A filtering device for gas extraction in coal mines

Abstract

The present application provides a filtering device for gas extraction in coal mines, which relates to the technical field of gas extraction and filtering, including a filtering chamber, an air inlet is provided on one side of the filtering chamber, an air outlet is provided on the top of the filtering chamber, a water inlet pipe is connected to one side of the filtering chamber, one end of the water inlet pipe extends into the filtering chamber and is connected to an atomizing nozzle, the atomizing nozzle is located above the air inlet, a filtering assembly is provided in the filtering chamber, and the filtering assembly is located below the air inlet. When the utility model is used, the air outlet is connected to the extraction equipment through an extraction pipeline, and water mist is sprayed into the interior of the filtering chamber through the atomizing nozzle to contact the gas entering the filtering chamber. At this time, the coal slag in the gas increases its own weight after contacting the water mist, falls downward, and separates from the gas. Finally, the gas enters the next step from the air outlet, which effectively avoids the coal slag in the gas from entering the extraction pipeline or the extraction equipment and gradually accumulating to cause blockage, thereby ensuring the normal passage of the gas and the gas extraction efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of gas extraction and filtration, and in particular to a filtering device for gas extraction in underground coal mines. Background Art

[0002] Gas is a non-toxic, odorless, colorless, flammable and explosive gas. It is an unconventional natural gas produced from coal seams with methane as its main component. The exploitation of its resources is of great significance for reducing coal mine gas explosion accidents, expanding natural gas supply, and reducing environmental pollution.

[0003] However, in the process of gas extraction in coal mines, some coal slag is easily extracted together. This part of coal slag gradually accumulates on the inner wall of the extraction pipeline or inside the extraction equipment, which can easily cause blockage of the extraction pipeline or the extraction equipment, hindering the normal passage of gas and affecting the gas extraction efficiency. Summary of the invention

[0004] The purpose of the embodiment of the present application is to provide a filtering device for gas extraction in coal mines, which can solve the technical problem that coal slag enters the inner wall of the gas extraction pipeline or gradually accumulates inside the extraction equipment, causing blockage, hindering the normal passage of gas, and reducing the gas extraction efficiency.

[0005] An embodiment of the present application provides a filtering device for extracting gas from underground coal mines, comprising a filter bin, an air inlet is provided on one side of the filter bin, an air outlet is provided on the top of the filter bin, a water inlet pipe is connected to one side of the filter bin, one end of the water inlet pipe extends into the filter bin and is connected to an atomizing nozzle, the atomizing nozzle is located above the air inlet, a filter assembly is provided in the filter bin, the filter assembly is located below the air inlet, a drain pipe is connected to the bottom of the filter bin, and a drain valve is provided on the drain pipe.

[0006] Furthermore, the filter assembly includes a filter screen and a coal ash collection trough, and the filter screen and the coal ash collection trough are both fixed in the filter bin, the filter screen is arranged at an angle, the upper end of the coal ash collection trough is connected to the lower end of the filter screen, and one side of the filter bin is provided with a cleaning port connected to the coal ash collection trough, and a sealing door is provided at the cleaning port.

[0007] Furthermore, water filtering holes are evenly arranged at the bottom of the coal slag collecting tank.

[0008] Furthermore, the sealing door is threadedly connected to the material cleaning port, and a sealing ring is embedded in the inner side of the sealing door, and the sealing ring is used to seal the gap between the sealing door and the material cleaning port.

[0009] Furthermore, a gas gathering hood is fixedly provided in the filter bin, a vent is provided on the top of the gas gathering hood, and the atomizing nozzle is located in the gas gathering hood and directly below the vent.

[0010] Furthermore, a hand wheel is fixedly provided on the outer side of the sealing door.

[0011] Furthermore, a transparent observation port is provided on one side of the filter chamber.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is used, the gas outlet is connected with the extraction equipment through the extraction pipe, and water mist is sprayed into the interior of the filter bin through the atomizing nozzle to contact the gas entering the filter bin. At this time, the coal slag in the gas increases its own weight after contacting the water mist, falls downward, and is separated from the gas. Finally, the gas enters the next step from the gas outlet, effectively preventing the coal slag in the gas from entering the extraction pipe or the extraction equipment and gradually accumulating to cause blockage, thereby ensuring the normal passage of the gas and ensuring the gas extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0016] Figure 2 It is a cross-sectional view of some embodiments of the present application;

[0017] Figure 3 This is a schematic diagram of the structure of the filter assembly in some embodiments of the present application;

[0018] The reference numerals are:

[0019] 1. Filter chamber; 2. Air inlet; 3. Air outlet; 4. Water inlet pipe; 5. Atomizing nozzle; 6. Filter assembly; 61. Filter screen; 62. Cinder collecting tank; 621. Water filter hole; 7. Drain pipe; 8. Drain valve; 9. Cleaning port; 10. Sealing door; 11. Sealing ring; 12. Gas hood; 121. Vent; 13. Hand wheel; 14. Observation port. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Specific embodiment:

[0027] like Figure 1-2As shown, the present application provides a filtering device for gas extraction in coal mines, including a filtering chamber 1, an air inlet 2 is provided on one side of the filtering chamber 1, an air outlet 3 is provided on the top of the filtering chamber 1, a water inlet pipe 4 is connected to one side of the filtering chamber 1, one end of the water inlet pipe 4 extends into the filtering chamber 1 and is connected to an atomizing nozzle 5, the atomizing nozzle 5 is located above the air inlet 2, a filtering assembly 6 is provided in the filtering chamber 1, the filtering assembly 6 is located below the air inlet 2, a drain pipe 7 is connected to the bottom of the filtering chamber 1, and a drain valve 8 is provided on the drain pipe 7. When in use, the air outlet 3 is connected to the extraction equipment through the extraction pipeline, and during the gas extraction process, the air inlet 3 is connected to the extraction equipment through the extraction pipeline, and the air inlet 3 is connected to the extraction equipment through the extraction pipeline. When the gas enters the filter bin 1 from the air inlet 2, it will come into contact with the water mist sprayed from the atomizing nozzle 5. The coal slag in the gas will increase in weight after meeting water, and thus fall into the filter assembly 6, and the gas passes through the water mist and enters the next step from the air outlet 3. The filter assembly 6 allows the coal slag to discharge excess water in a static state. The water passes through the filter assembly 6 and flows to the bottom of the filter bin 1 for temporary storage. The water can be discharged by regularly opening the drain valve 8 on the drain pipe 7. The device effectively prevents the coal slag in the gas from entering the extraction pipeline or the extraction equipment and gradually accumulating to cause blockage, thereby ensuring the normal passage of the gas and the gas extraction efficiency.

[0028] like Figure 2-3 As shown, the filter assembly 6 includes a filter screen 61 and a coal slag collecting trough 62, the filter screen 61 and the coal slag collecting trough 62 are both fixedly arranged in the filter bin 1, the filter screen 61 is arranged tilted, the upper end of the coal slag collecting trough 62 is connected to the lower end of the filter screen 61, and one side of the filter bin 1 is provided with a cleaning port 9 connected to the coal slag collecting trough 62, and a sealing door 10 is provided at the cleaning port 9. After the coal slag in the gas contacts with the water mist, the coal slag increases in its own gravity and falls into the filter screen 61 and the coal slag collecting trough 62, wherein the coal slag that falls on the filter screen 61 rolls along the tilted filter screen 61 into the coal slag collecting trough 62, and the coal slag collected in the coal slag collecting trough 62 can be discharged by regularly opening the sealing door 10 at the cleaning port 9.

[0029] like Figure 3 As shown, water filter holes 621 are evenly arranged at the bottom of the coal slag collecting tank 62. Water discharged from the coal slag in the coal slag collecting tank 62 in a static state flows downward through the water filter holes 621 to the bottom of the filter bin 1 for temporary storage, so that the coal slag is separated from the water.

[0030] like Figure 2 As shown, the sealing door 10 is threadedly connected to the cleaning port 9. Specifically, the outer side of the cleaning port 9 is provided with an external thread, and the inner side of the sealing door 10 is provided with an internal thread. The external thread and the internal thread are adapted to each other. A sealing ring 11 is embedded on the inner side of the sealing door 10. The sealing ring 11 is used to seal the gap between the sealing door 10 and the cleaning port 9 to prevent gas leakage.

[0031] like Figure 2As shown, a gas gathering hood 12 is fixedly provided in the filter bin 1, and a vent 121 is provided on the top of the gas gathering hood 12. The atomizing nozzle 5 is located in the gas gathering hood 12 and directly below the vent 121. Through the setting of the gas gathering hood 12, the contact effect between the coal slag in the gas and the water mist is improved, and the coal slag in the gas is effectively separated.

[0032] like Figure 1-2 As shown, a hand wheel 13 is fixedly provided on the outer side of the sealing door 10 to facilitate the rotation of the sealing door 10 .

[0033] like Figure 2 As shown, a transparent observation window 14 is provided on one side of the filter bin 1, through which the collection of coal slag in the coal slag collecting tank 62 can be observed, and the user can choose whether to open the sealing door 10 to clean the coal slag in the coal slag collecting tank 62 according to actual needs.

[0034] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filtering device for gas extraction in coal mines, characterized in that: It includes a filter bin, one side of the filter bin is provided with an air inlet, the top of the filter bin is provided with an air outlet, one side of the filter bin is connected to a water inlet pipe, one end of the water inlet pipe extends into the filter bin and is connected to an atomizing nozzle, the atomizing nozzle is located above the air inlet, a filter assembly is provided in the filter bin, the filter assembly is located below the air inlet, the bottom of the filter bin is connected to a drain pipe, and the drain pipe is provided with a drain valve.

2. A filtering device for gas extraction in underground coal mines according to claim 1, characterized in that: The filter assembly includes a filter screen and a coal slag collecting trough, both of which are fixed in the filter bin, the filter screen is tilted, the upper end of the coal slag collecting trough is connected to the lower end of the filter screen, and one side of the filter bin is provided with a cleaning port connected to the coal slag collecting trough, and a sealing door is provided at the cleaning port.

3. A filtering device for gas extraction in underground coal mines according to claim 2, characterized in that: The bottom of the coal slag collecting tank is evenly provided with water filtering holes.

4. A filtering device for gas extraction in underground coal mines according to claim 2, characterized in that: The sealing door is threadedly connected to the material clearing port, and a sealing ring is embedded in the inner side of the sealing door, and the sealing ring is used to seal the gap between the sealing door and the material clearing port.

5. The filtering device for gas extraction in underground coal mines according to claim 1, characterized in that: A gas gathering hood is fixedly arranged in the filter bin, a vent is arranged on the top of the gas gathering hood, and the atomizing nozzle is located in the gas gathering hood and directly below the vent.

6. A filtering device for gas extraction in underground coal mines according to claim 4, characterized in that: A hand wheel is fixedly arranged on the outer side of the sealing door.

7. The filtering device for gas extraction in underground coal mines according to claim 1, characterized in that: A transparent observation port is provided on one side of the filter chamber.

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