阅读说明：本技术 浮沉实验分级重液调配方法及其系统 (Grading heavy liquid blending method and system for sink-float experiment ) 是由 武宾宾 王莹 孙建军 李鹏 王瑞 王博 张风宾 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种浮沉实验分级重液调配方法及其系统,浮沉分离器连通分流阀,分流阀的多个分流通道对接不同密度级别重液桶,控制分流阀的分流通道与相应密度级别重液桶连通,在液泵的压力作用下使重液注入浮沉分离器,空压机产生的空气对浮沉分离器内的重液进行气动搅拌,需要某一密度重液时,通过控制分流阀对接相应密度级重液桶,可实现对各密度级重液的调配、搅拌、补充和回收等工艺过程,大大简化重液系统及其阀门数量,杜绝了重液混杂,提升浮沉实验的准确性。(The invention discloses a grading heavy liquid blending method and a grading heavy liquid blending system for a sink-float experiment, wherein a sink-float separator is communicated with a splitter valve, a plurality of splitter channels of the splitter valve are in butt joint with heavy liquid barrels with different density grades, the splitter channels of the splitter valve are controlled to be communicated with the heavy liquid barrels with corresponding density grades, heavy liquid is injected into the sink-float separator under the pressure action of a liquid pump, air generated by an air compressor is used for pneumatically stirring the heavy liquid in the sink-float separator, and when a certain density heavy liquid is needed, the splitter valve is controlled to be in butt joint with the heavy liquid barrels with corresponding density grades, so that the technological processes of blending, stirring, supplementing, recovering and the like of the heavy liquid with each density grade can be realized, the heavy liquid system and the number of valves thereof are greatly simplified, the heavy liquid is prevented from being mixed.)

1. A method for blending heavy liquid for classification in a sink-float experiment is characterized by comprising the following steps: the flow dividing channel of the control flow dividing valve is communicated with the heavy liquid barrel with the corresponding density grade, heavy liquid is injected into the floating-sinking separator under the pressure action of the liquid pump, and air generated by the air compressor is used for pneumatically stirring the heavy liquid in the floating-sinking separator.

2. The method for blending heavy liquid for flotation and sinking experiment classification according to claim 1, which is characterized in that: when the density of the heavy liquid is too high, water is supplemented into the heavy liquid barrel through a flow dividing valve by using a water pump; when the density of the heavy liquid is too low, the heavy liquid in the high-density container is replenished into the heavy liquid barrel through the flow dividing valve.

3. The method for blending heavy liquid for flotation and sinking experiment classification according to claim 2, wherein the method comprises the following steps: and after the make-up water or make-up liquid enters the heavy liquid barrel, blowing and stirring the heavy liquid barrel by using an air compressor through a flow divider valve.

4. The method for blending heavy liquid for flotation and sinking experiment classification according to claim 1, which is characterized in that: after the separation of the floating objects is completed, the generated separation liquid or recovery liquid is circulated back to the heavy liquid barrel through the flow dividing valve.

5. The utility model provides a hierarchical heavy liquid allotment system of floating and sinking experiment which characterized in that includes:

heavy liquid barrels having different density levels;

the flow dividing valve is provided with a main flow interface and a flow dividing channel communicated with the heavy liquid barrels with different density grades;

the floating and sinking separator is used for separating floating objects and heavy liquid;

and the main flow interface of the flow divider is respectively communicated with the sink-float separator through a multi-way pipeline.

6. The system for blending heavy liquid for floating and sinking experiment classification according to claim 5, wherein: and a main flow interface of the flow divider is respectively communicated with the water pump, the high-density container, the air compressor, the muddy water tank or the heavy liquid collector through pipelines.

7. The system for blending heavy liquid for floating and sinking experiment classification according to claim 6, wherein: the pipeline is provided with a liquid pump which is a diaphragm pump, a centrifugal pump, a plunger pump or a gear pump.

