Continuous nitrogen injection device and method for oxidation zone of goaf of Y-shaped ventilation working face

Abstract

The invention relates to the field of coal mining, in particular to a Y-shaped ventilation working face goaf oxidation zone continuous nitrogen injection device and method.The Y-shaped ventilation working face goaf oxidation zone continuous nitrogen injection device comprises a bearing frame, one side and the top of the bearing frame are open, walking wheels are symmetrically arranged on the side portions of the bearing frame, and an adjusting assembly is slidably installed in the middle of the inner side wall of the bearing frame; a cleaning assembly is arranged on the side portion of the adjusting assembly, a driving assembly is arranged on the side portion of the cleaning assembly, and the problems that in the traditional mode of injecting nitrogen into the goaf oxidation zone, cost is high, the pore-forming rate is low, blockage is prone to occurring, and it cannot be guaranteed that nitrogen release is always in the goaf oxidation zone are solved.

Description

Technical Field

[0001] This invention relates to the field of coal mining, specifically to a device and method for continuous nitrogen injection into the oxidation zone of a Y-type ventilation working face goaf. Background Technology

[0002] During coal mining, there is a risk of spontaneous combustion in goaf areas, especially in the oxidation zone. Because coal comes into full contact with oxygen, an oxidation reaction occurs, generating heat. If this heat accumulates and cannot dissipate in time, it can lead to spontaneous combustion, posing a serious threat to safe coal mining operations. Nitrogen injection is an effective measure to prevent spontaneous combustion in goaf areas. By injecting nitrogen into the oxidation zone, the oxygen concentration is reduced, inhibiting the coal oxidation reaction and thus achieving fire prevention.

[0003] Currently, there are three main methods for injecting nitrogen into the oxidation zone of goaf areas: borehole nitrogen injection, tube-type nitrogen injection, and ordinary buried pipe nitrogen injection. Among them, borehole nitrogen injection requires a large number of drilling operations, and the boreholes are prone to collapse during construction in goaf areas, leading to situations such as stuck drills, buried drills, and inability to install casings as designed. It is costly and has a low hole formation rate. Tube-type nitrogen injection requires specially made tubes, which have high requirements. If the tubes are damaged or blocked during forward movement, it is not easy to detect, and it cannot guarantee continuous nitrogen injection into the oxidation zone of the goaf area or that the released nitrogen is always in the oxidation zone of the goaf area. Ordinary buried pipe nitrogen injection cannot guarantee that the released nitrogen is always in the oxidation zone of the goaf area.

[0004] Therefore, a device and method for continuous nitrogen injection into the oxidation zone of a Y-type ventilation working face goaf is provided to address the above problems. Summary of the Invention

[0005] This invention aims to solve the problems of high cost, low porosity, easy clogging, and inability to ensure that nitrogen release is always in the oxidation zone of the goaf in traditional nitrogen injection methods. It provides a device and method for continuous nitrogen injection into the oxidation zone of the goaf in a Y-type ventilation working face.

[0006] This invention solves the above-mentioned technical problems through the following technical solution: a method for continuous nitrogen injection into the oxidation zone of a Y-type ventilation working face goaf, the method comprising the following steps: S1: Based on the existing nitrogen production equipment and nitrogen transmission pipeline network in the mine, nitrogen transmission pipelines are laid through the conveyor belt roadway of the coal mining face to bring nitrogen to the vicinity of the coal mining face; by investigating and determining the distribution of the "three zones" in the goaf of the coal mining face, the distance between the oxidation zone and the coal mining face is determined, and based on this distance, 2 to 3 nitrogen transmission pipelines are pre-buried in the conveyor belt roadway of the coal mining face, namely pre-buried pipe one, pre-buried pipe two, and pre-buried pipe three. The nitrogen outlet of pre-buried pipe two is located in the middle area of ​​pre-buried pipe one, and the nitrogen outlet of pre-buried pipe three is located in the middle area of ​​pre-buried pipe two.

