Novel mining gas extraction blowout preventer
By designing the airbag buffer and filter assembly of the mine gas extraction blowout prevention device, the adverse reactions caused by increased pressure during gas extraction were solved, achieving safe gas extraction and filtration, protecting the airbag, and preventing filter clogging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN DONGXINSHENG IND CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-12
AI Technical Summary
During gas extraction, the high underground gas content can easily lead to excessive venting, resulting in increased pressure inside the pipeline, adverse reactions, and reduced extraction efficiency.
A gas extraction and blowout prevention device for mines was designed, comprising an airbag buffer assembly and a filter assembly. The airbag expands to buffer when the pressure increases, the plug separates to release pressure, and the filter filters the gas to prevent coal debris from damaging the airbag.
It effectively alleviates the damage caused by increased pipeline pressure, achieves safe gas extraction and filtration, reduces pipeline damage, and avoids filter clogging.
Smart Images
Figure CN224228713U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of gas extraction technology, and in particular relates to a new type of gas extraction and blowout prevention device for mines. Background Technology
[0002] Gas extraction involves drilling to extract gas from coal seams and goafs to the surface, thereby reducing the underground gas concentration and enabling further utilization of the gas. Extracting gas from coal seams and goafs also reduces the amount of gas emitted, thus preventing explosions and outbursts and ensuring mine safety. Furthermore, gas can be used as a clean energy source.
[0003] During the gas extraction process, due to the high gas content underground, the gas flow rate can sometimes be too high, leading to increased pressure in the pipeline and a series of adverse reactions, which in turn affects the extraction process. To solve this problem, a new type of mine gas extraction and blowout prevention device is urgently needed. Utility Model Content
[0004] The purpose of this utility model is to solve the problem that during the gas extraction process, due to the high gas content underground, the gas discharge volume is sometimes too large, which leads to increased pressure in the pipeline and a series of adverse reactions, thus affecting the extraction. Therefore, a new type of gas extraction and blowout prevention device for mines is proposed.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a novel mine gas extraction and blowout prevention device, comprising a shell, an outlet pipe on one side of the shell, a buffer assembly inside the shell, and a filter assembly on the other side of the shell; the buffer assembly includes an air bladder, a fixing plate fixedly installed on the top surface of the air bladder, an exhaust pipe fixedly installed on the top surface of the fixing plate, a connecting rod slidably installed on the fixing plate through a through hole therein, a connecting ring fixedly installed at the top end of the connecting rod, an mounting plate fixedly installed at the bottom end of the connecting rod, a spring provided on the outer wall of the connecting rod, and a plug fixedly installed on the top surface of the mounting plate.
[0006] As a further description of the above technical solution:
[0007] The airbag is located inside the outer shell, one side of the airbag is fixedly connected to the air outlet pipe, and the fixing plate is slidably connected to the inner wall of the outer shell.
[0008] As a further description of the above technical solution:
[0009] The exhaust pipe is slidably connected to the outer casing through a through hole on the top surface of the outer casing, and the mounting plate and plug are both located inside the airbag.
[0010] As a further description of the above technical solution:
[0011] The plug is slidably connected to the inner wall of the exhaust pipe, the exhaust pipe is connected to the airbag, and the spring is located between the connecting ring and the fixing plate.
[0012] As a further description of the above technical solution:
[0013] The filter assembly includes a connecting sleeve, an air inlet pipe is fixedly installed at one end of the connecting sleeve, and a support frame is fixedly installed on the inner wall of the connecting sleeve.
[0014] As a further description of the above technical solution:
[0015] The support frame is rotatably mounted with a mounting rod through a through hole, and blades are fixedly mounted on the outer wall of the mounting rod.
[0016] As a further description of the above technical solution:
[0017] A scraper is fixedly installed at one end of the mounting rod, and a filter screen is fixedly installed on the inner wall of the connecting sleeve.
[0018] As a further description of the above technical solution:
[0019] The mounting rod is rotatably connected to the filter screen through a through hole, and the other end of the connecting sleeve is fixedly connected to the airbag. A collection box is provided at the bottom of the connecting sleeve.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0021] 1. In this utility model, an airbag is installed inside. During the gas extraction process, gas enters the airbag through the inlet pipe and enters the extraction device through the outlet pipe. If the pressure inside the pipeline increases, the airbag will expand. The expansion of the airbag can drive the fixed plate to move upward and can cause the plug to separate from the exhaust pipe, so that the gas can enter the collection device from the exhaust pipe and can be depressurized through the exhaust pipe. Through this design, if the pressure inside the pipeline increases during the gas extraction process, the airbag will expand due to the increased pressure, thereby buffering the sudden increase in pressure and reducing the damage to the pipeline caused by the sudden increase in pressure. As the airbag expands, the plug can be removed from the exhaust pipe, so that the gas can be discharged from the exhaust pipe, thereby depressurizing.
