CN202951290U - Coal preparation plant coal slurry sedimentation basin automatic drug feeding system - Google Patents

Abstract

The utility model relates to an automatic dosing system for a coal slime sedimentation tank of a coal preparation plant. It includes a water storage tank and a coal slime sedimentation tank. There are two chemical tanks connected in parallel between the water storage tank and the coal slime sedimentation tank. There is a liquid inlet pipeline on the coal slime sedimentation tank. The two chemical tanks pass through the pipeline and the water storage tank and The liquid inlet pipelines are connected, the two chemical tanks are respectively equipped with stirring devices, and the pipelines between the reservoir and the two chemical tanks are respectively equipped with a first ball valve and an electromagnetic flowmeter. The pipeline between the two medicine barrels and the liquid inlet pipeline is respectively provided with second ball valves for controlling the outflow of medicine from the medicine barrels. The first ball valve, the second ball valve, the electromagnetic flowmeter and the stirring device are all connected to the control system. The utility model automatically controls the whole dosing system through the controller. Compared with the original manual dosing, it can better control the ratio of medicine and water, and at the same time, it can effectively control the dose of medicine flowing into the slime sedimentation tank. Save time and effort, high dosing efficiency.

Description

Automatic dosing system for slime sedimentation tank in coal preparation plant

technical field

The utility model belongs to the technical field of coal slime sedimentation tanks in coal preparation plants, and in particular relates to an automatic dosing system for coal slime sedimentation tanks in coal preparation plants.

Background technique

The slime sedimentation tank of the coal preparation plant is a device that recovers solids from the slime water and obtains clarified water through gravity sedimentation. Simply put, the slime sedimentation tank is a device for solid-liquid separation of the slime water. At present, with the improvement of the degree of mechanization of coal preparation, the proportion of fine coal in the slime water is increasing, and the particle size structure of the coal slime brings great inconvenience to the treatment of the slime water. In order to make the circulating water The concentration can meet the normal production. Many manufacturers add coagulant and flocculant to coagulation and flocculation treatment at the same time in the slime water to improve the particle size composition of the particles in the slime water. However, during the combined use of these two agents, Attention must be paid to the order of dosing and the dosage of medicines. At present, most manufacturers use manual dosing, which is difficult to control in the metering of medicines, and it is time-consuming and laborious, and the dosing efficiency is low.

Utility model content

The purpose of the utility model is to provide an automatic dosing system for the slime sedimentation tank of a coal preparation plant, the dosing system can realize automatic dosing, the metering of the medicine is accurate, and the dosing efficiency is high.

In order to achieve the above purpose, the utility model adopts the following technical solutions: an automatic dosing system for coal slime sedimentation tank in coal preparation plant, including a water storage tank and a coal slime sedimentation tank. Two chemical barrels are arranged in parallel, and the liquid inlet pipeline is provided on the coal slime sedimentation tank, and the two chemical barrels are respectively connected with the reservoir and the liquid inlet pipeline through pipelines, and the two chemical barrels are respectively equipped with There is a stirring device, and the pipeline between the reservoir and the two chemical barrels is respectively provided with a first ball valve for controlling water injection from the reservoir to the chemical barrels and an electromagnetic flowmeter for monitoring the water injection volume of the chemical barrels. The pipelines between the two medicine barrels and the liquid inlet pipeline are respectively provided with second ball valves for controlling the outflow of medicine from the medicine barrels. The first ball valve, the second ball valve, the electromagnetic flowmeter and the stirring device are all connected with the control system. connected.

Simultaneously, the utility model can also be further realized through the following technical measures:

Further, the control system includes a host computer, the output terminal of the host computer is connected to the controller, the output terminal of the controller is connected to the terminal box, and the output terminal of the terminal box is respectively connected to the first ball valve, the second Ball valve, electromagnetic flowmeter and stirring device are connected.

Further, the first ball valve is driven by the first control motor, the second ball valve is driven by the second control motor, the stirring device is driven by the third control motor, the output end of the terminal box They are respectively connected with the first, second and third control motors.