Technical Field

The invention belongs to the field of sink-float experiments, and particularly relates to a method and a system for inputting, supplementing, recovering and stirring heavy liquids with different density levels to achieve flexible blending when the method and the system are applied to sink-float experiments.

Background

The float-sink experiment is mainly applied to the coal industry, the experiment needs a plurality of heavy liquids with different densities to carry out float separation on coal, and then the heavy liquids with different densities need to be added into a float-sink separation device and recycled.

At present, heavy liquid of various density levels required by a coal floating and sinking experiment is prepared in advance and then is filled in heavy liquid barrels, and each heavy liquid barrel is connected with a valve through a pipeline no matter the heavy liquid is recovered or supplemented. When a certain heavy liquid needs to be replenished or recovered, the corresponding valve is opened, and then the heavy liquid is pumped.

Disclosure of Invention

The invention aims to provide a method and a system for allocating heavy liquid in a floating and sinking experiment grading manner, which can simplify a heavy liquid pipeline system, allocate heavy liquid of different dense grades in real time and avoid heavy liquid of each grade from being mixed.

In order to achieve the above purpose, the invention adopts the technical scheme that: a grading heavy liquid blending method for a sink-float experiment is characterized in that a flow dividing channel of a flow dividing valve is controlled to be communicated with a heavy liquid barrel with a corresponding density grade, heavy liquid is injected into a sink-float separator under the pressure action of a liquid pump, and air generated by an air compressor is used for pneumatically stirring the heavy liquid in the sink-float separator.

Preferably, when the density of the heavy liquid is too high, water is supplemented to enter the heavy liquid barrel through the flow dividing valve by using the water pump; when the density of the heavy liquid is too low, the heavy liquid in the high-density container is replenished into the heavy liquid barrel through the flow dividing valve.

Preferably, after the make-up water or the make-up liquid enters the heavy liquid barrel, the air compressor blows air into the heavy liquid barrel through the flow dividing valve for stirring.

Preferably, after the separation of the floes is completed, the produced separation liquid or recovery liquid is circulated back to the heavy liquid tank through the flow dividing valve.

The technical scheme adopted by the invention is as follows: a hierarchical heavy liquid allotment system of sinking and floating experiment, includes: heavy liquid barrels having different density levels; the flow dividing valve is provided with a main flow interface and a flow dividing channel communicated with the heavy liquid barrels with different density grades; the floating and sinking separator is used for separating floating objects and heavy liquid; and the main flow interface of the flow divider is respectively communicated with the sink-float separator through a multi-way pipeline.

Preferably, a main flow interface of the flow dividing valve is respectively communicated with a water pump, a high-density container, an air compressor, a mud water tank or a heavy liquid collector through pipelines.

Preferably, the pipeline is provided with a liquid pump, and the liquid pump is a diaphragm pump, a centrifugal pump, a plunger pump or a gear pump.

By implementing the technical scheme of the invention, each diversion channel of the diversion valve is respectively connected to each density-level container, and when heavy liquid with a certain density is needed, the diversion valve is controlled to be in butt joint with the heavy liquid barrel with the corresponding density level, so that the technical processes of blending, stirring, supplementing, recovering and the like of the heavy liquid with each density level can be realized, the heavy liquid system and the number of valves thereof are greatly simplified, heavy liquid mixing is avoided, and the accuracy of a sink-float experiment is improved.

Drawings

Fig. 1 is a schematic structural diagram of a grading heavy liquid blending system for a sink-float experiment.

In the figure: 1-a flow divider, 2-a heavy liquid barrel, 3-a diaphragm pump, 4-an air compressor, 5-a heavy liquid collector, 6-a diaphragm pump, 7-a high-density container, 8-a muddy water tank, 9-a water pump, 10-a floating-sinking separator, 11-a coal floating disc, 12-a gangue disc, 13-a diaphragm pump and 14-a diaphragm pump.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the grading heavy liquid blending system for the float-sink experiment mainly comprises a heavy liquid barrel 2, a diverter valve 1, a float-sink separator 10, a gangue pan 12, a float coal pan 11 and a heavy liquid collector 5.

