CN110015738A - A system for quantitative addition of powdered pharmaceuticals - Google Patents

Abstract

The invention relates to the field of adding powdery coagulants, flocculants and filter aids in a coal slime water treatment process, in particular to a system for quantitatively adding powdery agents. The invention at least includes a storage bin, and also includes an electromagnetic vibration exciter, a star discharger, a screw feeder, a blower and a pneumatic conveying pipeline; It is discharged to the star discharger, and the screw feeder is connected to the outlet of the star discharger; the screw feeder includes a screw feed chute, a screw push rod and a variable frequency drive motor. The speed of the screw push rod can be adjusted to achieve quantitative accuracy. For the purpose of controlling the amount of powdery flocculating agent added, the discharge port of the screw feeder is connected to the pneumatic conveying pipeline; the pneumatic conveying pipeline is connected to the blower, and the blower blows the air to the jet mixing device of the agent. It integrates material, unloading, quantitative conveying and automatic spraying and dispersing, and has the advantages of reasonable system structure and high degree of automation.

Description

A system for quantitative addition of powdered pharmaceuticals

technical field

The invention relates to the field of adding powdery coagulants, flocculants and filter aids in a coal slime water treatment process, in particular to a system for quantitatively adding powdery agents.

Background technique

The vast majority of coal preparation plants in my country use wet coal preparation. Coal slime water treatment is an important part of the wet coal preparation process. From the perspective of economy and environmental protection, it is required that the slime water be deeply clarified and the washing water be closed in a closed circuit. Coal preparation plants usually use the coagulation method to treat the slime water. The so-called coagulation method is to add a coagulant to the slime water system to make the particles in the slime water system agglomerate and then settle by gravity. Coagulants are divided into two categories, coagulants and flocculants. The commonly used organic polymer flocculants, such as polyacrylamide, have the characteristics of large molecular weight and long side chains, so there is a long dissolution time and insufficient dissolution. Disadvantages, if the preparation and addition are improper, it will cause the phenomenon of low concentration of chemicals, waste of chemicals, etc. In serious cases, it will directly affect the treatment effect of coal slime water. The traditional preparation method of powdered flocculant in coal preparation plants is to directly add powdered flocculant into the mixing tank and stir directly. There are problems such as deviation in the concentration of the agent, and a special driver needs to be set up to observe the liquid level and add the powdered flocculant on time. There is a certain hysteresis and the dosage of the drug is artificially biased. Although the utility model 201721157662.5 proposes to use a screw feeder for feeding to solve the problem of uneven feeding, and the invention patent 201410260122.4 proposes to use a drug dispersing screen to achieve the purpose of uniform dispersion of the drug during the feeding process, it cannot solve the problem of arching in the storage bin Agglomeration, quantitative addition of pharmaceuticals and other problems, so a powder pharmaceutical quantitative addition system is needed to solve the problem of insufficient dispersion and dissolution caused by unreasonable addition of pharmaceuticals.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and design a powdered medicament quantitative addition system, including a medicament storage device, a quantitative conveying and adding device, to ensure that the powdered medicament is evenly blanked, quantitatively conveyed and added in a dispersed manner. The uniform dispersion and rapid dissolution of the agent in the aqueous solution create conditions. The invention integrates a storage bin, an electromagnetic exciter, a star discharger, a screw feeder, a blower and a pneumatic conveying pipeline. The conveying and automatic spraying and dispersing are completed in one go, which has the advantages of reasonable system structure and high degree of automation. It can eliminate the deviation caused by human factors in the process of material storage, conveying and adding, and provide good chemical conditions for the subsequent coal slime water treatment work.

To achieve the above object, the present invention has adopted the following technical solutions:

A system for quantitative addition of powdered medicaments, comprising at least a storage silo, and also includes the following components:

The lower part of the storage bin and the discharge port are designed with an electromagnetic vibration exciter and a star discharger respectively; the upper part of the storage bin is cylindrical, the lower part is an inverted cone, and the top of the storage bin is an open feed port , there is a discharge port at the bottom, and electromagnetic vibration exciters are arranged on both sides of the inverted cone at the bottom of the storage bin; the electromagnetic vibration exciter can evenly vibrate the powdery flocculating agent in the storage bin to prevent arching in the bin When the phenomenon occurs, the vibrated materials are discharged from the discharge port at the bottom of the storage bin; the discharge port at the bottom of the storage bin is connected to a star discharger, which can ensure the uniform discharge of the powdery flocculation agent and prevent the discharge process. The phenomenon of blockage and agglomeration occurs in the feeder, and a screw feeder is connected to the outlet of the star discharger; the screw feeder includes a screw feed chute, a screw push rod and a variable frequency drive motor, and the screw push rod is connected with the variable frequency drive motor. The rotational speed of the push rod is adjustable, so as to achieve the purpose of quantitatively controlling the amount of powdered flocculants added. The discharge port of the screw feeder is connected with the pneumatic conveying pipeline; The jet mixing device of the agent, the powder flocculation agent quantitatively fed by the screw feeder, is blasted by the blower and pneumatically sprayed to the jet mixing device of the agent.