[0007] S2: During coal mining, first connect the pre-embedded pipe 1 and the nitrogen injection pipe, start the terminal nitrogen generation equipment, and release nitrogen gas into the oxidation zone of the goaf through the nitrogen injection pipe and the pre-embedded pipe 1; S3: When the working face is back to the connection between the pre-embedded pipe 1 and the nitrogen injection pipe, disconnect the pre-embedded pipe 1 and the nitrogen injection pipe, pull the nitrogen injection pipe back to the end of the pre-embedded pipe 2, and then connect the pre-embedded pipe 2 and the nitrogen injection pipe to carry out nitrogen release operation in the oxidation zone of the goaf again. S4: Repeat the above operation to continuously release nitrogen into the oxidation zone of the goaf.

[0008] Furthermore, the present invention relates to a continuous nitrogen injection device for the oxidation zone of a Y-type ventilation working face goaf, comprising a support frame, one side and the top of the support frame being open, and symmetrically arranged walking wheels on the side of the support frame. An adjustment component is slidably installed in the middle of the inner sidewall of the support frame, a cleaning component is arranged on the side of the adjustment component, and a drive component is arranged on the side of the cleaning component.

[0009] Furthermore, the support frame is symmetrically equipped with handrails on its sidewalls, and a first nitrogen injection pipe groove is opened on the sidewall of the support frame away from the opening end. A limit sliding groove is symmetrically opened in the middle of the inner sidewall of the support frame.

[0010] Furthermore, the adjustment assembly includes an adjustment plate slidably installed in the limiting groove, a second nitrogen injection groove is provided on the adjustment plate corresponding to the position of the first nitrogen injection groove, an electric push rod is fixedly installed on the side wall of the second nitrogen injection groove, and a limiting block is fixedly installed on the telescopic end of the electric push rod.

[0011] Furthermore, the cleaning component includes a positioning plate fixedly installed on the inner side wall of the support frame. A through groove is provided on the positioning plate at the position corresponding to the second nitrogen injection pipe groove. An air blowing unit is symmetrically arranged on the side wall of the positioning plate at the position of the through groove.

[0012] Furthermore, an air cavity is provided inside the positioning plate and located outside the through groove, and vent holes are symmetrically provided on the upper and lower sides of the through groove, with the vent holes and the air cavity being connected.

[0013] Furthermore, the air-blowing unit includes a positioning bracket fixedly installed on the side wall of the positioning plate, a cylindrical air cylinder fixedly installed on the positioning bracket, a ball-head piston rod slidably installed inside the cylindrical air cylinder through a compression spring, and the air outlet of the cylindrical air cylinder is connected to the inside of the air chamber through an air guide pipe.

[0014] Furthermore, the drive assembly includes a drive motor fixedly installed on the inner side wall of the support frame. The output shaft of the drive motor is fixedly mounted with a drive gear. A rack meshes with the lower end of the drive gear. One end of the rack is fixedly connected to the adjustment plate, and the other end passes through the positioning plate and extends to the outside of the support frame.

[0015] Furthermore, a drive shaft is fixedly mounted on the side wall of the drive gear, and a disc-shaped cam is fixedly mounted on the end of the drive shaft. The outer wall of the disc-shaped cam and the end of the ball-head piston rod are in sliding fit.

[0016] Furthermore, a nitrogen injection pipe is inserted into the second nitrogen injection pipe groove, and a limiting plate is fixedly installed on the nitrogen injection pipe at a position on both sides of the second nitrogen injection pipe groove. The inlet end of the nitrogen injection pipe passes through the limiting block, the through groove and the first nitrogen injection pipe groove in sequence and is connected to the terminal nitrogen generation equipment.

