CN114673546A - Device and method for inhibiting coal dust and dust inhibiting material - Google Patents

Abstract

The invention relates to the technical field of coal mine dust removal, and provides a device and a method for inhibiting coal dust and a dust inhibiting material. The method comprises the following steps: the spraying pipeline, the circulating pipe and the multifunctional receiving tank are arranged from top to bottom in sequence; the spraying pipeline is used for spraying the dust suppression agent to coal dust; the circulating flow pipe is used for introducing the dust suppression medicament in the multifunctional receiving tank into the spraying pipeline; the bottom of the multifunctional receiving groove is provided with a medicine storage chamber used for storing dust suppression medicines and filtering the mixture of the dust suppression medicines and coal dust to complete the repeated utilization of the dust suppression medicines. The invention has the beneficial effects that: coal dust is generated on a coal face when a coal mining machine cuts coal, the coal dust is quickly covered and adsorbed by a chemical curtain sprayed from a spraying pipeline arranged on a top plate right in front of the coal face when the coal dust just appears, and the coal dust is inhibited when the coal dust just appears but does not flow in a large range, so that advanced dust suppression at the position where the coal dust is generated is realized, the diffusion of the coal dust is reduced, and the current situation that the current dust harms the body health of workers can be relieved.

Description

A device, method and dust suppression material for suppressing coal dust

technical field

The invention relates to the technical field of dust removal in coal mines, in particular to a device, method and dust suppression material for suppressing coal dust.

Background technique

In my country, the underground mining method occupies a dominant position in coal mining. With the rapid development of related technologies, a large number of modern mining machinery has been put into coal mine production and construction, which has greatly improved production efficiency, but also led to the generation of a large amount of coal dust.

At present, the traditional dust removal methods at home and abroad mainly include: coal seam water injection, spray dust removal, dust collector dust removal, foam dust removal, etc. The traditional dust reduction method is that the coal dust diffuses to the fully mechanized mining face and pollutes the working face for dust removal, and the traditional method is to spray water or chemicals manually, which is not advanced, and the work efficiency is extremely low, which greatly reduces the work efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device, method and dust suppression material for suppressing coal dust, so as to solve the technical problems existing in the prior art.

In order to achieve the above object, the technical scheme adopted in the present invention is: a device for suppressing coal dust, comprising: a spray pipe, a circulation pipe and a multi-functional receiving tank arranged in sequence from top to bottom; wherein, the spray pipe is made of for spraying the dust suppression agent to the coal dust; the circulating circulation pipe is connected to the spray pipe and the multi-functional receiving tank, and is used for introducing the dust-suppressing agent in the multi-function receiving tank into the spray pipe; the The multifunctional receiving tank, the bottom of the multifunctional receiving tank is a medicine storage room, which is used to store the dust suppression agent, and filter the mixture of the dust suppression agent and the coal dust to complete the dust suppression agent. Use multiple times.

In an optional embodiment, there are multiple spraying pipes, and the spraying pipes are installed side by side at the top plate directly in front of the coal mining face; The top plate at the rear 10m; the medicine receiving chamber on the upper part of the multifunctional receiving tank is located directly below the spraying pipe.

In an optional embodiment, a row of spray holes is equally spaced below each of the spraying pipes, and a row of return holes is equally spaced on one side of each of the spraying pipes.

In an optional embodiment, a filter screen is arranged between the medicine receiving room and the medicine storage room, a row of drainage holes is arranged on the side wall of the medicine storage room, and a row of the drainage holes is located in the below the filter.

In an optional embodiment, the circulating flow device includes a circulating flow pipe, the upper port of the circulating flow pipe is a water outlet, and the water outlet is connected with the corresponding return eye on the spray pipe by interference; The lower port of the circulation pipe is a water inlet, and the water inlet is connected with the corresponding drainage hole of the multifunctional receiving tank by interference.

In an optional embodiment, the dust-suppressing chemicals sprayed out through the spray holes in the spraying pipe form a relatively dense multi-layer medicine curtain, and the coal dust generated on the coal mining face is fully contacted with the medicine curtain. Absorbs quickly.

