CN104880353B - A kind of multichannel air-flow uniform wet coal sample device - Google Patents

Abstract

The invention discloses a device for evenly wetting coal samples by multi-channel air flow, which comprises a water ultrasonic atomizer, a multi-channel coal sample chamber, a humidity monitor, a condenser and a extraction pump; the water ultrasonic atomizer is provided with a water inlet and The air inlet is connected to the multi-channel coal sample chamber through pipelines and control valves. The multi-channel coal sample chamber is divided into multiple independent spaces, and each space is connected to the water ultrasonic atomizer separately through the control valve and the pipeline. It is connected with the condenser; the humidity monitor is installed on the multi-channel coal sample chamber, which can monitor the humidity inside each independent space of the multi-channel coal sample chamber; the condenser can condense the water mist into water and discharge it through the drain valve. It is suitable for granular coal and pulverized coal as well as lump coal and briquette, can evenly wet coal samples, and can obtain coal samples with different moisture content through the humidity monitor. Multiple coal samples with the same moisture content can be obtained at one time, and multiple coal samples with different moisture content can also be obtained at one time. It has reasonable structure, convenient operation and good wetting effect.

Description

A multi-channel airflow uniform wetting coal sample device

technical field

The invention relates to a coal sample wetting device, in particular to a multi-channel gas flow uniform wetting coal sample device suitable for research on the characteristics of water-containing coal bodies.

Background technique

With the development of coal mine technology, the characteristics of water-bearing coal have become the research object of more and more coal workers, but in terms of the current field technology, it is difficult to obtain water-containing coal samples that meet our needs, so how to wet the coal How to meet the needs of scientific research has become a difficult problem for scientific researchers.

At present, there are many methods for obtaining water-containing coal samples, such as preparation of balanced water coal samples, immersing coal bodies in water, injecting water into coal samples, etc. However, these methods basically have various defects. Firstly, the water content of the coal sample cannot be controlled by using the method of preparing the equilibrium water coal sample; secondly, soaking the coal body in water will cause the coal body to become soft and change its properties and cannot ensure the uniform distribution of water in the coal body; thirdly, the coal body Although the sample water injection can obtain coal samples with different moisture content, and the water can be evenly distributed in the coal samples by stirring, but it is not suitable for large coal bodies and briquettes. Therefore, it is urgent to find a new wetting device, which is not only suitable for coal samples of different sizes, but also can obtain coal samples with different moisture contents according to the research needs and the moisture in the coal samples is evenly distributed.

Contents of the invention

Technical problem: The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a device with simple structure, strong adaptability, and good effect of using multi-channel airflow to evenly wet coal samples.

Technical solution: The multi-channel airflow uniform wetting coal sample device of the present invention includes a water ultrasonic atomizer, a multi-channel coal sample chamber, a humidity monitor, a condenser and a extraction pump; the water ultrasonic atomizer is equipped with There is a water inlet connected to the water circuit and an air inlet connected to the gas circuit; the water ultrasonic atomizer is connected to the multi-channel coal sample chamber pipeline, the multi-channel coal sample chamber is connected to the mouth condenser pipeline, and the condenser connected to the extraction pump through pipelines; the multi-channel coal sample chamber is divided into multiple independent spaces through partitions, and each space is connected to a water ultrasonic atomizer and a condenser through control valves and pipelines; The humidity monitor described above is installed on the multi-channel coal sample chamber, and can monitor the humidity inside each independent space of the multi-channel coal sample chamber; The micro-water particles continuously flow into the multi-channel coal sample chamber, and the ultra-fine water particles flowing out of the multi-channel coal sample chamber are drawn into the condenser, and the condensed water is discharged through the drain valve at the lower part of the condenser.

The water ultrasonic atomizer adopts an ultrafine water particle wave atomizer capable of crushing liquid water into a diameter less than 0.10 μm.

The plurality of independent spaces is 3 to 8.

Beneficial effects: due to the adoption of the above technical solution, the present invention is applicable to granular coal, pulverized coal, block coal or molded coal, and can obtain coal samples with different moisture contents and evenly distributed moisture. The atomized water technology adopted can evenly wet the coal sample, and the coal sample with different moisture content can be obtained through the humidity monitor. The invention can obtain multiple coal samples with the same water content at one time, and can also obtain multiple coal samples with different water content at one time, is suitable for coal samples of different sizes, and can ensure that the moisture in the coal samples is evenly distributed. Greatly improved work efficiency. The utility model has the advantages of simple structure, convenient operation, good wetting effect and good practicability.

Description of drawings

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

In the figure, 1, water ultrasonic atomizer; 2, multi-channel coal sample chamber; 3, humidity monitor; 4, condenser; 5, extraction pump; 6, water inlet; 7, air inlet; 8, tube 9. Control valve; 10. Partition; 11. Drain valve.

