle of the width of the flotation tank, and for the flotation tank with larger capacity, the hidden danger of the manual adjustment of the water inlet valve to the life safety of workers exists; 2. the control of the water inlet valve determines the height of the pulp liquid level of the flotation tank, and the adjustment is carried out only by the experience of workers, so that the scraping plate is easy to cause 'under-scraping' or 'over-scraping' on a foam layer, and the effective recovery of metal is not facilitated.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the weak point of above-mentioned prior art, the utility model aims at providing an adjusting device of flotation cell ore pulp liquid level aims at solving the unsafe problem of manual operation control large capacity flotation cell ore pulp liquid level among the prior art.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a device for adjusting the ore pulp liquid level of a flotation tank comprises a liquid level measuring device, a control device, a first straight-stroke electric actuator, a water inlet valve and an intermediate chamber; the liquid level measuring device and the first direct stroke type electric actuator are respectively electrically connected with the control device; the first straight-stroke electric actuator is connected with the water inlet valve and used for driving the water inlet valve to be opened and closed.

The device for adjusting the pulp liquid level of the flotation tank comprises a magnetic float level meter and a flotation tank cross arm, wherein the magnetic float level meter is fixed on the flotation tank cross arm, and the flotation tank cross arm is arranged above the flotation tank and spans across the flotation tank, so that the magnetic float level meter is positioned in the middle of the flotation tank.

The adjusting device for the pulp liquid level of the flotation tank is characterized in that a liquid level transmitter is arranged inside the magnetic float liquid level meter.

The adjusting device for the pulp liquid level of the flotation tank is characterized in that a guide pipe is arranged on the periphery of the lower portion of the magnetic float liquid level meter, and the guide pipe is arranged below a cross arm of the flotation tank.

The device for adjusting the pulp liquid level of the flotation tank is characterized in that the lower part of the magnetic float liquid level meter comprises a floater, and the density of the floater is greater than the pulp foam density.

The utility model provides an adjusting device of flotation cell ore pulp liquid level, wherein, the liquid level measurement device still includes the scavenge pipe, the scavenge pipe passes the stand pipe wall, and its delivery port is located stand pipe inner chamber upper portion, the scavenge pipe spray regime can cover the stand pipe inner chamber that is located its below.

The adjusting device for the ore pulp liquid level of the flotation tank further comprises a foam sensor and an alarm, wherein the foam sensor and the alarm are respectively and electrically connected with the control device.

The adjusting device for the pulp liquid level of the flotation tank further comprises a water pump, wherein the water pump is connected with a water pipe, and a water inlet of the water pump is formed in the bottom of the flotation tank and used for enabling pulp to flow back to the middle chamber.

The adjusting device for the ore pulp liquid level of the flotation tank further comprises a water outlet valve and a second straight-stroke electric actuator, wherein the second straight-stroke electric actuator is connected with the water outlet valve and used for driving the water outlet valve to be opened and closed, and the second straight-stroke electric actuator is electrically connected with the control device.

Has the advantages that:

the utility model provides an adjusting device of flotation cell ore pulp liquid level, the adjusting device of flotation cell ore pulp liquid level feeds back ore pulp liquid level to controlling means through the liquid level survey device in real time, and controlling means adjusts the error of bringing according to the experience according to opening of liquid level height change control intermediate chamber valve, has avoided the workman, has improved the rate of recovery of the metal in the ore pulp essence. In addition, in the liquid level control of the large-capacity flotation tank, the potential safety hazard that workers easily fall into the flotation tank when manually adjusting the water inlet valve can be eliminated by using the adjusting device for the pulp liquid level of the flotation tank.

Drawings

Figure 1 is the utility model provides a flotation cell ore pulp liquid level's adjusting device's schematic structure diagram.

FIG. 2 is a schematic view showing the structure of the liquid level measuring apparatus.

Figure 3 is a control flow chart of a device for adjusting the pulp liquid level of a flotation tank.