[0017] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0018] The positive and progressive effects of this invention are as follows: 1. By pre-burying multiple nitrogen delivery pipelines and adjusting and switching functions of the device, nitrogen can be continuously injected into the oxidation zone of the goaf as the working face advances, effectively inhibiting coal oxidation and spontaneous combustion, improving fire prevention effect. The adjustment component can move automatically under the action of the drive component, driving the nitrogen injection pipe to advance or retreat with the working face, eliminating the need for frequent manual adjustment of the nitrogen injection position, reducing labor intensity and improving work efficiency. 2. The cleaning components are designed to clean the surface of the nitrogen injection pipe during the nitrogen injection process, ensuring the cleanliness of the nitrogen injection pipe surface and extending its service life. In addition, the various components of the device are reasonably designed, and the automatic operation of the device is achieved through the cooperation of mechanical structures such as gears, racks, and cams. The device is also compact in structure, making it easy to move and install in underground coal mines. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the three-dimensional structure after removing the top cover.

[0021] Figure 3 In this invention Figure 2 A schematic diagram of the three-dimensional structure after removing the load-bearing frame and the wheels.

[0022] Figure 4 In this invention Figure 3 A magnified structural diagram at point A.

[0023] Figure 5 This is a three-dimensional structural diagram of the cleaning component in this invention.

[0024] Figure 6 This is a cross-sectional three-dimensional structural diagram of the positioning plate in this invention.

[0025] Figure 7This is a schematic diagram of the nitrogen injection process in this invention.

[0026] Explanation of reference numerals in the attached figures 1. Support frame; 11. Handrail; 12. First nitrogen injection tank; 13. Limiting slide groove; 2. Wheels; 3. Adjustment assembly; 31. Adjustment plate; 32. Second nitrogen injection tank; 33. Electric push rod; 34. Limit block; 4. Cleaning components; 41. Positioning plate; 42. Through slot; 421. Air chamber; 422. Vent hole; 43. Blowing unit; 431. Positioning bracket; 432. Cylindrical air cylinder; 433. Compression spring; 434. Ball-head piston rod; 435. Air guide tube; 5. Drive assembly; 51. Drive motor; 52. Drive gear; 53. Rack; 54. Drive shaft; 55. Disc cam; 6. Nitrogen injection pipe; 7. Limiting plate; 100. Goaf of coal mining face; 200. Return airway of coal mining face; 300. Belt conveyor roadway of coal mining face; 400. Track roadway of coal mining face; 500. Coal mining face; 600. Nitrogen generator; 700. Embedded pipe one; 800. Embedded pipe two; 900. Embedded pipe three; X. Asphyxiation zone; Y. Oxidation zone; Z. Heat dissipation zone. Detailed Implementation

[0027] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0028] Example: See Figure 7 In the goaf of the Y-shaped ventilation working face, nitrogen is continuously injected into the oxidation zone. The Y-shaped ventilation refers to the intake of air from the conveyor belt roadway 300 and the track roadway 400 of the coal mining face, which converge at the coal mining face 500, and then return air through the return air roadway 200 of the coal mining face. The conveyor belt roadway 300, the track roadway 400, the coal mining face 500, and the return air roadway 200 of the coal mining face together constitute the Y-shaped ventilation working face.

[0029] See Figures 1 to 6 A continuous nitrogen injection device for the oxidation zone of a Y-shaped ventilation working face goaf includes a support frame 1, one side and the top of the support frame 1 are open, and walking wheels 2 are symmetrically arranged on the side of the support frame 1. The device is characterized in that: an adjustment component 3 is slidably installed in the middle of the inner side wall of the support frame 1, a cleaning component 4 is arranged on the side of the adjustment component 3, and a drive component 5 is arranged on the side of the cleaning component 4.

[0030] The support frame 1 is symmetrically equipped with handrails 11 on its side wall. The side wall of the support frame 1 away from the opening end is provided with a first nitrogen injection pipe groove 12. The inner side wall of the support frame 1 is symmetrically provided with a limiting slide groove 13. The handrails 11 facilitate manual movement of the continuous nitrogen injection device in the oxidation zone of the goaf of the Y-shaped ventilation working face. The first nitrogen injection pipe groove 12 provides installation space for the nitrogen injection pipe 6. The limiting slide groove 13 provides installation position for the adjustment component 3.

