Automatic medium allocation device for coal cleaning plant
By designing an automatic mediating device for coal washing plants, and using sensors and controllers to realize automatic control of media density, the problem of large fluctuations in the media density in the prior art is solved, and the stability of media density and production efficiency are improved.
Patent Information
- Application Number
- CN202421753976.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In the existing coal washing plants, the mediation process of heavy media relies on manual operations, resulting in large fluctuations in the medium density, increasing media consumption, and harsh working environment and poor stability, which makes it impossible to meet production needs in time.
An automatic distribution device for coal washing plants is designed, including a medium silo, a concentrated medium barrel, a water replenishing pipeline, a concentrated medium pump, a combined medium barrel and a combined medium pump. Automatic control is achieved through a liquid level sensor, a concentrated medium density sensor and a controller to ensure the stability of the medium density.
The stability of the medium density is achieved, the dielectric loss is reduced, manual operation is reduced, production efficiency is improved, and costs are reduced.
Smart Images
Figure CN222930984U_ABST
Abstract
Description
Technical Field:
[0001] The utility model relates to the technical field of coal washing and preparation equipment, in particular to an automatic medium distribution device for a coal washing plant. Background Art:
[0002] Heavy medium coal separation is an important coal separation method in current coal washing plants and also the main direction of coal washing development in the future. And heavy medium consumption is an important index in the management of heavy medium coal washing plants. In the all-heavy medium coal washing process, magnetite powder is often used as the heavy medium. The heavy medium is continuously lost as the system operates. Among them, due to the carrying of the heavy medium by coal, a part of the heavy medium is taken away by the product, and a part of the heavy medium is lost with the tailings water into the coal slime water system. Therefore, medium needs to be continuously added during the production process.
[0003] In the existing medium addition link, most rely on manual operation to flush the medium with a water pipe, that is, the operator directly flushes the medium into the pit with water and then pumps it into the concentrated medium barrel by a pump, and aerates and stirs in the concentrated medium barrel. The staff regularly detects the density of the medium in the combined medium barrel. When the density of the medium in the combined medium barrel drops to a certain value, the centralized control operator contacts the post worker at the concentrated medium barrel on site through intercom and starts the medium addition pump to add the concentrated medium into the combined medium barrel. It is very difficult to keep the density of the medium in the combined medium barrel stable within the required range through the above manual operation. Therefore, the density of the medium in the combined medium barrel fluctuates greatly, resulting in problems such as medium leakage during the coal washing process, which inevitably increases the medium consumption, requires a large amount of manpower and material resources, and has a poor working environment and poor stability of manual operation, unable to meet the production needs in time, and is not conducive to efficient coal washing. Content of the Utility Model:
[0004] The purpose of the utility model is to provide an automatic medium distribution device for a coal washing plant with a simple connection structure, which can greatly reduce the medium loss in the subsequent coal washing system and realizes remote automatic control.
[0005] The utility model is implemented by the following technical solutions: The purpose of this patent is to provide an automatic medium distribution device for a coal washing plant, which includes a medium bin, a concentrated medium barrel, a makeup water pipeline, a concentrated medium pump, a combined medium barrel and a combined medium pump; the discharge port of the medium bin is connected to the feed port of the concentrated medium barrel through a screw elevator; the water outlet end of the makeup water pipeline is communicated with the water inlet above the concentrated medium barrel, the liquid outlet at the bottom of the concentrated medium barrel is communicated with the liquid inlet of the concentrated medium pump through a pipeline, the liquid outlet of the concentrated medium pump is respectively communicated with the reflux port of the concentrated medium barrel and the liquid inlet of the combined medium barrel through a pipeline, and the liquid outlet of the combined medium barrel is communicated with the liquid inlet of the combined medium pump through a pipeline;
[0006] A liquid level sensor is arranged inside the concentrated medium barrel, an automatic water replenishing valve is arranged on the water replenishing pipeline, a concentrated medium density sensor and a control valve are sequentially arranged on the pipeline at the liquid outlet of the concentrated medium pump, a reflux valve is arranged on the connecting pipeline between the control valve and the reflux port of the concentrated medium barrel, and a switching valve is arranged on the connecting pipeline between the control valve and the liquid inlet of the combined medium barrel; a combined medium density sensor is arranged on the pipeline at the liquid outlet of the combined medium pump;
[0007] The signal output ends of the liquid level sensor, the concentrated medium density sensor and the combined medium density sensor are all connected to the signal input end of the controller through signals, and the signal output ends of the controller are respectively connected to the signal input ends of the screw elevator, the concentrated medium pump, the combined medium pump, the automatic water replenishing valve, the control valve, the reflux valve and the switching valve through signals.
