Blowout hole prevention device in underground drilling process of coal mine

Abstract

The invention discloses a coal mine underground drilling process blowout preventer, which comprises a blowout preventer and a filter assembly, and the filter assembly is arranged in a negative pressure air suction pipeline; the dredging assembly is arranged in the negative-pressure gas suction pipeline, the flow dividing assembly is arranged in the gas flow dividing pipeline, coal briquettes entering the negative-pressure gas suction pipeline are filtered by arranging the filtering assembly, and when a filtering plate is blocked, the dredging assembly is arranged in the negative-pressure gas suction pipeline; the dredging assembly can drive a filter plate and a stirring plate to rotate to stir coal briquettes blocked in front of the filter plate after receiving a signal of the triggering assembly, meanwhile, the flow dividing assembly is opened, the stirred coal briquettes can be brought into a gas flow dividing pipeline through high-pressure gas, then the filter plate is dredged, and the situation that the coal briquettes are blocked after the filter plate is blocked is prevented. Under the pressure action of coal briquettes and gas, the connecting position of a pipeline falls off, a large amount of coal and gas enter a roadway, and gas overrun and casualties are caused.

Description

Technical Field

[0001] The invention relates to the field of coal mining equipment, in particular to a blowout prevention device during underground drilling in a coal mine. Background Art

[0002] Coal mine blowout prevention equipment is mainly used to reduce or prevent blowout phenomena during coal mining, as well as to control dust pollution and gas emissions.

[0003] When a blowout occurs in the existing coal mine blowout prevention equipment, a large amount of gas and coal will be ejected, which can easily cause the negative pressure suction pipeline of the coal mine blowout prevention equipment to be blocked. Under the action of the coal and gas pressure, the pipeline connection is easy to fall off. After falling off, a large amount of coal and gas enter the tunnel, causing gas exceeding the limit and casualties. Therefore, it is necessary to develop a blowout prevention device for the underground drilling process in coal mines. Summary of the invention

[0004] In order to solve the above shortcomings and deficiencies of the prior art, the purpose of the present invention is to provide a blowout prevention device during the drilling process in an underground coal mine.

[0005] The technical solution of the present invention is: a blowout prevention device for the drilling process in underground coal mines, comprising a blowout prevention device, A negative pressure air suction pipeline, wherein the negative pressure air suction pipeline is arranged on the blowout preventer; Also included are: A gas shunt pipe, wherein the gas shunt pipe is arranged on the negative pressure air intake pipe; A filter assembly, wherein the filter assembly is arranged in the negative pressure air intake duct; A dredging component, which is arranged in the negative pressure air intake duct and connected to the filter component; The diversion component is arranged in the gas diversion pipeline and is connected with the dredging component.

[0006] Furthermore, the filter assembly includes two fixing rings arranged in the negative pressure suction duct, a filter plate is arranged between the two fixing rings, and a trigger assembly is arranged on the filter plate.

[0007] Furthermore, the trigger assembly includes a rotating shaft three arranged on the filter plate, a fan blade is arranged on the rotating shaft three, a shell is arranged on the rotating shaft three, a spring is arranged in the shell, a fixing block is arranged at one end of the spring away from the shell, and a pressure sensor is arranged on the side of the shell away from the spring.

[0008] Furthermore, the dredging component includes a driving member and a transmission member, the driving member includes a fixed seat arranged on the negative pressure suction pipe, a servo motor is arranged on the fixed seat, a rotating shaft 1 is arranged at the output end of the servo motor, a bevel gear 1 is arranged at the end of the rotating shaft 1 away from the servo motor, and the pressure sensor is electrically connected to the servo motor.

[0009] Furthermore, the transmission member includes a bevel gear 2 arranged on one side of the bevel gear 1, the bevel gear 2 is meshed with the bevel gear 1, a rotating shaft 2 is arranged at the end of the bevel gear 2 away from the bevel gear 1, a connecting frame is arranged on the rotating shaft 2, a fixing rod is arranged at the end of the rotating shaft 2 away from the bevel gear 2, a guide rail is arranged on the side of the filter plate close to the fixing rod, and a stirring plate is arranged on the side of the filter plate away from the fixing rod.

[0010] Furthermore, the diversion assembly includes a fixed plate arranged in the gas diversion pipeline, a baffle is arranged on the fixed plate, a plurality of guide rods are arranged on the baffle, the ends of the plurality of guide rods away from the baffle all pass through the fixed plate, a guide rod is arranged on the side of the baffle away from the plurality of guide rods, a guide block is arranged on the side of the guide rod, a screw is arranged on the guide block, the end of the screw rod away from the guide block passes through the gas diversion pipeline, a pulley 1 is arranged on the end of the screw rod away from the guide block, a pulley 2 is arranged on the rotating shaft 1, and a belt is arranged between the pulley 2 and the pulley 1.