Detailed Description

The utility model provides an adjusting device of flotation cell ore pulp liquid level, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the embodiment is lifted to follow with reference to the attached drawing the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 and 2, the present invention provides a device for adjusting the pulp liquid level in a flotation cell, which includes a liquid level measuring device 1, a control device 2, a first stroke type electric actuator 3, a water inlet valve 4 and an intermediate chamber 5; the liquid level measuring device 1 is connected with the control device 2; the first straight-stroke electric actuator 3 is electrically connected with the control device 2, and the first straight-stroke electric actuator 3 is connected with the water inlet valve 4 and used for driving the water inlet valve to be opened and closed. The slurry flows from the intermediate chamber 5 into the flotation cell via the inlet valve 4. The liquid level measuring device 1 can transmit a liquid level signal to a processor of the control device 2 in real time, the control device 2 feeds back a liquid level height signal to the first direct stroke type electric actuator 3, when the liquid level height is close to a set value, the first direct stroke type electric actuator 3 controls the opening degree of the water inlet valve 4 to be gradually reduced, the water inlet amount is gradually reduced, the water level control is more accurate, and when the liquid level height reaches the set value, the first direct stroke type electric actuator 3 controls the water inlet valve 4 to be closed.

Further, the liquid level measuring device 1 comprises a magnetic float liquid level meter 11 and a cross arm 12 of the flotation tank, the magnetic float liquid level meter 11 is fixed on the cross arm 12 of the flotation tank, and the cross arm 12 of the flotation tank is arranged above the flotation tank and spans across the flotation tank, so that the magnetic float liquid level meter 11 is positioned in the middle of the flotation tank. In the water body, the liquid level fluctuation close to the edge of the flotation tank is larger than that of the middle part, so that the magnetic float liquid level meter 11 is arranged in the middle part of the flotation tank through the cross arm 12 of the flotation tank, and the liquid level height can be measured more accurately. The magnetic float level meter 11 is fixed by bolts, and can be conveniently disassembled for inspection and part replacement.

The magnetic float level meter 11 is internally provided with a level transmitter 111. The liquid level measuring device 1 transmits a liquid level signal to the control device 2 through the liquid level transmitter 111, and the control device 2 transmits an adjustment signal to the first direct-stroke electric actuator 3 after data processing.

The periphery of the lower part of the magnetic float liquid level meter 11 is provided with a guide pipe 13, and the guide pipe 13 is arranged below the cross arm 12 of the flotation tank. The guide pipe 13 can protect the lower part of the magnetic float liquid level meter 11 from disturbance of surrounding water flow, if the lower part of the magnetic float liquid level meter 11 swings back and forth and left and right due to surrounding liquid level fluctuation and water flow surging for a long time, the damage is easily caused, the guide pipe 13 enables the lower part of the magnetic float liquid level meter 11 to move up and down only along with the height of the liquid level in the pipe, the measuring accuracy is guaranteed, and the service life of a connecting rod at the lower part of the magnetic float liquid level meter 11 is prolonged. The guide tube 13 is made of thickened transparent plastic, and the condition of the inner cavity can be observed from the outside.

The lower portion of the magnetic float level gauge includes a float 112, and the density of the float 112 is greater than the pulp foam density. In the metal concentration process of the pulp, the pulp froth is entrained with a large amount of metal ore and has a relatively high density, and the density of the float 112 may be less than the density of the pulp froth, resulting in an inaccurate level of the liquid being measured. Thus, the use of a denser float 112 avoids this and results in accurate liquid level height data.

The liquid level measuring device 1 further comprises a cleaning pipe 14, the cleaning pipe 14 penetrates through the pipe wall of the guide pipe 13, and the spraying range of the cleaning pipe 14 can cover the inner cavity of the guide pipe 13 below the cleaning pipe. An operator can observe the conditions of the lower part of the magnetic float liquid level meter 11 in the inner cavity and the inner wall of the guide pipe 13 through the transparent guide pipe 13, the cleaning pipe 14 is opened according to actual needs, and the cleaning pipe 14 can jet high-pressure water to wash down foam and slurry attached to the lower part of the magnetic float liquid level meter 11 and the inner wall of the guide pipe 13.

