CN215219515U - Automatic control device for underflow output concentration of thickener - Google Patents
Automatic control device for underflow output concentration of thickener Download PDFInfo
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- CN215219515U CN215219515U CN202121165752.5U CN202121165752U CN215219515U CN 215219515 U CN215219515 U CN 215219515U CN 202121165752 U CN202121165752 U CN 202121165752U CN 215219515 U CN215219515 U CN 215219515U
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Abstract
The utility model belongs to the technical field of automatic observing and controlling, especially, relate to an automatic control device of concentrated quick-witted underflow output concentration, its characterized in that includes main control unit, industrial computer and the site controller that is connected with this main control unit, moisturizing pump converter, underflow pump converter, big well concentration detection device, pipeline pressure detection device and the slide valve electric actuator that are connected with this site controller respectively. The utility model discloses an automatic control device of concentrated quick-witted underflow output concentration can realize the accurate control of concentration for satisfying the operating mode requirement in present stage, effectively prevents the maloperation and the equipment accident that leads to takes place.
Description
Technical Field
The utility model belongs to the technical field of automatic observing and controlling, especially, relate to an automatic control device of concentrated quick-witted underflow output concentration.
Background
In the mineral separation process, because the concentration of the underflow of the thickener is too high, the ore discharge is difficult and even the accident of pressing a large well is easily caused. Therefore, if the ore pulp concentration can be detected and controlled, the ore pulp can be conveyed within a certain range, the ore dressing process can be optimized, the economic operation of ore pulp conveying is ensured, the equipment accident rate can be reduced, and the occurrence of serious accidents such as large well pressing is avoided.
Disclosure of Invention
The utility model aims at providing a concentrate underflow output concentration's automatic control device according to concentrate concentration detection data, through the change of concentration, increases or reduces the ore discharge volume to reduce or increase and advance ore deposit slide valve aperture, increase or reduce the feedwater volume, thereby guarantee the proportion of concentrate in the big well at the best concentration value scope.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses an automatic control device of concentrated quick-witted underflow output concentration, its characterized in that includes main control unit, industrial computer and the site controller that is connected with this main control unit, moisturizing pump converter, underflow pump converter, big well concentration detection device, pipeline pressure detection device and slide valve electric actuator that are connected with this site controller respectively.
The main controller is provided with a touch screen.
The utility model has the advantages that:
the utility model discloses an automatic control device of concentrated quick-witted underflow output concentration can realize the accurate control of concentration for satisfying the operating mode requirement in present stage, effectively prevents the maloperation and the equipment accident that leads to takes place.
Drawings
Fig. 1 is a flow chart of concentration control according to the present invention.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in figure 1, the utility model discloses an automatic control device of concentrated quick-witted underflow output concentration, its characterized in that includes main control unit, industrial computer and the site controller that is connected with this main control unit, moisturizing pump converter, underflow pump converter, big well concentration detection device, pipeline pressure detection device and the slide valve electric actuator that are connected with this site controller respectively.
The main controller is provided with a touch screen.
Firstly, setting an optimal value of the concentration in the large well, when the concentration of the large well is higher than the set concentration, increasing the frequency of a frequency converter of a bottom flow pump of the large well, increasing the ore discharge amount, simultaneously, reducing the opening of an ore feeding gate valve by giving the concentration value to an actuator, reducing the ore feeding amount, increasing the frequency of a frequency converter of a water replenishing pump, increasing the water feeding amount, reducing the concentration of the concentrate of the large well, and keeping the concentration of the concentrate of the large well to be reduced to the set value. The frequency of the frequency converter is limited by the upper limit value of the pressure value of the ore discharge pipeline, so that pipeline damage caused by overhigh pipeline pressure is prevented. When the concentration of the big well is lower than the concentration of the set value, the frequency of a frequency converter of the big well bottom flow pump is reduced, the ore discharge amount is reduced, meanwhile, the opening degree of a gate valve is increased, the ore feeding amount is increased, the frequency of a water supply frequency converter is reduced, the water supply amount is reduced, the concentration of the concentrate amount of the big well is increased, and the concentrate amount returns to the optimal set value again.
The specific implementation process comprises the following steps:
1. and a plurality of sampling signals on site enter a site controller, and an effective average value is taken as a site actual signal value after the signals are screened.
2. And comparing the actual signal value with the set value through the PID module, wherein the larger the deviation value is, the faster the adjustment speed is. The frequencies of the underflow pump frequency converter and the water replenishing pump frequency converter are controlled through the PLC, and the opening degree of the electric valve is controlled.
3. When the concentration of the large well is in the optimal value range, the frequency converter of the underflow pump and the frequency converter of the water replenishing pump operate at a stable frequency, the gate valve is stabilized at an opening, and the ore discharge amount, the ore feeding amount and the water replenishing amount are in a relatively stable and balanced state.
4. When the concentration of the large well is smaller than the minimum value in the optimal value range, the set value-actual value = positive number, the field controller reduces the frequency of the frequency converter of the underflow pump and the frequency converter of the water replenishing pump through PID adjustment, reduces the ore discharge amount and the water replenishing amount, and meanwhile increases the opening degree of the gate valve for the electric actuator signal of the gate valve and increases the ore feeding amount. The concentrate quantity is increased, the water supply is reduced, the concentration of the large well is increased, and the ore discharge quantity is reduced so as to improve the efficiency.
5. When the concentration of the large well is larger than the maximum value of the optimal value range, the set value-actual value = negative number, the controller sends a command to adjust and increase the frequency of the frequency converter of the underflow pump and the frequency converter of the water replenishing pump, increase the ore discharge amount and the water replenishing amount, and simultaneously reduce the opening of the gate valve and reduce the ore feeding amount. The amount of concentrate is reduced, the amount of water supplement is increased, and the concentration of the large well is reduced. When the ore discharge amount is increased, if the pressure value of the pipeline reaches an alarm value, the controller stops adjusting the operation of a PID module of the underflow pump frequency converter, reduces the on-site operation frequency of the underflow pump frequency converter by 3HZ, then sends a signal to the underflow pump frequency converter again, if the pressure value is still greater than the alarm value after 10S, reduces the 3HZ again, then sends the signal to the frequency converter, and enables the frequency converter to reduce the frequency until the pressure value is smaller than the alarm value.
The utility model discloses an automatic control device of concentrated quick-witted underflow output concentration can realize the accurate control of concentration for satisfying the operating mode requirement in present stage, effectively prevents the maloperation and the equipment accident that leads to takes place.
Claims (2)
1. The automatic control device for the underflow output concentration of the thickener is characterized by comprising a main controller, an industrial personal computer and a field controller which are connected with the main controller, and a water replenishing pump frequency converter, an underflow pump frequency converter, a large well concentration detection device, a pipeline pressure detection device and a gate valve electric actuator which are respectively connected with the field controller.
2. The automatic control device of the underflow output concentration of the thickener according to claim 1, wherein said main controller is provided with a touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121165752.5U CN215219515U (en) | 2021-05-28 | 2021-05-28 | Automatic control device for underflow output concentration of thickener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121165752.5U CN215219515U (en) | 2021-05-28 | 2021-05-28 | Automatic control device for underflow output concentration of thickener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215219515U true CN215219515U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121165752.5U Active CN215219515U (en) | 2021-05-28 | 2021-05-28 | Automatic control device for underflow output concentration of thickener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215219515U (en) |
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2021
- 2021-05-28 CN CN202121165752.5U patent/CN215219515U/en active Active
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