CN210906529U - Dense medium density automatic regulating apparatus is selected separately to coal - Google Patents
Dense medium density automatic regulating apparatus is selected separately to coal Download PDFInfo
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- CN210906529U CN210906529U CN201921267122.1U CN201921267122U CN210906529U CN 210906529 U CN210906529 U CN 210906529U CN 201921267122 U CN201921267122 U CN 201921267122U CN 210906529 U CN210906529 U CN 210906529U
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Abstract
The utility model discloses a dense medium density automatic regulating device for coal separation, which comprises a dense medium barrel, a qualified medium barrel, a dense medium separating device, a shunt box and a controller which are connected with the controller, and also comprises a medium adding valve opening sensor, a shunt valve opening sensor and a water replenishing valve opening sensor which are connected with the controller; the density of the qualified medium and the barrel position of the medium-containing barrel are monitored in real time through the qualified medium density detection device and the medium-containing barrel position detection device, the measurement result is conveyed to the controller, and the controller controls the opening degrees of the medium adding valve, the flow dividing valve and the water replenishing valve, so that the accurate and automatic control of a density system is realized. The system after coal preparation plant uses, can shorten the density stability time of having surveyed, guarantee the stability of qualified medium liquid density, improve the clean coal rate of recovery, reduce intensity of labour, reach the purpose of reducing in the waste rock coal charge and unmanned on duty.
Description
Technical Field
The utility model belongs to the technical field of coal washing selects, concretely relates to coal selects separately dense medium density automatic regulating apparatus.
Background
With the continuous expansion of the production capacity of coal preparation plants, the large-scale equipment and the improvement of the complexity of the system, the requirements on automation technology and sensing systems are higher and higher. After the single machine automation of the equipment is realized, the foreign automatic coal separation technology is currently developed towards the direction of system automation and factory automation. Most foreign coal preparation plants have higher management level, more stable raw coal quality, strictly controlled washing quantity, stable operation of each process link, basically no leakage phenomenon, good production system condition and small change, so the realization of automation is relatively easy, and the condition of the system of the coal preparation plant in China is complicated. Researchers in China also do a lot of work in the aspect of automation of coal preparation plants, and the automation technology of the coal preparation plants in China roughly goes through three stages of relay logic control, program control of conductor elements and small-scale digital integrated circuits and PLC control. The automation of the coal preparation plant is not limited to the control of the production process, but plays a role in production management, and in the information era, the production management systems of industrial enterprises such as the coal preparation plant and the like are gradually developed towards networking, informatization and intellectualization. At present, the application of the automation technology of the domestic coal preparation plant is mainly embodied in the aspects of centralized control of equipment operation, monitoring and adjustment of process parameters, monitoring of the running state of the equipment and the like.
The centralized control of the equipment operation mainly comprises the operation of starting, stopping, accident stopping and centralized and local control conversion of the equipment of the coal preparation plant according to a preset flow. The process parameter monitoring and adjusting mainly monitors and adjusts the process parameters of the coal preparation plant according to the set value of the coal preparation index, heavy medium coal preparation is adopted in most of the coal preparation plant processes in China at present, the heavy medium index is mainly density adjustment of a coal preparation medium, for example, in the Chinese patent with the application number of 201621053343.5, the density monitoring method of the coal preparation medium generally adopts a density pot to manually carry out field actual measurement recording, and utilizes a radioactive source sensor to carry out online detection and a liquid difference sensor to carry out online detection. Due to the reasons that online measurement errors are large, radioactive sources are controlled strictly, the adjustment difficulty of a liquid difference sensor measurement technology is large and the like, most domestic coal preparation plants insist on using a manual field density pot for detection, then transmitting data to a control center after recording the data, starting an automatic density adjustment system by the control center for adjustment, and adopting automatic online detection in part of the coal preparation plants, but the detected data is only used as a reference for density adjustment, and the automatic density monitoring system does not automatically execute adjustment on the density adjustment according to density size information. Therefore, an accurate and stable dense medium density automatic regulating device is urgently needed by the coal preparation plant.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem of the unable accurate control dense medium density of coal preparation factory, and provide a dense medium density automatic regulating apparatus, make the dense medium density system of coal preparation factory realize stable, accurate and quick control.
The utility model provides a technical scheme that above-mentioned problem adopted is: an automatic dense medium density adjusting device for coal separation is characterized by comprising a dense medium barrel, a qualified medium barrel, a dense medium separating device, a flow distribution box and a controller, wherein the dense medium barrel, the qualified medium barrel, the dense medium separating device and the flow distribution box are all connected with the controller; a qualified medium density detection device is arranged on a qualified medium pipeline between the qualified medium barrel and the heavy medium sorting device and is connected with the controller; the qualified medium barrel is provided with a medium-combining barrel position detection device which is used for measuring the barrel position of the qualified medium barrel and is connected with the controller; the medium adding valve of the concentrated medium barrel is connected with a medium adding valve opening sensor, and the medium adding valve opening sensor is connected with the controller and used for accurately controlling the opening of the medium adding valve so as to control the addition amount of the medium; the shunt valve of the shunt box is connected with a shunt valve opening sensor which is connected with a controller and used for accurately controlling the opening of the shunt valve so as to control the shunt flow of the medium; the water replenishing valve of the qualified medium barrel is connected with a water replenishing valve opening sensor, and the water replenishing valve opening sensor is connected with the controller and used for accurately controlling the opening of the water replenishing valve so as to control the water replenishing amount.