[0031] The adjustment assembly 3 includes an adjustment plate 31 slidably installed in the limiting groove 13. A second nitrogen injection pipe groove 32 is opened on the adjustment plate 31 at the position corresponding to the first nitrogen injection pipe groove 12. An electric push rod 33 is fixedly installed on the side wall of the second nitrogen injection pipe groove 32. A limiting block 34 is fixedly installed on the telescopic end of the electric push rod 33. During the process of connecting the second nitrogen supply line and the nitrogen injection pipe 6, the limiting block 34 can be moved by the electric push rod 33 to adjust the horizontal position of the nitrogen injection pipe 6, so as to facilitate the quick installation of the second nitrogen supply line and the nitrogen injection pipe 6.

[0032] The cleaning component 4 includes a positioning plate 41 fixedly installed on the inner side wall of the support frame 1. A through groove 42 is provided on the positioning plate 41 at the position corresponding to the second nitrogen injection tube groove 32. An air blowing unit 43 is symmetrically arranged on the side wall of the positioning plate 41 at the position of the through groove 42.

[0033] An air cavity 421 is provided inside the positioning plate 41 and located outside the through groove 42. Ventilation holes 422 are symmetrically provided on the upper and lower sides of the through groove 42. The ventilation holes 422 and the air cavity 421 are connected.

[0034] The air-blowing unit 43 includes a positioning bracket 431 fixedly installed on the side wall of the positioning plate 41. A cylindrical air cylinder 432 is fixedly installed on the positioning bracket 431. A ball-head piston rod 434 is slidably installed inside the cylindrical air cylinder 432 through a compression spring 433. The air outlet of the cylindrical air cylinder 432 is connected to the inside of the air chamber 421 through an air guide pipe 435.

[0035] During the process of the driving component 5 moving the nitrogen injection tube 6 left and right, the nitrogen injection tube 6 will move left and right in the through groove 42. The driving component 5 drives the air blowing unit 43 to continuously inflate the air chamber 421, and then blows the air onto the surface of the nitrogen injection tube 6 through the air vent 422, thereby ensuring the cleanliness of the outer surface of the nitrogen injection tube 6 and extending its service life.

[0036] The drive assembly 5 includes a drive motor 51 fixedly installed on the inner side wall of the support frame 1. The output shaft of the drive motor 51 is fixedly installed with a drive gear 52. The lower end of the drive gear 52 is meshed with a rack 53. One end of the rack 53 is fixedly connected to the adjustment plate 31, and the other end passes through the positioning plate 41 and extends to the outside of the support frame 1.

[0037] The drive gear 52 has a drive shaft 54 ​​fixedly installed on its side wall, and a disc cam 55 is fixedly installed on the end of the drive shaft 54. The outer wall of the disc cam 55 and the end of the ball piston rod 434 are in sliding fit.

[0038] A nitrogen injection pipe 6 is inserted into the second nitrogen injection pipe groove 32. A limiting plate 7 is fixedly installed on the nitrogen injection pipe 6 at the position on both sides of the second nitrogen injection pipe groove 32. The inlet end of the nitrogen injection pipe 6 passes through the limiting block 34, the through groove 42 and the first nitrogen injection pipe groove 12 in sequence and is connected to the terminal nitrogen generation equipment.

[0039] The rack 53 and the positioning plate 41 are in a sliding fit, and the rack 53 and the side wall of the bearing frame 1 are also in a sliding fit.