The beneficial effects of the present invention are:

1) The top of the storage silo of the medicine of the present invention is designed as an open feed port, which is convenient for the pouring of powdery materials and the observation of the material silo. The staff can participate in other post inspections as long as the storage silo is filled up. ;The feeding of the storage bin is controlled by the electromagnetic vibration exciter and the star discharger. The electromagnetic vibration exciter and the star discharger can be intelligently linked by PLC. The vibrator can vibrate the powdery flocculants evenly to prevent the occurrence of arching in the silo. The discharge port at the bottom of the storage silo is connected to a star discharger, which can ensure the uniform discharge of the powdery flocculants and prevent the unloading process. Blockage and agglomeration occur.

2) The quantitative conveying and adding device of the medicament of the present invention is mainly composed of a screw feeder, a blower and a pneumatic conveying pipeline. The screw feeder includes a screw feed chute, a screw push rod and a variable frequency drive motor, and the screw push rod and The drive motor is connected, the cross-sectional area S of the screw feeding chute is constant, and the amount of medicine stored per unit area M is constant. S×M×υ, by controlling the rotational speed of the screw push rod, the purpose of quantitatively controlling the amount of powder flocculant added is achieved; the discharge port of the screw feeder is connected with the pneumatic conveying pipeline, and the power source device of the pneumatic conveying is the blower The blower blows the powdery flocculation agent conveyed by the screw feeder into the jet mixing device of the agent by blowing air. The advantage of pneumatic conveying is that the conveying process itself is to realize the dispersion of powdery materials.

Description of drawings

Fig. 1 is the front schematic diagram of the present invention;

Fig. 2 is each system logical relation diagram of the present invention;

3 is a schematic front view of the jet mixing device in the structure of FIG. 1;

4 is a schematic top view of the umbrella-shaped disperser at the lower part of the jet mixing device in the structure of FIG. 3;

The corresponding relationship between each structure shown in the figure and the name of the component of the present invention is as follows:

A-drug storage system B-drug quantitative delivery and addition system C-drug efficient dispersion system D-PLC intelligent control system 1-silo cover 2-storage bin 3-electromagnetic exciter 4-star discharger 5-frequency conversion Drive Motor 6- Screw Feeder 6A- Screw Push Rod 6B- Screw Feed Chute 7- Blower 8- Pneumatic Conveying Pipeline 9- Jet Mixing Device 10- Stirring Dispersing Device 11- Stirrer 11A- Stirring Shaft 11B- Impeller 12- Liquid level measuring device 12A-Ultrasonic probe 12B-Float ball 14-False bottom 15-Discharge port 16-Pressure water pipe 17-Water pump 18-Mixing bucket 18A-Baffle plate 19-Pressure water pipe 20-Ejection gas pipe 21-Mixing chamber 22-diffusion pipe 23-umbrella diffuser 24-nozzle

Detailed ways

The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example. The present invention is applied in the powdery flocculation agent adding system in the coal slime water treatment process

As shown in Figure 1-4, a system for quantitative addition of powdered pharmaceuticals includes a storage bin (2), and also includes the following components:

A pharmaceutical storage system (A), the storage system comprises a storage bin (2), an electromagnetic exciter (3), and a star-shaped discharge valve (4) that are connected in sequence; the upper part of the storage bin is cylindrical, and the lower part is Inverted cone, the top of the storage bin is an open feed port, the bottom is provided with a discharge port, and electromagnetic exciters (3) are provided on both sides of the inverted cone at the bottom of the storage bin (2). 3) The powder flocculating agent in the storage bin (2) can be vibrated evenly to prevent the occurrence of arching in the bin. The vibrated material is discharged from the discharge port at the bottom of the storage bin, and the material discharged from the bottom of the storage bin is discharged. The outlet is connected to the star discharger (4), which can ensure the uniform discharge of the powdery flocculating agent and prevent blockage and agglomeration during the discharge process. The outlet of the star discharger is connected to a screw feeder (6);

Quantitative drug delivery and addition system (B), which is mainly composed of a screw feeder (6), a blower (7) and a pneumatic conveying pipeline (8); the screw feeder includes a screw feed chute (6B), a screw pusher The rod (6A) is connected with the variable frequency drive motor (5), the screw push rod (6A) is connected with the variable frequency drive motor (5), and the star discharger (4) discharges the powdery flocculant into the screw feed chute (6B) , under the pushing action of the screw push rod (6A), it moves towards the discharge port of the screw feeder, and the speed of the screw push rod (6A) is adjustable, so as to achieve the purpose of quantitatively controlling the amount of powder flocculant added. The discharge port of the machine is connected with the pneumatic conveying pipe (8), and the pneumatic conveying pipe (8) is respectively connected with the power source device of pneumatic conveying-the blower (7) and the high-efficiency dispersing system of the medicine, and the screw feeder (6) is quantitatively fed. The powdery flocculating agent is pneumatically conveyed to the agent dispersing system by the blower (7);