[0022] 2. In this utility model, by incorporating a filter screen, the gas can be filtered during the gas extraction process. As the gas flows through the inlet pipe and connecting sleeve, it drives the blades to rotate, which in turn drives the scraper to rotate via the mounting rod, thus cleaning the filter screen surface. This design achieves gas filtration during extraction, preventing coal dust in the gas from damaging the gas bag and protecting it. Furthermore, the gas flow drives the blades to rotate, which in turn drives the mounting rod and scraper to clean the filter screen surface, preventing clogging. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of a new type of mine gas extraction and blowout prevention device.
[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a new type of gas extraction and blowout prevention device for mines.
[0025] Figure 3 This is a schematic diagram of the explosive three-dimensional structure of the buffer component in a novel gas extraction and blowout prevention device for mines.
[0026] Figure 4 This is a three-dimensional exploded view of the filter component in a novel gas extraction and blowout prevention device for mines.
[0027] Legend:
[0028] 1. Exhaust pipe; 2. Outer shell; 3. Buffer assembly; 31. Exhaust pipe; 32. Connecting ring; 33. Plug; 34. Connecting rod; 35. Spring; 36. Mounting plate; 37. Fixing plate; 38. Airbag; 4. Filter assembly; 41. Filter screen; 42. Scraper; 43. Mounting rod; 44. Blade; 45. Support frame; 46. Connecting sleeve; 47. Collection box; 48. Intake pipe. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figures 1-4This utility model provides a technical solution: a novel mine gas extraction and blowout prevention device, including a shell 2, an outlet pipe 1 on one side of the shell 2, a buffer assembly 3 inside the shell 2, and a filter assembly 4 on the other side of the shell 2; the buffer assembly 3 includes an airbag 38, a fixing plate 37 is fixedly installed on the top surface of the airbag 38, an exhaust pipe 31 is fixedly installed on the top surface of the fixing plate 37, a connecting rod 34 is slidably installed on the fixing plate 37 through a through hole therein, a connecting ring 32 is fixedly installed on the top end of the connecting rod 34, an mounting plate 36 is fixedly installed on the bottom end of the connecting rod 34, a spring 35 is provided on the outer wall of the connecting rod 34, and a plug 33 is fixedly installed on the top surface of the mounting plate 36.
[0031] The airbag 38 is located inside the outer shell 2. One side of the airbag 38 is fixedly connected to the air outlet pipe 1. The fixing plate 37 is slidably connected to the inner wall of the outer shell 2. The exhaust pipe 31 is slidably connected to the outer shell 2 through a through hole on the top surface of the outer shell 2. The mounting plate 36 and the plug 33 are both located inside the airbag 38. The plug 33 is slidably connected to the inner wall of the exhaust pipe 31. The exhaust pipe 31 communicates with the airbag 38. The spring 35 is located between the connecting ring 32 and the fixing plate 37.
[0032] The specific implementation method is as follows: During the gas extraction process, the gas enters the airbag 38 through the air inlet pipe 48 and enters the extraction device through the air outlet pipe 1. If the pressure inside the pipeline increases due to the increased gas discharge volume, the airbag 38 will expand when the pressure increases, thereby providing a certain buffer. The expansion of the airbag 38 can drive the fixed plate 37 to move upward, so that the connecting ring 32 contacts the top of the inner shell 2. The blocking of the connecting ring 32 by the shell 2 causes the spring 35 to be compressed and causes the mounting plate 36 and the fixed plate 37 to be relatively displaced. The mounting plate 36 drives the plug 33 to separate from the exhaust pipe 31, so that the gas can enter the collection device from the exhaust pipe 31 and can be depressurized through the exhaust pipe 31.
[0033] The filter assembly 4 includes a connecting sleeve 46, an air inlet pipe 48 fixedly installed at one end of the connecting sleeve 46, a support frame 45 fixedly installed on the inner wall of the connecting sleeve 46, an mounting rod 43 rotatably installed on the support frame 45 through a through hole, a blade 44 fixedly installed on the outer wall of the mounting rod 43, a scraper 42 fixedly installed at one end of the mounting rod 43, a filter screen 41 fixedly installed on the inner wall of the connecting sleeve 46, and the mounting rod 43 rotatably connected to the filter screen 41 through a through hole, the other end of the connecting sleeve 46 fixedly connected to the airbag 38, and a collection box 47 provided at the bottom end of the connecting sleeve 46.