[0040] During nitrogen injection, the drive motor 51 is started, which drives the drive gear 52 to rotate. The drive gear 52 drives the rack 53 to move, thereby moving the adjustment component 3 and the nitrogen injection pipe 6 to complete the nitrogen injection process. During the replacement of nitrogen supply line one and nitrogen supply line two, the drive motor 51 drives the drive gear 52 to rotate. The drive gear 52 drives the rack 53 and the adjustment component 3 to move, which facilitates the retraction of the end of the nitrogen injection pipe 6, reduces manual labor, and realizes a quick transfer process between nitrogen supply line one and nitrogen supply line two. During the rotation of the drive gear 52, the drive gear 52 also drives the transmission shaft 54 ​​and the disc cam 55 to rotate. The continuous inflation of the gas chamber 421 is achieved by the compression between the disc cam 55 and the ball piston rod 434.

[0041] Furthermore, the present invention also provides a method for continuously injecting nitrogen into the oxidation zone of the goaf using the continuous nitrogen injection device in the Y-type ventilation working face, specifically including the following steps: S1: First, move the above-mentioned device to the conveyor belt roadway of the coal mining face, then connect the inlet end of the nitrogen injection pipe 6 to the terminal nitrogen generator. By investigation, determine the distribution of the "three belts" in the goaf, clarify the distance between the oxidation zone and the working face, and based on this distance, pre-bury nitrogen pipeline 1 and nitrogen pipeline 2 in the conveyor belt roadway of the coal mining face. The nitrogen outlet port of nitrogen pipeline 2 is located in the middle area of ​​nitrogen pipeline 1. S2: During coal mining, first connect nitrogen supply pipeline 1 and nitrogen injection pipeline 6, start the terminal nitrogen generation equipment and release nitrogen gas into the oxidation zone of the goaf through nitrogen injection pipeline 6 and nitrogen supply pipeline 1, start drive motor 51, drive drive gear 52 to rotate through drive motor 51, drive rack 53 to move through drive gear 52, thereby driving adjustment component 3 and nitrogen injection pipeline 6 to advance with the working face and complete nitrogen injection operation; During the advancement process, the nitrogen injection tube 6 will move within the through groove 42. During the rotation of the drive gear 52, the drive gear 52 will also drive the transmission shaft 54 ​​and the disc cam 55 to rotate. Through the compression between the disc cam 55 and the ball piston rod 434, the gas is continuously injected into the gas chamber 421. The gas inside the gas chamber 421 will be blown onto the surface of the nitrogen injection tube 6 through the vent 422, thereby ensuring the cleanliness of the outer surface of the nitrogen injection tube 6 and extending its service life. S3: When the adjusting component 3 extends to the maximum distance, and the working face is back mined to the connection between the pre-buried nitrogen delivery pipeline 1 and the nitrogen injection pipe 6, disconnect the nitrogen delivery pipeline 1 and the nitrogen injection pipe 6. Drive the adjusting component 3 and the nitrogen injection pipe 6 to the end of the nitrogen delivery pipeline 2 through the driving component 5. Then connect the nitrogen delivery pipeline 2 and the nitrogen injection pipe 6 to carry out nitrogen release operation in the oxidation zone of the goaf again. During the process of connecting the nitrogen delivery pipeline 2 and the nitrogen injection pipe 6, the limit block 34 can be moved by the electric push rod 33 to adjust the horizontal position of the nitrogen injection pipe 6, so as to facilitate the rapid installation of the nitrogen delivery pipeline 2 and the nitrogen injection pipe 6. S4: Repeat the above operation to continuously release nitrogen into the oxidation zone of the goaf.

[0042] It should be noted that, for ease of understanding of the nitrogen injection method in this application, the following is specifically addressed. Figure 7 Further explanation: (1) See Figure 7 In (a), based on the nitrogen production equipment 600 and nitrogen transmission pipeline network in the mine, a nitrogen transmission pipeline is laid through the conveyor belt roadway 300 of the coal mining face to bring nitrogen to the vicinity of the coal mining face 500. (2) See Figure 7 In (b), the distribution of the "three zones" in the goaf of the coal mining face 100 was determined by investigation, and the distance between the oxidation zone Y and the coal mining face 500 was clarified. Based on this distance, 2 to 3 nitrogen conveying pipelines were pre-buried in the conveyor belt roadway 300 of the coal mining face, namely, pre-buried pipe one 700, pre-buried pipe two 800 and pre-buried pipe three 900.