A high-efficiency pharmaceutical dispersion system (C), the system is mainly composed of a jet mixing device (9), a stirring and dispersing device (10) and a liquid level measuring device (12); the jet mixing device mainly includes a pressure water pipe (19), an ejector gas pipe ( 20), a mixing chamber (21) and a diffusion pipe (22), wherein the outlet of the diffusion pipe is provided with an umbrella-shaped disperser (23), which can further strengthen the uniform dispersion and mixing of the medicament in the aqueous solution; the stirring and dispersing device (10) mainly includes mixing The mixing bucket (18) and the agitator (11) are designed with a false bottom (14) at the bottom of the mixing and mixing bucket (18) to prevent the aqueous solution of the medicinal solution from being directly “scrambled” from the discharge port (15), and the mixing and mixing bucket (18) bucket A number of baffles (18A) are arranged on the wall to eliminate the phenomenon of "cylindrical rotation zone" that occurs when the fluid in the barrel moves along the barrel wall, increase the turbulence of the liquid in the barrel, and improve the stirring performance of the agitator (11). ) consists of a stirring shaft (11A) and an impeller (11B). The impeller (11B) adopts an arc-shaped design. The stirring shaft (11A) drives the impeller (11B) to rotate, so as to realize the continuous dispersion and mixing of the medicine in the aqueous solution, and finally realize the efficient dissolution of the medicine. , the stirring shaft (11A) adopts a hollow design, and a liquid level measuring device (12) is installed inside it. The liquid level measuring device mainly includes an ultrasonic probe (12A) and a floating ball (12B), and the floating ball (12B) is installed on the stirring shaft. (11A) In the hollow, the influence of the liquid level fluctuation caused by the stirring action on the measurement result is eliminated;

The PLC intelligent control system (D), the liquid level measuring device (12) transmits the liquid level data of the mixing tank to the PLC intelligent control system, and the intelligent control system analyzes the data, if the liquid level is lower than the lower limit of the set value, then at the same time Turn on the electromagnetic vibration exciter (3), the star discharger (4), the screw feeder (6), the blower (7) and the feed water pump (17) of the jet mixing device (9), and wait until the liquid level is higher than Set the upper limit of the value, while stopping the electromagnetic exciter (3), star discharger (4), screw feeder (6), blower (7) and the feed water pump (17) of the jet mixing device (9) )Operation.

To sum up, the quantitative addition system of powdered agent of the present invention fully considers the addition and dissolution characteristics of coal slime water powdery coagulant agent, material storage, unloading, quantitative conveying and automatic spraying and dispersing are completed in one go, with reasonable system structure and high degree of automation. Advantages: It can eliminate the deviation caused by human factors in the process of material storage, transportation and addition, achieve accurate and quantitative addition, and ensure that the powdered agent enters the next process link in a dispersed state, providing good coagulation for subsequent coal slurry water treatment work. Chemical conditions, the coagulation effect is controllable and predictable, and the consumption of chemicals is low.

Claims (1)

1. A powdery medicament quantitative addition system, comprising at least a storage bin (2), is characterized in that: the lower part and the discharge port of the storage bin (2) are respectively designed with an electromagnetic vibration exciter (3) and a star discharger. A feeder (4); the upper part of the storage bin (2) is cylindrical, the lower part is an inverted cone, the top of the storage bin (2) is an open feed port, and the bottom is provided with a discharge port, where the material is stored Electromagnetic vibration exciters (3) are provided on both sides of the lower inverted cone of the bin (2); the electromagnetic vibration exciters (3) can evenly vibrate the powdery flocculating agent of the storage bin (2) to prevent the storage bin (2) from forming When the arching phenomenon occurs, the vibrated material is discharged from the discharge port at the bottom of the storage bin; the discharge port at the bottom of the storage bin is connected to the star discharger (4), which can ensure that the powdery flocculation agent is discharged evenly. To prevent blockage and agglomeration during the discharge process, a screw feeder (6) is connected to the outlet of the star discharger; the screw feeder (6) includes a screw feed chute (6B), a screw push rod (6A) ) and the variable frequency drive motor (5), the screw push rod (6A) is connected with the variable frequency drive motor (5), and the speed of the screw push rod (6A) is adjustable, so as to achieve the purpose of quantitatively controlling the amount of powder flocculant added. The discharge port of the feeder is connected with the pneumatic conveying pipeline (8); the pneumatic conveying pipeline (8) is respectively connected with the power source device of pneumatic conveying-the blower (7) and the jet mixing device (9) of the medicine, and the screw feeder (6) The powdery flocculant medicament fed quantitatively is blasted by the blower (7), and is pneumatically sprayed to the jet mixing device (9) of the medicament.