Further, the stirring device includes a rotating shaft and a stirring impeller fixed on the rotating shaft, the upper end of the rotating shaft is suspended above the mouth of the medicine barrel, and the upper end of the rotating shaft is connected to the output shaft of the third control motor. A transmission belt is provided, and the lower end of the rotating shaft is close to the bottom of the medicine barrel.

Preferably, a plate-like false bottom is provided between the lower end of the rotating shaft and the bottom of the medicine barrel, and a support column for supporting the false bottom is provided between the false bottom and the bottom of the medicine barrel.

Preferably, the stirring impeller includes first and second stirring impellers arranged along the axial direction of the rotating shaft, the first stirring impeller is located in the middle section of the rotating shaft, and the second stirring impeller is located at the lower end of the rotating shaft .

Further, the liquid inlet pipe is provided with a ridge that makes the medicine flowing out of the two medicine barrels in a state of turbulent flow.

Preferably, the ridges are evenly arranged at the bottom of the liquid inlet pipe, and the ridges are gradually arranged obliquely upward from the bottom of the liquid inlet pipe along the water flow direction.

Preferably, the ridge bars are parallel to each other.

Further, the inlet of the pipeline between the reservoir and the two medicine barrels is located at the bottom of the reservoir, and the outlet of the pipeline between the reservoir and the two medicine barrels is located at the wall of the medicine barrel. Above, the pipeline inlet between the two medicament barrels and the liquid inlet pipeline is located at the bottom of the medicament barrel.

The beneficial effects of the utility model are:

1) The utility model automatically controls the entire dosing system through the controller. Compared with the original manual dosing, it can better control the ratio of the medicine and water, and can effectively control the medicine flowing into the slime sedimentation tank. Dosage, saving time and effort, high dosing efficiency;

2) There is a sill in the liquid inlet pipeline of the utility model, and the sill is also a retaining strip, so that the medicine in the liquid inlet pipeline can be in a turbulent state, and at the same time play the role of stirring the medicine, especially in the two In the pipeline after the medicaments are mixed, the two medicaments can be fully mixed through the sill, and the mixing is more uniform.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The meanings of the marks in the figure are as follows:

1—reservoir 2—coal slime sedimentation tank 21—inlet pipe 22—sill bar

3—medicine barrel 4—stirring device 41—third control motor 42—rotating shaft

43—Stirring impeller 431—First stirring impeller 432—Second stirring impeller

44—Drive belt 5—The first ball valve 51—The first control motor 6—Electromagnetic flowmeter

7—the second ball valve 71—the second control motor 8—control system 81—host computer

82—controller 83—terminal box 9—false bottom

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, an automatic dosing system for the slime sedimentation tank of a coal preparation plant includes a water storage tank 1 and a coal slime sedimentation tank 2, and two medicines are arranged in parallel between the water storage tank 1 and the coal slime sedimentation tank 2 The barrel 3 and the slime sedimentation tank 2 are provided with a liquid inlet pipe 21, and the two chemical barrels 3 are respectively connected with the reservoir 1 and the liquid inlet pipe 21 through pipelines, and the two chemical barrels 3 are respectively equipped with a stirring device 4 The pipeline between the reservoir 1 and the two medicament barrels 3 is respectively provided with a first ball valve 5 for controlling water injection from the cistern 1 to the medicament barrel 3 and an electromagnetic flowmeter 6 for monitoring the water injection volume of the medicament barrel 3, The pipelines between the two medicine barrels 3 and the liquid inlet pipeline 21 are respectively provided with second ball valves 7 for controlling the outflow of medicine from the medicine barrels 3, the first ball valve 5, the second ball valve 7, the electromagnetic flowmeter 6 and the stirring device 4 are all It is connected with the control system 8.

Further, the control system 8 includes a host computer 81, the output terminal of the host computer 81 is connected to the controller 82, the output terminal of the controller 82 is connected to the terminal box 83, and the output terminal of the terminal box 83 is respectively connected to the first ball valve 5, The second ball valve 7, the electromagnetic flowmeter 6 and the stirring device 4 are connected.

Furthermore, the first ball valve 5 is driven by the first control motor 51, the second ball valve 7 is driven by the second control motor 71, and the stirring device 4 is driven by the third control motor 41, specifically the output end of the terminal box 83 They are respectively connected to the first control motor 51 , the second control motor 71 and the third control motor 41 .