[0043] For example: In a certain working face, the edge of the oxidation zone Y in the goaf 100 is about 25 meters away from the working face 500. It is possible to arrange one nitrogen release port every 30 meters in the goaf 100 of the working face. In the conveyor belt roadway 300 of the working face, 2 to 3 nitrogen pipelines with a length of 60 meters are pre-buried. The outlet of the pre-buried pipeline 800 is located in the middle of the pre-buried pipeline 700. A nitrogen release port is pre-set. Protective measures are taken to reduce the damage to the pre-buried nitrogen pipeline caused by roof pressure and goaf collapse. The pre-buried nitrogen pipeline is connected to the mine nitrogen supply network and releases nitrogen into the oxidation zone Y of the goaf 100 of the working face through the reserved release port. The mine nitrogen pipeline is always connected to the pre-buried nitrogen pipeline (pre-buried pipe 1 700) in the goaf area 100 near the coal mining face. As the coal mining face 500 advances, when the coal mining face 500 is backed to the connection point between pre-buried pipe 1 700 and the mine nitrogen pipeline, the working nitrogen release port is about 55 meters away from the working face. The nitrogen pipeline is pulled back 30 meters and connected to pre-buried pipe 2 800. At the same time, pre-buried pipe 3 900 is laid, and the working nitrogen release port is adjusted from 55 meters to 25 meters. The working nitrogen release port is always located 25 to 55 meters behind the coal mining face 500, and the released nitrogen is always in the oxidation zone Y of the goaf area 100 of the coal mining face.

[0044] (3) See Figure 7 In (C), when the changes in the "three zones" of the goaf 100 of the coal mining face are observed, the length of the pre-buried pipe is adjusted according to the investigation results to ensure that the nitrogen release port is located in the oxidation zone Y of the goaf 100 of the coal mining face.

[0045] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A method for continuous nitrogen injection in the oxidized zone of a gob in a Y-type ventilation face, characterized in that, The method for continuously injecting nitrogen into the goaf oxidation zone comprises the following steps: S1: Based on the mine-used nitrogen production equipment (600) and the nitrogen pipeline network, nitrogen pipelines are laid through the belt roadway (300) of the coal mining face to introduce nitrogen near the coal mining face (500); the distribution of the "three zones" of the goaf of the coal mining face is determined by investigation, the distance between the oxidation zone (Y) and the coal mining face (500) is determined, and 2-3 nitrogen pipelines are pre-buried in the coal mining face belt roadway (300) in advance according to the distance, which are pre-buried pipe one (700), pre-buried pipe two (800) and pre-buried pipe three (900), wherein the nitrogen outlet port of the pre-buried pipe two (800) is located in the middle region of the pre-buried pipe one (700), and the nitrogen outlet port of the pre-buried pipe three (900) is located in the middle region of the pre-buried pipe two (800). S2: When the coal is mined, the pre-buried pipe one (700) is connected with the nitrogen injection pipe (6), the terminal nitrogen production equipment is started, and nitrogen is released into the goaf oxidation zone through the nitrogen injection pipe (6) and the pre-buried pipe one (700); S3: When the coal mining face is mined to the connection position of the pre-buried pipe one (700) and the nitrogen injection pipe (6), the pre-buried pipe one (700) is disconnected from the nitrogen injection pipe (6), the nitrogen injection pipe (6) is withdrawn to the end of the pre-buried pipe two (800), the pre-buried pipe two (800) is connected with the nitrogen injection pipe (6), and the nitrogen release operation in the goaf oxidation zone is performed again; S4: The above operation is repeated, so that nitrogen is released into the goaf oxidation zone at all times.