[0034] The specific implementation method is as follows: During the gas extraction process, the gas can be filtered through the filter screen 41 to prevent coal dust from entering the gas bag 38 and causing damage to the gas bag 38. As the gas flows in the inlet pipe 48 and the connecting sleeve 46, it can drive the blade 44 to rotate, thereby driving the scraper 42 to rotate through the mounting rod 43, thereby cleaning the surface of the filter screen 41 and causing the cleaned dust to slide into the collection box 47.
[0035] Working principle: During gas extraction, gas enters the gas bag 38 through the inlet pipe 48 and then enters the extraction device through the outlet pipe 1. If the gas discharge volume increases, causing an increase in pressure inside the pipeline, the gas bag 38 will expand to provide a certain buffer. The expansion of the gas bag 38 can also cause the fixed plate 37 to move upward, so that the connecting ring 32 contacts the top of the inner shell 2. The outer shell 2 blocks the connecting ring 32, causing the spring 35 to compress and the mounting plate 36 to move relative to the fixed plate 37. The mounting plate 36 then moves the plug 33 to the outlet. The gas pipe 31 is separated, allowing gas to enter the collection device from the exhaust pipe 31 and be depressurized through the exhaust pipe 31. During the gas extraction process, the gas can be filtered through the filter screen 41 to prevent coal dust from entering the gas bag 38 and causing damage. As the gas flows through the intake pipe 48 and the connecting sleeve 46, it can drive the blade 44 to rotate, which in turn drives the scraper 42 to rotate through the mounting rod 43, thereby cleaning the surface of the filter screen 41 and causing the cleaned debris to slide into the collection box 47.
[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A novel gas extraction and blowout prevention device for mines, comprising a shell (2), characterized in that: The outer shell (2) is provided with an air outlet pipe (1) on one side, a buffer assembly (3) is provided inside the outer shell (2), and a filter assembly (4) is provided on the other side of the outer shell (2); the buffer assembly (3) includes an airbag (38), a fixing plate (37) is fixedly installed on the top surface of the airbag (38), an exhaust pipe (31) is fixedly installed on the top surface of the fixing plate (37), a connecting rod (34) is slidably installed on the fixing plate (37) through a through hole, a connecting ring (32) is fixedly installed on the top end of the connecting rod (34), an mounting plate (36) is fixedly installed on the bottom end of the connecting rod (34), a spring (35) is provided on the outer wall of the connecting rod (34), and a plug (33) is fixedly installed on the top surface of the mounting plate (36).
2. The novel mine gas drainage and blowout prevention device according to claim 1, characterized in that, The airbag (38) is located inside the outer shell (2). One side of the airbag (38) is fixedly connected to the air outlet pipe (1), and the fixing plate (37) is slidably connected to the inner wall of the outer shell (2).
3. A novel mine gas drainage and blowout prevention device according to claim 2, characterized in that, The exhaust pipe (31) is slidably connected to the top surface of the outer casing (2) through a through hole, and the mounting plate (36) and the plug (33) are both located inside the airbag (38).
4. A novel mine gas drainage and blowout prevention device according to claim 3, characterized in that, The plug (33) is slidably connected to the inner wall of the exhaust pipe (31), the exhaust pipe (31) is connected to the airbag (38), and the spring (35) is located between the connecting ring (32) and the fixing plate (37).
5. A novel mine gas drainage and blowout prevention device according to claim 4, characterized in that, The filter assembly (4) includes a connecting sleeve (46), an air inlet pipe (48) is fixedly installed at one end of the connecting sleeve (46), and a support frame (45) is fixedly installed on the inner wall of the connecting sleeve (46).
6. A novel mine gas drainage and blowout prevention device according to claim 5, characterized in that, The support frame (45) is rotatably mounted with a mounting rod (43) through a through hole therein, and a blade (44) is fixedly mounted on the outer wall of the mounting rod (43).
7. A novel mine gas drainage and blowout prevention device according to claim 6, characterized in that, A scraper (42) is fixedly installed at one end of the mounting rod (43), and a filter screen (41) is fixedly installed on the inner wall of the connecting sleeve (46).
8. A novel mine gas drainage and blowout prevention device according to claim 7, characterized in that, The mounting rod (43) is rotatably connected to the filter screen (41) through the through hole. The other end of the connecting sleeve (46) is fixedly connected to the airbag (38). The bottom end of the connecting sleeve (46) is provided with a collection box (47).