CN212524475U - Coal grinding system - Google Patents

Abstract

The utility model belongs to a coal grinding system. The system comprises at least two independent coal grinding units, wherein each coal grinding unit comprises a coal grinding device and an additive tank connected with an additive port of the coal grinding device, and the additive tank is connected with a desalination water tank through an additive stirring tank; the additive stirring tanks in the at least two independent coal grinding units are respectively connected with the additive conveying unit; the additive conveying unit comprises a batching tank and an additive conveying pipeline with a batching pump, and the additive conveying pipeline is connected with the additive stirring tank through an additive conveying branch pipeline respectively. The method has the advantages of saving energy, protecting environment, reducing labor intensity and labor cost, facilitating unified management, ensuring the quality of the coal water slurry, saving management cost and shortening the charge of solid additives.

Description

Coal grinding system

Technical Field

The utility model belongs to the technical field of the coal slurrying, concretely relates to coal grinding system.

Background

In the coal slurry preparation process, an additive is required to be added to reduce the viscosity of the coal slurry in the coal slurry grinding process, so that the coal slurry additive is an essential step in the coal slurry preparation process, and as the coal slurry additive is solid powder and needs to be prepared on site and ensure the addition amount of the coal slurry additive, an on-site operator needs to enter the site to add the coal slurry additive, and the poor on-site environment caused by the influence of noise and dust in the coal slurry preparation process seriously affects the physical and mental health of the on-site operator; furthermore, as the demand for coal pulping rises, many enterprises are caused to be simultaneously equipped with a plurality of coal grinding units, and based on the current situation caused by the fact that each coal grinding unit needs to be equipped with special coal slurry additive personnel, the labor cost is increased, meanwhile, the short turnover cost of the additive is also increased, and because a plurality of coal grinding units cannot form a complete system, the addition amount of the coal slurry additive is inconsistent, and the quality of the coal water slurry is directly inconsistent to influence the subsequent production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect among the prior art, and provide one kind and prepare the powdered coal slurry additive of solid into the semi-manufactured goods liquid additive of high concentration through concentrating the configuration, in order to realize the delivery to each coal grinding unit, the volume that reentrant coal grinding unit passes through control semi-manufactured goods liquid additive dilutes it and makes it become the qualified additive of concentration and supply coal slurry system to use, energy-concerving and environment-protective has, reduce artifical intensity and recruitment cost, be convenient for unified management, can guarantee the coal slurry quality, save the coal grinding system of administrative cost and the short expense of falling of solid additive.

The purpose of the utility model is realized like this: the coal grinding system comprises at least two independent coal grinding units, wherein each coal grinding unit comprises a coal grinding device and an additive tank connected with an additive port of the coal grinding device, and the additive tank is connected with a desalination water tank through an additive stirring tank; the additive stirring tanks in the at least two independent coal grinding units are respectively connected with the additive conveying unit; the additive conveying unit comprises a batching tank and an additive conveying pipeline with a batching pump, and the additive conveying pipeline is connected with the additive stirring tank through an additive conveying branch pipeline respectively.

Preferably, the additive stirring tank is arranged underground, a stirring device with a motor is arranged in the middle of the top of the additive stirring tank, and the top of the additive stirring tank is respectively provided with a desalted water inlet connected with the desalted water tank, an additive inlet connected with the additive conveying branch pipeline, and an additive outlet connected with the additive tank.

Preferably, a first flow meter, a first valve and a desalting water pump are sequentially arranged between the brine inlet and the desalting water tank.

Preferably, a second valve and a second flowmeter are arranged between the additive conveying branch pipe and the additive inlet.

Preferably, an additive delivery pump is arranged between the additive outlet and the additive tank.

Preferably, an additive feeding pump is arranged between the additive port of the coal grinding device and the additive tank.

The utility model has the advantages of energy-concerving and environment-protective, reduce artifical intensity and recruitment cost, be convenient for unified management, can guarantee the coal slurry quality, save administrative cost and the short expense of falling of solid additive.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the coal grinding unit of the present invention.

Fig. 3 is a schematic structural diagram of the additive delivery unit of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product.

As shown in fig. 1-3, the utility model relates to a coal grinding system, which comprises at least two independent coal grinding units 1, wherein the coal grinding units 1 comprise a coal grinding device 10 and an additive tank 11 connected with an additive port of the coal grinding device, and the additive tank 11 is connected with a desalination water tank 13 through an additive stirring tank 12; the additive stirring tanks 12 in the at least two independent coal grinding units 1 are respectively connected with the additive conveying unit 2; the additive delivery unit 2 comprises a dosing tank 20 and an additive delivery pipe 22 with a dosing pump 21, and the additive delivery pipe 22 is connected to the additive stirring tank 12 through additive delivery branch pipes 23. The utility model changes the original additive solid adding port into the adding mode of the pipeline type liquid phase additive, which can effectively reduce the dust pollution, and simultaneously, the finished product liquid phase additive in the additive groove 11 enters the coal grinding device 10 to realize the quantitative accurate adding, and is beneficial to ensuring the quality of the coal water slurry; the utility model can realize the preparation, the transportation and the dilution of the semi-finished liquid additive with high concentration by adopting the mode of manual operation control or single chip microcomputer control, and can realize the accurate quantitative addition of the finished liquid additive; the labor intensity of field operators is reduced, the labor cost is saved, the adding precision of the additive is ensured, and the characteristic of ensuring the quality of the coal water slurry is realized.