detailed description

An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

The multi-channel airflow uniform wetting coal sample device of the present invention is mainly composed of a water ultrasonic atomizer 1 , a multi-channel coal sample chamber 2 , a humidity monitor 3 , a condenser 4 and a drainage pump 5 . The water ultrasonic atomizer 1 is provided with a water inlet 6 connected to the water circuit, and an air inlet 7 connected to the gas circuit. The water ultrasonic atomizer 1 communicates with the multi-channel coal sample through the pipeline 8 and the control valve 9. The chambers 2 are connected, and the water ultrasonic atomizer 1 adopts an ultra-fine water particle wave atomizer capable of crushing liquid water into diameters less than 0.10 μm, capable of crushing liquid water into ultra-fine water particles with a diameter of less than 0.10 μm. Particles are used as a wetting medium; the multi-channel coal sample chamber 2 is divided into multiple independent spaces, and the number of multiple independent spaces is 3 to 8, which is set according to actual needs. , each space is connected to the water ultrasonic atomizer 1 and the condenser 4 respectively through the control valve 9 and the pipeline 8; the humidity monitor 3 is installed on the multi-channel coal sample chamber 2, and can monitor the multi-channel coal The humidity inside each independent space of the sample chamber 2; one end of the condenser 4 is connected with the multi-channel coal sample chamber 2, and the other end is connected with the extraction pump 5, which can condense the water mist into water and discharge it through the drain valve 11; the extraction pump 5 The ultra-fine water particles formed in the water ultrasonic atomizer 1 continuously flow into the multi-channel coal sample chamber 2 through its extraction negative pressure, and the ultra-fine water particles flowing out of the multi-channel coal sample chamber 2 are drawn into the condenser 4 . The multi-channel coal sample chamber 2 is divided into 6 independent spaces through partitions, as shown in FIG. 1 . During operation, the humidity in each independent space in the multi-channel coal sample chamber 2 can be controlled by adjusting the opening degree of the control valve 9 .

Working process: first put the coal sample into the multi-channel coal sample chamber 2, turn on the humidity monitor 3, and set the humidity. Then the water inlet 6 and the air inlet 7 are respectively connected with the water source and the air source, and the water ultrasonic atomizer 1 is started, and now water and air flow into the water ultrasonic atomizer 1 through the water inlet 6 and the air inlet 7 respectively. , and form ultra-fine water particles therein as the wetting medium; then open the control valve 9 connected to the independent space of the coal sample in the extraction pump 5 and the multi-channel coal sample chamber 2, so that the water in the ultrasonic atomizer 1 The ultra-fine water particles continuously flow into the multi-channel coal sample chamber 2 to wet the coal sample, and the ultra-fine water particles that have not been absorbed by the coal sample flow out from the multi-channel coal sample chamber 2 and flow into the condenser 4 to be condensed into water by the drain valve 11 discharge. Afterwards, by adjusting the opening degree of the control valve 9, the humidity in the multi-channel coal sample chamber 2 reaches and remains at the set value; the time of each wetting is determined by the shape and size of the coal sample, and the wetting ends After that, take out the coal sample for later use.

Claims (3)

1. A multi-channel airflow uniform wetting coal sample device, characterized in that it includes a water ultrasonic atomizer (1), a multi-channel coal sample chamber (2), a humidity monitor (3), and a condenser (4) and a drainage pump (5); the water ultrasonic atomizer (1) is provided with a water inlet (6) connected to the water circuit and an air inlet (7) connected to the gas circuit; the water ultrasonic atomizer The vaporizer (1) is connected to the pipeline of the multi-channel coal sample chamber (2), the multi-channel coal sample chamber (2) is connected to the pipeline of the outlet condenser (4), and the condenser (4) is connected to the extraction pump (5) through the pipeline. ) connected; the multi-channel coal sample chamber (2) is divided into multiple independent spaces through the partition (10), and each space is separately connected to the water ultrasonic atomization through the control valve (9) and the pipeline (8). The device (1) is connected to the condenser (4); the humidity monitor (3) is installed on the multi-channel coal sample chamber (2), and can monitor the humidity inside each independent space of the multi-channel coal sample chamber (2) ; The extraction negative pressure of the extraction pump (5) makes the ultra-fine water particles formed in the water ultrasonic atomizer (1) continuously flow into the multi-channel coal sample chamber (2), and the multi-channel coal sample The ultra-fine water particles flowing out of the chamber (2) are pumped into the condenser (4), and the condensed water is discharged through the drain valve (11) at the lower part of the condenser (4); when working, first put the coal sample into the multi-channel coal In the sample chamber (2), turn on the humidity monitor (3) and set the humidity; then connect the water inlet (6) and the air inlet (7) to the water source and the air source respectively, and start the water ultrasonic atomizer (1 ), water and air flow into the water ultrasonic atomizer (1) through the water inlet (6) and the air inlet (7) respectively at this time, and form ultrafine water particles therein as the wetting medium; then turn on the extraction pump (5) and the control valve (9) connected to the independent space of the coal sample in the multi-channel coal sample chamber (2), so that the ultrafine water particles in the water ultrasonic atomizer (1) continuously flow into the multi-channel coal sample The chamber (2) de-wets the coal sample, and the ultrafine water particles that have not been absorbed by the coal sample flow out from the multi-channel coal sample chamber (2) flow into the condenser (4) to condense into water and be discharged by the drain valve (11); Afterwards, by adjusting the opening degree of the control valve (9), the humidity in the multi-channel coal sample chamber (2) reaches and remains at the set value; the time of each wetting is determined by the shape and size of the coal sample, etc. After wetting, take out the coal sample for later use. 2. A multi-channel airflow uniform wetting coal sample device according to claim 1, characterized in that: the water ultrasonic atomizer (1) adopts an ultra-sonic atomizer capable of crushing liquid water into a diameter less than 0.10 μm Micro water particle wave nebulizer. 3. A multi-channel gas flow uniform wetting coal sample device according to claim 1, characterized in that: said plurality of independent spaces is 3-8.