In an optional embodiment, the coverage of the dust suppression agent sprayed through the spray holes after the spray pipes are arranged exceeds the range of coal dust generated on the coal mining face when the coal shearer is cutting coal; or, The coverage of the dust-suppressing medicament exceeds the circulation range of the foul wind; the receiving range of the medicine-receiving chamber is larger than the coverage of the dust-suppressing medicament sprayed from the spraying hole.

On the other hand, the present invention also provides a method for using the device for suppressing coal dust as described above, which includes the following steps: Step 1, put the sponge into a crusher to crush, and then grind and sieve it to a size of 200 mesh. , and then put each raw material into the mixer according to the predetermined proportion, fully mix and stir, and prepare the dust suppression agent; step 2, install the spray pipes side by side on the roof corresponding to the coal mining face, and the The multi-functional receiving tank is arranged and fixed on the bottom plate, and the two are connected by the circulating flow device, and the dust suppression agent is injected into the multi-functional receiving tank; the dust suppression agent enters from the return eye through the circulating flow device. In the spraying pipe, the dust suppression agent is sprayed out through the spray holes to form a drug curtain and fully contact with the coal dust generated at the coal mining face during the coal cutting process of the shearer, so that the coal dust is quickly and advanced adsorbed; step 3. The adsorbed mixture of the dust suppression agent and coal dust falls vertically into the medicine receiving chamber, and the mixture enters the medicine storage room after being physically adsorbed by the filter; The dust suppression agent in the medicine storage chamber is relatively pure, and the dust suppression agent is re-transported into the circulation device through the discharge eye, and step 1 is repeated.

On the other hand, the present invention also provides a dust suppressing material applied to the above-mentioned device for suppressing coal dust, or a method for using the above-mentioned device for suppressing coal dust, the composition of the dust-suppressing material is in volume percentage , including: 2%-5% anionic surfactant, 2%-5% cationic surfactant, 10%-20% sponge scraps, 2%-5% tween and 55%-84% water.

In an optional embodiment, the anionic surfactant is sodium dodecylbenzenesulfonate; the cationic surfactant is dodecyltrimethylammonium chloride; the Tween is Tween 80; The water is deionized water or distilled water.

The beneficial effects of the present invention are:

(1) When the shearer cuts coal, coal dust is generated on the coal mining face. When the coal dust just appears, it is quickly covered and adsorbed by the spray curtain sprayed from the spray pipe installed on the top plate in front of the coal mining face. It is suppressed before large-scale flow occurs, which realizes advanced dust suppression at the place where coal dust is generated, reduces the diffusion of coal dust, and can alleviate the current situation that dust harms the health of workers. In addition, with the cooperation and support of the filter screen and the circulating circulator, the resources of the dust suppression agent can be recycled, which reduces the loss of energy and reduces the economic burden.

(2) The dust suppression material is made by mixing anionic and cationic surfactants. The main principle is that after the anionic and cationic surfactants are compounded, the electrostatic force between the compound system and the coal dust is reduced. , which will greatly improve the adsorption effect of coal dust, making the coal dust more wettable. At the same time, the porous structure of the sponge debris powder is used for physical adsorption, which can more effectively and quickly reduce dust.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a spray pipe in a device for suppressing coal dust provided by an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a circulating flow device in a device for suppressing coal dust provided by an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a multifunctional receiving tank in a device for suppressing coal dust provided by an embodiment of the present invention.

Fig. 4 is a schematic diagram of the arrangement position of the dust suppression equipment in the level roadway of the mine section in the device for suppressing coal dust provided by an embodiment of the present invention.