Further, the additive stirring tank 12 is arranged underground, and a stirring device 19 with a motor is arranged in the middle of the top of the additive stirring tank 12, and the top of the additive stirring tank 12 is respectively provided with a desalted water inlet connected with the desalted water tank 13, an additive inlet connected with the additive conveying branch pipeline 23, and an additive outlet connected with the additive tank 11. The additive stirring tank 12 is arranged below the ground, so that the conveying of materials is facilitated, and the reasonable layout of equipment can be realized, so that the characteristic of reducing the floor area of the equipment is achieved; the additive stirring tank 12 of the utility model is mainly used for diluting the high-concentration semi-finished liquid additive to make the semi-finished liquid additive become the finished liquid additive meeting the requirements; in the actual use process, the additive stirring tank 12 can adopt an intermittent preparation or continuous compounding mode, and the prepared finished product liquid additive is conveyed to the additive tank 11 for standby; the additive tank 11 can determine the adding time of the additive according to the requirement of the coal grinding device 10, and the finished liquid additive inside the additive tank can accurately and quantitatively enter the coal grinding device 10 to be used for adjusting the viscosity of the coal water slurry.

Further, a first flow meter 14, a first valve 15 and a desalination pump 16 are sequentially disposed between the brine inlet and the desalination water tank 13. A second valve 24 and a second flow meter 25 are arranged between the additive delivery branch 23 and the additive inlet. The arrangement of the instruments, the valves and other related equipment can realize the effective dilution of the high-concentration semi-finished product liquid additive, ensure the concentration of the finished product liquid additive and lay a foundation for the accurate and quantitative entry of the finished product liquid additive into the coal grinding device 10.

Further, an additive delivery pump 17 is provided between the additive outlet and the additive tank 11. An additive feeding pump 18 is arranged between the additive port of the coal grinding device and the additive tank 11. The utility model is provided with an additive delivery pump 17, and after the additive is successfully compounded in the starting time of the additive delivery pump 17, the additive is delivered to an additive tank 11 for standby; simultaneously the utility model discloses in still be equipped with additive feed pump 18, start additive feed pump 18 according to the demand of coal grinding device 10 for add the liquid additive in to coal grinding device 10. The utility model can adopt a remote manual control mode or a PLC singlechip control mode, and the control mode is not the key point of the protection of the utility model, so the details are not repeated; when different control modes are adopted, corresponding meters such as a flowmeter, a concentration meter and the like can be adopted to improve the control precision.

When the utility model is used, a plurality of coal grinding devices 10 are respectively in an operating state, solid additives are proportionally put into a proportioning tank 20, desalted water is added according to the proportioning to prepare semi-finished additive solution with certain concentration, the semi-finished additive solution is conveyed into an additive stirring tank 12 through an additive conveying pipeline 22 with a proportioning pump 21 and an additive conveying branch pipeline 23, the desalted water in a desalted water tank 13 determines the amount of the additive solution entering the additive stirring tank 12 according to the amount of the semi-finished additive solution recorded in a second flow meter 25, the concentration of the additives in the additive stirring tank 12 is determined through the second flow meter 25 and a first flow meter 14, whether the liquid additives are compounded qualified or not is determined, the additives enter an additive tank 11 for standby after the liquid additives are compounded qualified, the adding time of the additives is determined according to the requirements of the coal grinding devices 10, the finished product liquid additive in the additive tank 11 accurately and quantitatively enters the coal grinding device 10 for adjusting the viscosity of the coal water slurry. Further, when the additive conveying unit fails and cannot normally operate, the additive stirring tank 12 is underground, so that an operator can conveniently and directly put the solid powder additive into the additive stirring tank 12, and the finished product liquid phase additive is directly compounded in the additive stirring tank 12 by adding desalted water, so that the production requirement of the coal grinding device 10 is met.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "connecting," and the like are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation. The above examples are only specific illustrations of feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments, modifications and alterations without departing from the technical spirit of the present invention are intended to be included in the scope of the present invention.

Claims (6)

1. A coal grinding system comprising at least two independent coal grinding units (1), characterized in that: the coal grinding unit (1) comprises a coal grinding device (10) and an additive tank (11) connected with an additive port of the coal grinding device, and the additive tank (11) is connected with a desalting water tank (13) through an additive stirring tank (12);

the additive stirring tanks (12) in the at least two independent coal grinding units (1) are respectively connected with the additive conveying unit (2);

the additive conveying unit (2) comprises a dosing tank (20) and an additive conveying pipeline (22) with a dosing pump (21), and the additive conveying pipeline (22) is connected with the additive stirring tank (12) through additive conveying branch pipelines (23).

2. A coal grinding system as defined in claim 1 wherein: the additive stirring tank (12) is arranged underground, a stirring device (19) with a motor is arranged in the middle of the top of the additive stirring tank (12), and the top of the additive stirring tank (12) is respectively provided with a desalted water inlet connected with the desalted water tank (13), an additive inlet connected with the additive conveying branch pipeline (23) and an additive outlet connected with the additive tank (11).

3. A coal grinding system as defined in claim 2 wherein: and a first flowmeter (14), a first valve (15) and a desalting water pump (16) are sequentially arranged between the brine inlet and the desalting water tank (13).

4. A coal grinding system as defined in claim 2 wherein: and a second valve (24) and a second flowmeter (25) are arranged between the additive conveying branch pipe (23) and the additive inlet.

5. A coal grinding system as defined in claim 2 wherein: an additive delivery pump (17) is arranged between the additive outlet and the additive tank (11).

6. A coal grinding system as defined in claim 1 wherein: an additive feeding pump (18) is arranged between the additive port of the coal grinding device and the additive tank (11).

Images