Further, the inlet of the pipeline between the reservoir 1 and the two medicine barrels 3 is located at the bottom of the reservoir 1, and the outlet of the pipeline between the reservoir 1 and the two medicine barrels 3 is located at the wall of the medicine barrel 3. Above, the pipeline inlet between the two medicament barrels 3 and the liquid inlet pipeline 21 is located at the bottom of the medicament barrel 3 .

Further, the stirring device 4 includes a rotating shaft 42 and a stirring impeller 43 fixed on the rotating shaft 42, the upper end of the rotating shaft 42 is suspended above the mouth of the medicine barrel 3, and the upper end of the rotating shaft 3 is connected to the output of the third control motor 41 A transmission belt 44 is arranged between the shafts, and the lower end of the rotating shaft 42 is close to the bottom of the medicine barrel 3 .

Preferably, a plate-shaped false bottom 9 is provided between the lower end of the rotating shaft 42 and the bottom of the medicine barrel 3 , and a support column for supporting the false bottom 9 is provided between the false bottom 9 and the bottom of the medicine barrel 3 . The false bottom 9 can make the medicine mixed with water not enter the liquid inlet pipe 21 so quickly, but fully mix in the medicine barrel under the blocking of the false bottom 9, so that it enters the liquid inlet pipe 21 after mixing completely, thereby entering Coal slime sedimentation tank 2.

Preferably, the stirring impeller 43 includes a first stirring impeller 431 and a second stirring impeller 432 arranged axially along the rotating shaft 42, the first stirring impeller 431 is located at the middle section of the rotating shaft 42, and the second stirring impeller 432 is located at the lower end of the rotating shaft 42 department. The utility model is provided with two stirring impellers, which can make the medicine in the medicine barrel more fully mixed with water, and make the mixed medicine enter the liquid inlet pipe 21 more evenly.

Further, the liquid inlet pipe 21 is provided with a ridge 22 to make the medicine flowing out of the two medicine barrels 3 in a turbulent state. Since the flow rate of the medicament in the liquid inlet pipe is relatively slow, it is easy to aggregate and settle, so a sill is set in the liquid inlet pipe 21 to keep the medicament in a turbulent state and at the same time play the role of stirring the medicament, especially after the two medicaments are mixed In the liquid inlet pipe 21, the two medicaments can be fully mixed.

Preferably, as shown in Figure 1, the sill 22 is uniformly arranged at the bottom of the liquid inlet pipe 21, and the sill 22 is arranged obliquely from the bottom of the liquid inlet pipe 21 to the upper right, that is, the sill 22 is arranged from the liquid inlet along the direction of water flow. The bottom of the duct 21 is set gradually upwards. Under the action of the ridges 22, the water flow entrained with medicine between two adjacent ridges 22 will generate turbulent flow, so that the medicines can be fully mixed in the process of advancing.

Preferably, the ridge bars 22 are parallel to each other.

Below in conjunction with Fig. 1, the working process of the present utility model is further described:

First, add coagulant and flocculant into two chemical tanks 3 respectively, and inform the control center of the weight of the added agents, and the control center gives instructions to the controller 82 through the host computer 81, and the controller 82 sends the The signal is transmitted to the first control motor 51, and the first control motor 51 controls the opening of the first ball valve 5. At this time, the reservoir 1 adds water to the two medicine barrels 3 respectively, and at the same time, the electromagnetic flowmeter monitors the amount of water added, thereby controlling the flow of medicine. concentration; after adding water, the controller 82 transmits the signal to the third control motor 41 through the terminal box 83, and the third control motor 41 drives the rotating shaft 42 to rotate, and simultaneously drives the stirring impeller 43 on the rotating shaft 42 to rotate, so that the medicine barrel 43 The medicament in the medicament barrel 3 is fully mixed with the water, and then the controller 82 transmits the signal to the second control motor 71 through the terminal box, at this time the second ball valve 7 is opened, and the medicament in the medicament barrel 3 flows out from the pipeline below the false bottom 9, and along the Flow along the liquid inlet pipeline 21 covered with ridges 22, and finally enter the coal slime sedimentation tank 2. If the automatic dosing system described in the utility model needs to control the addition of two medicines in different proportions, it can be realized by controlling the opening degrees of the two second ball valves 7 respectively.