Among them, the reference signs in the figure are: 1, spray pipe; 2, return eye, 3, spray hole, 4, circulating flow device, 5, water outlet, 6, circulating circulation pipe, 7, water inlet, 8, more Function receiving tank, 9. Medicine receiving room, 10. Filter screen, 11. Medicine storage room, 12. Drainage eye, 13. Transport level road, 14. Fresh air flow, 15. Caving area, 16. Coal mining face , 17, dirty wind, 18, advanced support of the return air level road, 19, the installation of the dust suppression device, 20, the return air level road, 21, the fresher wind.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. Terms "top", "bottom", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outer" etc. The indicated orientation or position is based on the orientation or position shown in the drawings, which is only for the convenience of description, and should not be construed as a limitation on the technical solution. The terms "first" and "second" are only used for the purpose of description, and should not be construed as indicating or implying relative importance or implying the number of technical features. "Plurality" means two or more, unless expressly specifically limited otherwise.

Example 1

Please refer to Figures 1-3. The purpose of this embodiment is to provide a device for suppressing coal dust, including: a spray pipe 1, a circulation pipe 6 and a multifunctional receiving tank 8 arranged in sequence from top to bottom; wherein, The spraying pipe 1 is used for spraying the dust suppression agent to the coal dust; the circulating circulation pipe 6 is connected to the spraying pipe 1 and the multi-functional receiving tank 8, and is used for introducing the dust-suppressing agent in the multi-functional receiving tank 8 into the spraying pipe 1; Functional receiving tank 8. The bottom of the multi-functional receiving tank 8 is a medicine storage room 11, which is used to store dust suppression agents and filter the mixture of dust suppression agents and coal dust to complete the multiple utilization of dust suppression agents.

Specifically, a plurality of spray pipes 1 are provided, and are installed side by side at the top plate directly in front of the coal mining face 16. Preferably, the spray pipes 1 are fixed to the top plate using steel sheet rivets, and the bottom of each spray pipe 1 is equally spaced. A row of spray holes 3 is provided, and one side of each spray pipe 1 is provided with a row of return holes 2 at equal distances. The upper part of the multi-functional receiving tank 8 is the medicine receiving room 9, and a filter screen 10 is arranged between the medicine receiving room 9 and the medicine storage room 11. The filter screen 10 is made of porous material, and the porous material is activated carbon or cotton The dust suppression agent in the lower medicine storage chamber 11 is still relatively pure. A row of drainage holes 12 is provided on the side wall of the medicine storage chamber 11 , and a row of drainage holes 12 is located below the filter screen 10 . The circulation device 4 includes a circulation pipe 6, the upper port of the circulation pipe 6 is the water outlet 5, and the water outlet 5 is connected with the corresponding return eye 2 on the spray pipe 1 by interference; the lower port of the circulation pipe 6 is The water inlet 7 is connected with the corresponding drainage hole 12 of the multifunctional receiving tank 8 by interference.

It should be noted that the dust-suppressing agents sprayed through the spray holes 3 in the spray pipe 1 form a relatively dense multi-layer drug curtain. Press vertically and spray downward to form a relatively dense drug curtain. The coal dust generated during the coal cutting process of the shearer is fully contacted with the drug curtain and quickly adsorbed; the circulating flow power required by the dust suppression agent is completely provided by the electricity inside the mine.

Further, the dust suppression agent is transported from the lower part of the multi-function receiving tank 8 to the return eye 2 of the spray pipe 1 through the circulation circulator 6, and then enters the spray pipe 1. The multi-layer drug curtain is mainly composed of chemical agents to form a dust suppressant. Therefore, in the process of downward flow, the coal dust generated at the first time of the coal mining face is adsorbed, so that the coal dust settles at the place where it is generated, and does not enter the rest of the working face, so as to achieve advanced dust control. It is worth mentioning that the coverage of the dust suppression agent sprayed through the spray holes 3 after the spray pipes 1 are arranged exceeds the range of coal dust generated when the shearer cuts coal; On the outside of the surface, the medicine receiving chamber 9 is located directly below the spraying pipe 1 , and the receiving area of the medicine receiving chamber 9 is larger than the coverage area of the dust suppression agent sprayed by the spray hole 3 .