The utility model provides a adjusting device of flotation cell ore pulp liquid level, still includes foam sensor 6 and alarm 7, foam sensor 6 and alarm 7 respectively with controlling means 2 electric connection. According to the foam height information conveyed by the foam sensor 6 and the ore pulp liquid level height information conveyed by the liquid level measuring device 1, the processor of the control device 2 can calculate the foam thickness, and an enterprise can adjust the ore pulp flotation process according to the foam thickness data to improve the concentration process. The alarm 7 is used for prompting a field operator that the adjusting device has a fault, when the liquid level or the foam height of the flotation tank exceeds a set value, the liquid level or the foam height continues to rise, the alarm 7 continuously sounds to prompt the operator to intervene, and the operator can switch to manual control to adjust the liquid level of the flotation tank. Another advantage of providing the foam sensor 6 is that when the detection signal of the liquid level measuring device 1 is incorrect, the obtained foam height information can be used as auxiliary data to determine whether the pulp level has exceeded the set value.

The utility model provides an adjusting device of flotation cell ore pulp liquid level, still includes water pump 8, water pump 8 is connected with the water pipe, and 8 water inlets of water pump set up in the flotation cell bottom for flow back the ore pulp to the intermediate chamber. When the liquid level of the ore pulp exceeds a set value, "over-scraping" occurs to influence the recovery rate of metals in the concentration, and after the water inlet valve 4 is closed, the water pump 7 can be started to enable the ore pulp in the flotation cell to flow back to the intermediate chamber 5, so that the liquid level of the flotation cell falls back to the set range.

The utility model provides an adjusting device of flotation cell ore pulp liquid level, still includes outlet valve 9 and second straight stroke formula electric actuator 10, second straight stroke formula electric actuator 10 is connected with outlet valve 9 for drive outlet valve 9 opens and closes, second straight stroke formula electric actuator and controlling means electric connection. After ore pulp concentration is finished, the control device 2 sends an adjusting command to the second straight-stroke type electric actuator 10, and the second straight-stroke type electric actuator 10 adjusts the opening of the water outlet valve 9 after receiving the command, so that ore pulp in the flotation tank is discharged. According to actual needs, an operator can also adjust the liquid level of the ore pulp in the flotation tank by manually controlling the water outlet valve 9.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims

1. A device for adjusting the ore pulp liquid level of a flotation tank is characterized by comprising a liquid level measuring device, a control device, a first straight-stroke electric actuator, a water inlet valve and an intermediate chamber; the liquid level measuring device and the first direct stroke type electric actuator are respectively electrically connected with the control device; the first straight-stroke electric actuator is connected with the water inlet valve and is used for driving the water inlet valve to be opened and closed; the liquid level measuring device comprises a magnetic float liquid level meter and a cross arm of the flotation tank, the magnetic float liquid level meter is fixed on the cross arm of the flotation tank, and the cross arm of the flotation tank is arranged above the flotation tank and spans across the flotation tank, so that the magnetic float liquid level meter is positioned in the middle of the flotation tank.

2. The device for regulating the pulp liquid level of the flotation tank according to claim 1, wherein a liquid level transmitter is arranged in the magnetic float level gauge.

3. The device for adjusting the pulp liquid level of the flotation tank is characterized in that a guide pipe is arranged on the periphery of the lower portion of the magnetic float liquid level meter, and the guide pipe is arranged below a cross arm of the flotation tank.

4. The device for regulating the pulp level of a flotation cell according to claim 3, wherein the lower part of the magnetic float level gauge comprises a float, the density of which is greater than the pulp froth density.

5. The device for regulating the pulp liquid level of the flotation tank according to claim 3, wherein the liquid level measuring device further comprises a cleaning pipe, the cleaning pipe penetrates through the wall of the guide pipe, the water outlet of the cleaning pipe is positioned at the upper part of the inner cavity of the guide pipe, and the spraying range of the cleaning pipe can cover the inner cavity of the guide pipe positioned below the cleaning pipe.

6. The device for regulating the pulp liquid level of the flotation tank according to claim 1, further comprising a foam sensor and an alarm, wherein the foam sensor and the alarm are respectively electrically connected with the control device.

7. The device for regulating the pulp level in a flotation cell according to claim 1, further comprising a water pump connected to the water pipe, the water pump having an inlet located at the bottom of the flotation cell for returning pulp to the intermediate chamber.

8. The device for regulating the slurry level in the flotation tank according to claim 1, further comprising a water outlet valve and a second linear electric actuator, wherein the second linear electric actuator is connected to the water outlet valve and used for driving the water outlet valve to open and close, and the second linear electric actuator is electrically connected to the control device.