The above-mentioned embodiments are only described to the preferred implementation of the utility model, and are not limited to the scope of the utility model. Various modifications and improvements made should fall within the scope of protection determined by the claims of the utility model.

Claims (10)

1. An automatic dosing system for a coal slime sedimentation tank in a coal preparation plant, including a water storage tank (1) and a coal slime sedimentation tank (2). There are two chemical barrels (3) connected in parallel between them. The slime sedimentation tank (2) is provided with a liquid inlet pipe (21), and the two chemical barrels (3) pass through the pipeline and the reservoir (1) respectively. connected with the liquid inlet pipe (21), and the two chemical barrels (3) are respectively equipped with a stirring device (4), which is characterized in that: the water storage tank (1) and the two chemical barrels (3) ) are equipped with a first ball valve (5) used to control water injection from the reservoir (1) to the chemical tank (3) and an electromagnetic flowmeter (6) used to monitor the water injection volume of the chemical tank (3), A second ball valve (7) is provided on the pipeline between the two medicine barrels (3) and the liquid inlet pipe (21) to control the outflow of medicine from the medicine barrel (3), and the first ball valve (5) ), the second ball valve (7), the electromagnetic flowmeter (6) and the stirring device (4) are all connected to the control system (8). 2. The automatic dosing system according to claim 1, characterized in that: the control system (8) includes a host computer (81), the output end of the host computer (81) is connected to the controller (82), and the control The output end of the device (82) is connected to the terminal box (83), and the output end of the terminal box (83) is respectively connected to the first ball valve (5), the second ball valve (7), the electromagnetic flowmeter (6) And the stirring device (4) is connected. 3. The automatic dosing system according to claim 2, characterized in that: the first ball valve (5) is driven by the first control motor (51), and the second ball valve (7) is controlled by the second Driven by a motor (71), the stirring device (4) is driven by a third control motor (41), and the output terminals of the terminal box (83) are respectively connected to the first control motor (51), the second control motor ( 71) is connected with the third control motor (41). 4. The automatic dosing system according to claim 3, characterized in that: the stirring device (4) includes a rotating shaft (42) and a stirring impeller (43) fixed on the rotating shaft (42), the rotating shaft ( The upper end of 42) hangs above the mouth of the medicine barrel (3), and a transmission belt (44) is provided between the upper end of the rotating shaft (3) and the output shaft of the third control motor (41), and the rotating shaft ( 42) The lower end is close to the bucket bottom of the medicament bucket (3). 5. The automatic dosing system according to claim 4, characterized in that: a flat false bottom (9) is provided between the lower end of the rotating shaft (42) and the bottom of the medicine barrel (3) , a support column for supporting the false bottom (9) is provided between the false bottom (9) and the bottom of the medicine barrel (3). 6. The automatic dosing system according to claim 4, characterized in that: the stirring impeller (43) includes a first stirring impeller (431) and a second stirring impeller arranged along the axial direction of the rotating shaft (42). (432), the first stirring impeller (431) is located at the middle section of the rotating shaft (42), and the second stirring impeller (432) is located at the lower end of the rotating shaft (42). 7. The automatic dosing system according to claim 1, characterized in that: the liquid inlet pipe (21) is provided with a ridge (22) to make the medicine flowing out of the two medicine barrels (3) in a turbulent state ). 8. The automatic dosing system according to claim 7, characterized in that: the sill (22) is uniformly arranged at the bottom of the liquid inlet pipe (21), and the sill (22) is along the direction of water flow The bottom of the liquid inlet pipe (21) is gradually arranged obliquely upward. 9. The automatic dosing system according to claim 7 or 8, characterized in that: the sills (22) are parallel to each other. 10. The automatic dosing system according to claim 1, characterized in that: the pipeline inlet between the reservoir (1) and the two medicine barrels (3) is located at the bottom of the reservoir (1) , the pipeline outlet between the reservoir (1) and the two medicament barrels (3) is located above the wall of the medicament barrel (3), and the two medicament barrels (3) and the liquid inlet pipe ( 21) The inlet of the pipeline is located at the bottom of the chemical barrel (3).

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