[0008] Furthermore, it further includes a compressed air pipeline, and the air outlet end of the compressed air pipeline is communicated with the air inlet at the bottom of the concentrated medium barrel; an automatic inflation valve is arranged on the compressed air pipeline; the signal output end of the controller is connected to the signal input end of the automatic inflation valve through signals.
[0009] Furthermore, it further includes a vibration motor, and a vibration motor is fixedly arranged at the bottom of the medium bin, and the signal output end of the controller is connected to the signal input end of the vibration motor through signals.
[0010] Advantages of the present utility model: The connection structure of the present utility model is simple and easy to implement. By automatically controlling the processes of medium feeding, mixing and conveying, and using equipment such as a screw elevator, a concentrated medium pump, a liquid level sensor, and a concentrated medium density sensor to automatically configure the medium in the concentrated medium barrel, the labor intensity of workers can be reduced. At the same time, the density of the concentrated medium can be accurately configured. Furthermore, when the density of the medium in the combined medium barrel decreases, a certain concentration of concentrated medium can be stably replenished into the combined medium barrel, ensuring the stability of the medium density in the combined medium barrel, greatly reducing the medium loss in the subsequent coal washing system, realizing remote automatic control, ultimately reducing costs and improving production efficiency; at the same time, the number of workers is reduced and the labor cost is lowered. Description of the drawings:
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0013] Figure 2 It is a control schematic diagram of the present utility model.
[0014] Medium bin 1, concentrated medium barrel 2, make-up water pipeline 3, concentrated medium pump 4, combined medium barrel 5, combined medium pump 6, compressed air pipeline 7, screw elevator 8, automatic inflation valve 9, liquid level sensor 10, automatic make-up water valve 11, concentrated medium density sensor 12, control valve 13, reflux valve 14, on-off valve 15, combined medium density sensor 16, controller 17, vibration motor 18. Specific implementation method:
[0015] Embodiment: As Figure 1 shown, an automatic medium preparation device for a coal washing plant includes a medium bin 1, a concentrated medium barrel 2, a make-up water pipeline 3, a concentrated medium pump 4, a combined medium barrel 5, a combined medium pump 6, a compressed air pipeline 7 and a vibration motor 18; the discharge port of the medium bin 1 is connected to the feed port of the concentrated medium barrel 2 through a screw elevator 8; the water outlet end of the make-up water pipeline 3 is communicated with the water inlet above the concentrated medium barrel 2, the liquid outlet at the bottom of the concentrated medium barrel 2 is communicated with the liquid inlet of the concentrated medium pump 4 through a pipeline, the liquid outlet of the concentrated medium pump 4 is respectively communicated with the reflux port of the concentrated medium barrel 2 and the liquid inlet of the combined medium barrel 5 through pipelines, and the liquid outlet of the combined medium barrel 5 is communicated with the liquid inlet of the combined medium pump 6 through a pipeline; the air outlet end of the compressed air pipeline 7 is communicated with the air inlet at the bottom of the concentrated medium barrel 2; an automatic inflation valve 9 is arranged on the compressed air pipeline 7; a vibration motor 18 is fixedly arranged at the bottom of the medium bin 1.
[0016] A liquid level sensor 10 is arranged in the concentrated medium barrel 2, an automatic make-up water valve 11 is arranged on the make-up water pipeline 3, a concentrated medium density sensor 12 and a control valve 13 are successively arranged on the pipeline at the liquid outlet of the concentrated medium pump 4, a reflux valve 14 is arranged on the connecting pipeline between the control valve 13 and the reflux port of the concentrated medium barrel 2, and an on-off valve 15 is arranged on the connecting pipeline between the control valve 13 and the liquid inlet of the combined medium barrel 5; a combined medium density sensor 16 is arranged on the pipeline at the liquid outlet of the combined medium pump 6.
[0017] As Figure 2 shown, the signal output ends of the liquid level sensor 10, the concentrated medium density sensor 12 and the combined medium density sensor 16 are all connected to the signal input end of the controller 17 through signals, and the signal output of the controller 17 is respectively connected to the signal input ends of the screw elevator 8, the concentrated medium pump 4, the combined medium pump 6, the automatic make-up water valve 11, the control valve 13, the reflux valve 14, the on-off valve 15, the automatic inflation valve 9 and the vibration motor through signals.