In an optional embodiment, please refer to FIG. 4 , the fresh air flow 14 passes through the coal mining face 16 through the transport road 13, and a large amount of coal dust generated at the coal mining face (16) during the coal cutting process of the shearer is in the fresh air. Under the action of wind flow (14), when it is transported to the installation place 19 of the dust suppression device 10m behind the advance support 18 of the return air level road, the fresh wind flow 14 is mixed with the coal dust to generate the dirty wind 17, and the coal dust carried in the dirty wind 17 is mixed with the dust. The multi-layer medicine curtain is fully contacted and quickly adsorbed to obtain a fresh air flow 21 , which greatly reduces the content of coal dust discharged into the air flow in the return air level road 20 . It should be noted that the coverage of the dust suppression agent exceeds the flow range of the foul wind 17. At this time, the spray pipe 1 and the multifunctional receiving tank 8 are arranged at the top and bottom plates 10m behind the advance support 18 of the return air level road.

Embodiment 2

Please refer to the accompanying drawings 1-4, the purpose of this embodiment is to provide a method for using the device for suppressing coal dust in the above embodiments, including the following steps:

Step 1, put the sponge into the crusher to be crushed, then grind and sieve to a size of 200 meshes, then put each raw material into the mixer according to a predetermined ratio, fully mix and stir, and prepare a dust suppressant;

Step 2, the spray pipes 1 are connected side by side to the top plate corresponding to the coal mining face 16, the multi-functional receiving tank 8 is placed and fixed on the bottom plate, the two are connected by the circulating flow device 4, and the multi-functional receiving tank 8 is injected into the multi-functional receiving tank 8. Dust-suppressing agent; dust-suppressing agent enters into spraying pipe 1 from return eye 2 through circulating circulator 8, and dust-suppressing agent is sprayed through spraying hole 3 to form a drug curtain, and is in 16 places on the coal mining face during coal cutting with the shearer. The generated coal dust is fully contacted, so that the coal dust can be adsorbed quickly and in advance;

Step 3, the mixture of the adsorbed dust suppressant and coal dust vertically falls into the medicine receiving room 9, and enters the medicine storage room 11 after the mixture is physically adsorbed by the filter screen 10;

Step 4, through the filtration of step 3, the dust suppression agent entering the drug storage chamber 11 is relatively pure, and the dust suppression agent is re-transported to the circulation device 4 through the discharge eye 12, and the step 1 is repeated to make the whole process. It becomes a recyclable device, which can save resources and reduce the number of replacements of dust suppression agents.