2. The goaf oxidation zone continuous nitrogen injection device of the Y-type ventilation working face goaf oxidation zone continuous nitrogen injection method according to claim 1, comprising a bearing frame (1), one side and the top of the bearing frame (1) are open, walking wheels (2) are symmetrically arranged on the side of the bearing frame (1), characterized in that: The adjusting assembly (3) is slidably installed in the middle of the inner side wall of the bearing frame (1), the cleaning assembly (4) is arranged on the side of the adjusting assembly (3), and the driving assembly (5) is arranged on the side of the cleaning assembly (4).

3. The gob oxidation zone continuous nitrogen injection apparatus of claim 2, wherein: The side wall of the bearing frame (1) is symmetrically provided with a handrail (11), the side wall of the bearing frame (1) away from the outlet end is provided with a first nitrogen injection pipe groove (12), and the middle of the inner side wall of the bearing frame (1) is symmetrically provided with a limiting sliding groove (13).

4. The gob oxidation zone continuous nitrogen injection apparatus of claim 3, wherein: The adjusting assembly (3) comprises an adjusting plate (31) slidably installed in the limiting sliding groove (13), a second nitrogen injection pipe groove (32) is formed in the adjusting plate (31) corresponding to the position of the first nitrogen injection pipe groove (12), an electric push rod (33) is fixedly installed on the side wall of the second nitrogen injection pipe groove (32), and a limiting block (34) is fixedly installed on the extension end of the electric push rod (33).

5. The gob oxidation zone continuous nitrogen injection apparatus of claim 4, wherein: The cleaning assembly (4) comprises a positioning plate (41) fixedly installed on the inner side wall of the bearing frame (1), a through groove (42) is formed in the positioning plate (41) corresponding to the position of the second nitrogen injection pipe groove (32), and air blowing units (43) are symmetrically arranged on the side wall of the positioning plate (41) and located at the position of the through groove (42).

6. The gob oxidation zone continuous nitrogen injection apparatus of claim 5, wherein: The positioning plate (41) is internally provided with an air cavity (421) at the position outside the through groove (42), and air holes (422) are symmetrically formed in the upper and lower sides of the through groove (42), and the air holes (422) and the air cavity (421) are in communication.

7. The gob oxidation zone continuous nitrogen injection apparatus of claim 6, wherein: The air blowing unit (43) comprises a positioning support (431) fixedly installed on the side wall of the positioning plate (41), a cylindrical air cylinder (432) is fixedly installed on the positioning support (431), a ball head piston rod (434) is slidably installed in the cylindrical air cylinder (432) through a compression spring (433), and the air outlet of the cylindrical air cylinder (432) is communicated with the air cavity (421) through a gas guide pipe (435).

8. The gob oxidation zone continuous nitrogen injection apparatus of claim 7, wherein: The driving assembly (5) comprises a driving motor (51) fixedly installed on the inner side wall of the bearing frame (1), a driving gear (52) fixedly installed on the output shaft of the driving motor (51), a rack (53) engaged with the lower end of the driving gear (52), and the rack (53) fixedly connected with one end of the adjusting plate (31) and extending through the positioning plate (41) to the outside of the bearing frame (1).

9. The gob oxidation zone continuous nitrogen injection apparatus of claim 8, wherein: The driving gear (52) is fixedly installed on the side wall of the driving gear (52), a driving shaft (54) is fixedly installed on the side wall of the driving gear (52), a disc-shaped cam (55) is fixedly installed on the end of the driving shaft (54), and the outer wall of the disc-shaped cam (55) is in sliding fit with the end of the ball head piston rod (434).

10. The gob oxidation zone continuous nitrogen injection apparatus of claim 6, wherein: The second nitrogen injection pipe groove (32) is provided with a nitrogen injection pipe (6) penetrating therethrough, the nitrogen injection pipe (6) is fixedly installed with a limiting plate (7) on the both sides of the second nitrogen injection pipe groove (32), and the inlet end of the nitrogen injection pipe (6) penetrates through the limiting block (34), the penetrating groove (42) and the first nitrogen injection pipe groove (12) in sequence and is connected with the terminal nitrogen production equipment.

Images