Six heavy liquid barrels 2 are arranged, and the density levels of the heavy liquid barrels are different and are respectively 1.3 density level, 1.4 density level, 1.5 density level, 1.6 density level, 1.7 density level and 1.8 density level.

Six branches are led out from a main flow interface of the flow divider: one branch is connected to the sink-float separator through a diaphragm pump and a pneumatic control ball valve; one branch is connected with a water pump through a pneumatic control ball valve; one branch is connected to a high-density container through an electric ceramic valve of a diaphragm pump; one branch is connected with an air compressor through a pneumatic control ball valve; one path is connected with a mud water tank of the floating-sinking separator through a diaphragm pump and a pneumatic control ball valve; and the last path is connected with a heavy liquid collector through a diaphragm and a pneumatic control ball valve respectively.

Each shunt channel of the shunt valve is respectively connected into each density level heavy liquid barrel and is branched into six branches through a pipeline, and the six branches are respectively: a first loop connecting the diaphragm pump 13 to the main body of the sink-float separator 10, a second loop connecting the diaphragm pump 6 to the high-density container 7, a third loop connecting the diaphragm pump 6 to the air compressor 4, a fourth loop connecting the diaphragm pump 14 to the bottom of the sink-float separator 10, and a sixth loop connecting the diaphragm pump 3 to the collector 5.

The floating-sinking separator, the heavy liquid barrel and the high-density container are provided with an online densimeter and an online liquid level meter.

Taking 1.3 density-level heavy liquid as an example, the working process of the grading heavy liquid blending method of the sink-float experiment is as follows:

1. controlling a valve core of the flow divider 1 to be switched to a main flow channel of the heavy liquid of 1.3 density levels, opening a diaphragm pump 13 on a heavy liquid supplementing pipeline, and injecting the heavy liquid into the sink-float separator 10;

2. the diaphragm pump 13 is closed when the on-line liquid level meter on the floating-sinking separator 10 detects a proper liquid level;

3. the floating-sinking separator 10 is started, and the heavy liquid and the float coal in the floating-sinking separator 10 are pneumatically stirred by the air generated by the air compressor 4;

4. after the separation of the density-level float coal is completed, the float coal containing heavy liquid enters the float coal tray 11, and the waste liquid enters the gangue tray 12 and the muddy water tank 8. A diaphragm pump 14 on the heavy liquid recovery port is started, and the heavy liquid returns to a heavy liquid barrel 2 of 1.3 density grade through a flow divider 1; similarly, the diaphragm pump 3 on the heavy liquid collector 5 is started, and the heavy liquid returns to the heavy liquid barrel 2 of 1.3 density grade through the flow dividing valve 1.

After many times of floating and sinking, the density of the heavy liquid deviates from the required experimental value, and the heavy liquid has corresponding loss. The online densimeter can detect the density value of the heavy liquid barrel in real time, if the density is too high, the water pump 9 is opened, water can be supplemented to the heavy liquid barrel 2 through the flow divider 1, and the water pump 9 is closed after the requirement of an experimental numerical value is met; if the density of the heavy liquid is too low, the diaphragm pump 6 connected with the high-density container 7 is opened, the high-density heavy liquid supplements the high-density heavy liquid to the heavy liquid in the 1.3-density heavy liquid barrel 2 through the flow dividing valve 1, and the diaphragm pump 6 is closed after the requirement of the experimental numerical value is met.

After supplementing water or high-density heavy liquid, the air compressor 4 is started, air enters the 1.3-level density heavy liquid barrel 2 through the diverter valve 1, and the heavy liquid which is just mixed is blown and stirred to be rapid and uniform.

When the next density level heavy liquid is needed or needs to be prepared and stirred, the flow dividing valve 1 is controlled to be communicated with the corresponding density level heavy liquid barrel 2 and the sink-float separator 10, and the steps are repeated.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.