Further, the dense medium barrel, the qualified medium barrel, the dense medium sorting device and the flow distribution box are connected in sequence.
The working method comprises the following steps: the density of the qualified medium and the barrel position of the medium-containing barrel are monitored in real time through the qualified medium density detection device and the medium-containing barrel position detection device, the measurement result is conveyed to the controller, and the controller controls the opening degrees of the medium adding valve, the flow dividing valve and the water replenishing valve, so that the accurate and automatic control of a density system is realized.
Compared with the prior art, the utility model, have following advantage and effect:
(1) the density measurement starting stabilization time is shortened, and the clean coal loss is reduced; the density is automatically adjusted, the dependence on post experience is reduced, and the density control operation is simpler and more convenient.
(2) The heavy medium sorting system is unattended, and the labor intensity is reduced.
(3) The product quality is stabilized, and the recovery rate of clean coal is improved.
(4) Realize moisturizing valve automatic switch, reduced manual intervention, reduce personnel's demand.
The system after coal preparation plant uses, can shorten the density stability time of having surveyed, guarantee the stability of qualified medium liquid density, improve the clean coal rate of recovery, reduce intensity of labour, reach the purpose of reducing in the waste rock coal charge and unmanned on duty.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the dense medium barrel comprises a dense medium barrel 1, a qualified medium barrel 2, a dense medium sorting device 3, a shunt box 4, a controller 5, a qualified medium density detection device 6, a medium combination barrel position detection device 7, a water replenishing valve opening sensor 8, a medium adding valve opening sensor 9 and a shunt valve opening sensor 10.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Example 1.
Referring to fig. 1, the automatic dense medium density adjusting device for coal separation in the embodiment includes a dense medium barrel 1, a qualified medium barrel 2, a dense medium separating device 3, a shunt box 4 and a controller 5, the dense medium barrel 1, the qualified medium barrel 2, the dense medium separating device 3 and the shunt box 4 are sequentially connected, and the dense medium barrel 1, the qualified medium barrel 2, the dense medium separating device 3 and the shunt box 4 are all connected with the controller 5; a qualified medium density detection device 6 is arranged on a qualified medium pipeline between the qualified medium barrel 2 and the dense medium sorting device 3, and the qualified medium density detection device 6 is connected with the controller 5; the qualified medium barrel 2 is provided with a medium-combining barrel position detection device 7 for measuring the barrel position of the qualified medium barrel 2, and the medium-combining barrel position detection device 7 is connected with the controller 5; the medium adding valve of the medium concentration barrel 1 is connected with a medium adding valve opening sensor 9, and the medium adding valve opening sensor 9 is connected with the controller 5 and used for accurately controlling the opening of the medium adding valve so as to control the adding amount of a medium; a shunt valve of the shunt box 4 is connected with a shunt valve opening sensor 10, and the shunt valve opening sensor 10 is connected with the controller 5 and used for accurately controlling the opening of the shunt valve so as to control the shunt amount of the medium; the water replenishing valve of the qualified medium barrel 2 is connected with a water replenishing valve opening sensor 8, and the water replenishing valve opening sensor 8 is connected with the controller 5 and used for accurately controlling the opening of the water replenishing valve so as to control the water replenishing amount.
The working method comprises the following steps: the automatic density adjusting device for the coal separation dense medium detects the density of the qualified medium and the barrel position of the medium combining barrel in real time, automatically sets a density target value of the qualified medium (replacing the traditional manual input) according to a detection result, determines to increase or decrease the density according to the difference value between a set value of the density and an instantaneous value of a densimeter, and closes the shunt valve when the instantaneous value of the density is larger than the set value, the instantaneous density is too high, the density needs to be decreased, the opening degree of the water replenishing valve needs to be increased; when the instantaneous value of the density is smaller than the set value, the instantaneous density is too low, the density needs to be increased, and the opening degree of a water replenishing valve needs to be reduced; when the opening of the water replenishing valve is reduced and the density requirement cannot be met, closing the water replenishing valve and opening the shunt valve for shunting; in addition, when the quality of the medium in the qualified medium barrel 2 is insufficient, the medium can be automatically supplemented, so that the stability of the liquid density of the qualified medium is ensured, the intelligent control of a density system is realized, and the aims of reducing the coal quantity in the gangue and unattended operation are finally fulfilled.