Embodiment 3

The purpose of this embodiment is to provide a dust-suppressing material, which is applied to the apparatus for suppressing coal dust in the above embodiments, or a method for using the apparatus for suppressing coal dust in the above embodiments, and the components of the dust-suppressing material , by volume percentage, including: 2% to 5% anionic surfactant, 2% to 5% cationic surfactant, 10% to 20% sponge debris, 2% to 5% tween and 55% to 84% water . Preferably, the anionic surfactant is sodium dodecylbenzenesulfonate; the cationic surfactant is dodecyltrimethylammonium chloride; Tween is Tween 80; and water is deionized water or distilled water.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. A device for suppressing coal dust, characterized in that it comprises: a spray pipe (1), a circulation pipe (6) and a multifunctional receiving tank (8) arranged in sequence from top to bottom; wherein, The spraying pipe (1) is used for spraying the dust suppressant to the coal dust; The circulation pipe (6) is connected to the spraying pipe (1) and the multifunctional receiving tank (8), and is used for introducing the dust suppression agent in the multifunctional receiving tank (8) into the spraying pipe (1); In the multifunctional receiving tank (8), the bottom of the multifunctional receiving tank (8) is a medicine storage room (11), which is used to store the dust suppression agent and filter the dust suppression agent and the coal dust The mixture can complete the multiple utilization of the dust suppression agent. 2 . The device for suppressing coal dust according to claim 1 , wherein a plurality of spray pipes ( 1 ) are provided, and the spray pipes ( 1 ) are installed side by side in front of the coal mining face ( 16 ). 3 . Or, the spray pipes (1) are installed side by side at the top plate at 10m behind the advance support (18) of the return air level road; the medicine receiving room ( 9) Located directly below the spray pipe (1). 3. The device for suppressing coal dust according to claim 2, characterized in that, a row of spray holes (3) are equally spaced below each of the spray pipes (1), and each of the spray pipes (1) is provided with a row of spray holes (3). ) is provided with a row of reflux eyes (2) at equal intervals. 4. The device for suppressing coal dust according to claim 3, characterized in that a filter screen (10) is provided between the medicine receiving chamber (9) and the medicine storage chamber (11), and the medicine storage A row of drainage holes (12) is provided on the side wall of the chamber (11), and a row of the drainage holes (12) is located below the filter screen (10). 5. The device for suppressing coal dust according to claim 4, characterized in that the circulation flow device (4) comprises a circulation circulation pipe (6), and the upper port of the circulation circulation pipe (6) is a water outlet (5), the water outlet (5) is connected by interference with the corresponding return eye (2) on the spray pipe (1); the lower port of the circulation pipe (6) is the water inlet ( 7), the water inlet (7) is connected with the corresponding drainage hole (12) of the multifunctional receiving tank (8) by interference. The device for suppressing coal dust according to claim 5, characterized in that, the dust suppressing agents sprayed out through the spray holes (3) in the spray pipe (1) form relatively dense multi-layers The drug curtain, the coal dust generated by the coal mining face (16) is fully contacted with the drug curtain and quickly adsorbed. 7. The device for suppressing coal dust according to claim 6, characterized in that, after the spraying pipes (1) are arranged, the coverage of the dust suppressing agent sprayed through the spraying holes (3) exceeds all The range of coal dust generated by the coal working face (16) when the shearer cuts coal; or, the coverage of the dust suppression agent exceeds the circulation range of the dirty wind (17); The range is larger than the coverage range of the dust suppression agent sprayed from the spray hole (3). 8. A method for using the device for suppressing coal dust as claimed in any one of claims 1-7, characterized in that it comprises the following steps: Step 1, put the sponge into the crusher to be crushed, then grind and sieve it to a size of 200 mesh, and then put the raw materials into the mixer according to the predetermined ratio, fully mix and stir, and prepare the dust suppression agent; In step 2, the spray pipes (1) are installed side by side on the top plate corresponding to the coal mining face (16), the multifunctional receiving tank (8) is arranged and fixed on the bottom plate, and the circulating flow device (4) is used. Connect the two, and inject the dust-suppressing agent into the multifunctional receiving tank (8); the dust-suppressing agent enters the spray pipe (1) from the return eye (2) through the circulation device (8) ), the dust suppression agent is sprayed through the spray hole (3) to form a drug curtain and fully contacts the coal dust generated at the coal mining face (16) during the coal cutting process of the shearer, so that the coal dust quickly advances adsorption; Step 3, the adsorbed mixture of the dust suppressant and coal dust vertically falls into the medicine receiving chamber (9), and then enters the medicine storage chamber (11) after being physically adsorbed by the mixture through the filter screen (10); Step 4, through the filtration of step 3, the dust suppression agent entering the drug storage chamber (11) is relatively pure, and the dust suppression agent is re-transported to the circulation device (12) through the drainage eye (12). 4), repeat step 1. 9. A dust suppression material, characterized in that it is applied to the device for suppressing coal dust according to any one of claims 1 to 7, or to a method of using the device for suppressing coal dust according to claim 8, The components of the dust suppression material, in percent by volume, include: 2%-5% anionic surfactant, 2%-5% cationic surfactant, 10%-20% sponge debris, 2%-5% tween and 55%-84% water. 10. The dust suppression material according to claim 9, wherein the anionic surfactant is sodium dodecylbenzenesulfonate; the cationic surfactant is dodecyltrimethylammonium chloride ; Described Tween is Tween 80; Described water is deionized water or distilled water.

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