[0018] Working principle:
[0019] First, pour the medium into the medium bin 1; then the controller 17 controls the automatic water replenishing valve 11 to open and replenish water into the concentrated medium tank 2. The liquid level sensor 10 monitors the liquid level in the concentrated medium tank 2 at all times and transmits the signal to the controller 17. When the liquid level reaches the set level, the controller 17 controls the automatic water replenishing valve 11 to close. Then, it controls the spiral elevator 8 and the vibration motor 18 to start and add the medium into the concentrated medium tank 2, and controls the control valve 13, the reflux valve 14, and the automatic air filling valve 9 to open, and starts the concentrated medium pump 4. The concentrated medium pump 4 circulates and stirs the medium in the concentrated medium tank 2. At the same time, compressed air is introduced into the bottom of the concentrated medium tank 2 to stir the medium liquid. The concentrated medium density sensor 12 monitors the density of the concentrated medium in the concentrated medium tank 2 at all times and transmits the signal to the controller 17. When the density reaches the set value, the controller 17 controls the spiral elevator 8 and the vibration motor 18 to stop, stops adding the medium into the concentrated medium tank 2, and after a 3-minute delay, the controller 17 controls the concentrated medium pump 4 to stop. The automatic air filling valve 9 always remains open and continuously introduces air into the concentrated medium tank 2 for stirring. The combined medium density sensor 16 monitors the density of the medium discharged from the combined medium tank 5 at all times and transmits the signal to the controller 17. When the density of the medium discharged from the combined medium tank 5 is lower than the set value, the controller 17 first controls the concentrated medium pump 4 to start, so that the concentrated medium in the concentrated medium tank 2 returns to the concentrated medium tank 2 through the concentrated medium pump 4 for circulation for 2 minutes. Then, it controls the switch valve 15 to open and the reflux valve 14 to close to supply the concentrated medium to the combined medium tank 5. When the density of the medium discharged from the combined medium tank 5 reaches the set value, the controller 17 controls the concentrated medium pump 4 to close, and then controls the control valve 13, the switch valve 15, and the automatic air filling valve 9 to close, completing the replenishment of the combined medium tank 5 with the medium. After that, repeat the above process to automatically prepare the medium in the concentrated medium tank 2 again.
[0020] The connection structure of the present utility model is simple and easy to implement. By automatically controlling the processes of medium feeding, mixing, and conveying, and using devices such as the spiral elevator 8, the concentrated medium pump 4, the liquid level sensor 10, and the concentrated medium density sensor 12 to automatically configure the medium in the concentrated medium tank 2, it can reduce the labor intensity of workers. At the same time, it can accurately configure the density of the concentrated medium. Furthermore, when the density of the medium in the combined medium tank 5 decreases, the concentrated medium with a certain concentration is stably replenished into the combined medium tank 5, ensuring the stability of the density of the medium in the combined medium tank 5. It can greatly reduce the medium loss in the subsequent coal washing system, realize remote automatic control, ultimately reduce costs, and improve production efficiency; at the same time, it reduces the number of workers and lowers the labor cost.
[0021] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An automatic medium dispensing device for a coal washing plant, characterized in that: It includes a medium silo, a concentrated medium barrel, a water replenishment pipeline, a concentrated medium pump, a combined medium barrel and a combined medium pump; the discharge port of the medium silo is connected to the feed port of the concentrated medium barrel through a screw elevator; the water outlet end of the water replenishment pipeline is connected to the water inlet above the concentrated medium barrel, the liquid outlet at the bottom of the concentrated medium barrel is connected to the liquid inlet of the concentrated medium pump through a pipeline, the liquid outlet of the concentrated medium pump is connected to the reflux port of the concentrated medium barrel and the liquid inlet of the combined medium barrel through pipelines, and the liquid outlet of the combined medium barrel is connected to the liquid inlet of the combined medium pump through a pipeline; A liquid level sensor is arranged in the concentrated medium barrel, an automatic water replenishment valve is arranged on the water replenishment pipeline, a concentrated medium density sensor and a control valve are arranged in sequence on the pipeline at the liquid outlet of the concentrated medium pump, a reflux valve is arranged on the connecting pipeline between the control valve and the reflux port of the concentrated medium barrel, and a switch valve is arranged on the connecting pipeline between the control valve and the liquid inlet of the combined medium barrel; a combined medium density sensor is arranged on the pipeline at the liquid outlet of the combined medium pump; The signal output ends of the liquid level sensor, the concentrated medium density sensor and the combined medium density sensor are all connected to the signal input end of the controller through signals, and the signal output end of the controller is respectively connected to the signal input end of the screw elevator, the concentrated medium pump, the combined medium pump, the automatic water replenishment valve, the control valve, the reflux valve and the switch valve through signals.
2. The automatic medium dispensing device of a coal washing plant according to claim 1, characterized in that: It also includes a compressed air pipeline, the air outlet of which is connected to the air inlet at the bottom of the concentrated medium barrel; an automatic inflation valve is arranged on the compressed air pipeline; the signal output of the controller is connected to the signal input of the automatic inflation valve through a signal.
3. The automatic medium dispensing device of a coal washing plant according to claim 1, characterized in that: It also includes a vibration motor, which is fixedly arranged at the bottom of the medium silo, and the signal output end of the controller is connected with the signal input end of the vibration motor through a signal.