The controller 5, the qualified medium density detection device 6 and the joint medium barrel position detection device 7 all use the existing equipment, and belong to the existing mature technology.
Example 2.
Referring to fig. 2, the automatic dense medium density adjusting device for coal separation in the embodiment includes a qualified medium barrel 2, a dense medium separating device 3, a shunt box 4 and a controller 5, the qualified medium barrel 2, the dense medium separating device 3 and the shunt box 4 are connected in sequence, and the qualified medium barrel 2, the dense medium separating device 3 and the shunt box 4 are all connected with the controller 5; a qualified medium density detection device 6 is arranged on a qualified medium pipeline between the qualified medium barrel 2 and the dense medium sorting device 3, and the qualified medium density detection device 6 is connected with the controller 5; the qualified medium barrel 2 is provided with a medium-combining barrel position detection device 7 for measuring the barrel position of the qualified medium barrel 2, and the medium-combining barrel position detection device 7 is connected with the controller 5; a shunt valve of the shunt box 4 is connected with a shunt valve opening sensor 10, and the shunt valve opening sensor 10 is connected with the controller 5 and used for accurately controlling the opening of the shunt valve so as to control the shunt amount of the medium; the water replenishing valve of the qualified medium barrel 2 is connected with a water replenishing valve opening sensor 8, and the water replenishing valve opening sensor 8 is connected with the controller 5 and used for accurately controlling the opening of the water replenishing valve so as to control the water replenishing amount.
The working method comprises the following steps: the automatic density adjusting device for the coal separation dense medium detects the density of the qualified medium and the barrel position of the medium combining barrel in real time, automatically sets a density target value of the qualified medium (replacing the traditional manual input) according to a detection result, determines to increase or decrease the density according to the difference value between a set value of the density and an instantaneous value of a densimeter, and closes the shunt valve when the instantaneous value of the density is larger than the set value, the instantaneous density is too high, the density needs to be decreased, the opening degree of the water replenishing valve needs to be increased; when the instantaneous value of the density is smaller than the set value, the instantaneous density is too low, the density needs to be increased, and the opening degree of a water replenishing valve needs to be reduced; when the opening of the water replenishing valve is reduced and the density requirement cannot be met, the water replenishing valve is closed and the shunt valve is opened for shunting, so that the stability of the density of the qualified medium liquid is ensured, the intelligent control of a density system is realized, and the aims of reducing the coal quantity in the waste rock and unattended operation are finally fulfilled.
The controller 5, the qualified medium density detection device 6 and the joint medium barrel position detection device 7 all use the existing equipment, and belong to the existing mature technology.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (2)
1. An automatic dense medium density adjusting device for coal separation is characterized by comprising a dense medium barrel (1), a qualified medium barrel (2), a dense medium separating device (3), a flow distribution box (4) and a controller (5), wherein the dense medium barrel (1), the qualified medium barrel (2), the dense medium separating device (3) and the flow distribution box (4) are all connected with the controller (5); a qualified medium density detection device (6) is arranged on a qualified medium pipeline between the qualified medium barrel (2) and the dense medium sorting device (3), and the qualified medium density detection device (6) is connected with the controller (5); a medium combining barrel position detection device (7) is mounted on the qualified medium barrel (2) and used for measuring the barrel position of the qualified medium barrel (2), and the medium combining barrel position detection device (7) is connected with the controller (5); the medium adding valve of the concentrated medium barrel (1) is connected with a medium adding valve opening sensor (9), and the medium adding valve opening sensor (9) is connected with the controller (5) and used for accurately controlling the opening of the medium adding valve so as to control the addition amount of a medium; a shunt valve of the shunt box (4) is connected with a shunt valve opening sensor (10), and the shunt valve opening sensor (10) is connected with the controller (5) and used for accurately controlling the opening of the shunt valve so as to control the shunt amount of the medium; the water replenishing valve of the qualified medium barrel (2) is connected with a water replenishing valve opening sensor (8), and the water replenishing valve opening sensor (8) is connected with the controller (5) and used for accurately controlling the opening of the water replenishing valve so as to control the water replenishing amount.
2. The automatic dense medium density adjusting device for coal separation as claimed in claim 1, wherein the dense medium barrel (1), the qualified medium barrel (2), the dense medium separation device (3) and the diversion box (4) are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267122.1U CN210906529U (en) | 2019-08-07 | 2019-08-07 | Dense medium density automatic regulating apparatus is selected separately to coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921267122.1U CN210906529U (en) | 2019-08-07 | 2019-08-07 | Dense medium density automatic regulating apparatus is selected separately to coal |
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| CN210906529U true CN210906529U (en) | 2020-07-03 |
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| CN201921267122.1U Active CN210906529U (en) | 2019-08-07 | 2019-08-07 | Dense medium density automatic regulating apparatus is selected separately to coal |
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