[0011] The beneficial effect of the present invention is as follows: by setting a filter component to filter the coal blocks entering the negative pressure suction pipe, when the filter plate is blocked, the unblocking component will drive the filter plate and the stirring plate to rotate after receiving the signal of the trigger component to stir the coal blocks blocked in front of the filter plate, and at the same time the diversion component will be opened, and the high-pressure gas will bring the stirred coal blocks into the gas diversion pipe, thereby unblocking the filter plate, preventing the pipeline connection from falling off under the action of the coal blocks and gas pressure after the filter plate is blocked, resulting in a large amount of coal and gas entering the tunnel, causing gas exceeding the limit and casualties. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement in the middle; Figure 3 This is a schematic cross-sectional view of the gas collection pipeline structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 5 This is a schematic diagram of the explosion of the trigger assembly structure of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at C in the middle; Figure 7 It is a schematic diagram of the structure of the diversion component of the present invention.

[0013] Description of the numbers in the figure: 1. Anti-blowout hole device; 2. Negative pressure suction pipe; 3. Gas diversion pipe; 4. Driving part; 41. Fixed seat; 42. Servo motor; 43. Rotating shaft one; 44. Bevel gear one; 5. Filter assembly; 51. Fixed ring; 52. Filter plate; 6. Transmission part; 61. Bevel gear two; 62. Rotating shaft two; 63. Fixed rod; 64. Guide rail; 65. Stirring plate; 66. Connecting frame; 7. Clearing assembly; 8. Trigger assembly; 81. Rotating shaft three; 82. Fan blade; 83. Housing; 84. Spring; 85. Pressure sensor; 86. Fixed block; 9. Diversion assembly; 91. Fixed plate; 92. Guide rod; 93. Baffle; 94. Guide rod; 95. Guide block; 96. Screw; 97. Pulley one; 98. Belt; 99. Pulley two. DETAILED DESCRIPTION

[0014] The invention is further described below in conjunction with the accompanying drawings and specific embodiments: refer to Figures 1 to 7 A blowout prevention device for drilling in underground coal mines, comprising a blowout prevention device 1, A negative pressure air suction pipe 2, wherein the negative pressure air suction pipe 2 is arranged on the blowout preventer 1; Also included are: A gas diversion pipeline 3, the gas diversion pipeline 3 is arranged on the negative pressure air suction pipeline 2; A filter assembly 5, the filter assembly 5 is arranged in the negative pressure air intake pipe 2; A dredging component 7, which is disposed in the negative pressure air intake duct 2 and connected to the filter component 5; The diversion component 9 is arranged in the gas diversion pipeline 3 and is connected to the dredging component 7.

[0015] The filter assembly 5 includes two fixed rings 51 fixedly arranged in the negative pressure suction pipe 2, and a filter plate 52 is rotatably arranged between the two fixed rings 51. A trigger assembly 8 is arranged on the filter plate 52. When a spray hole occurs, the negative pressure suction pipe 2 will suck the gas and coal blocks into the rear-end equipment. The filter plate 52 can block the coal blocks to prevent them from clogging the negative pressure suction pipe 2.

[0016] The trigger assembly 8 includes a rotating shaft 81 rotatably arranged on the filter plate 52, a fan blade 82 is fixedly arranged on the rotating shaft 81, a shell 83 is fixedly arranged on the rotating shaft 81, a spring 84 is fixedly arranged in the shell 83, a fixing block 86 is fixedly arranged at one end of the spring 84 away from the shell 83, and a pressure sensor 85 is fixedly arranged at one side of the shell 83 away from the spring 84. When the gas normally enters the negative pressure suction pipe 2, the gas will drive the fan blade 82 to rotate, the rotation of the fan blade 82 drives the rotating shaft 81 to rotate, and the rotation of the rotating shaft 81 drives the shell 83 to rotate. Circular motion. When the outer shell 83 moves in a circular motion, under the action of centrifugal force, the fixed block 86 in the outer shell 83 will continue to press on the pressure sensor 85, and the pressure sensor 85 will send an electrical signal to the servo motor 42, and the servo motor 42 will not run. When the filter plate 52 is blocked, the gas cannot enter the negative pressure suction pipe 2, and the fan blades 82 stop rotating. The fixed block 86 will be away from the pressure sensor 85 under the action of the spring 84, and the pressure sensor 85 will not send an electrical signal to the servo motor 42, and the servo motor 42 will run forward and reverse for a fixed period of time.

[0017] The dredging component 7 includes a driving member 4 and a transmission member 6. The driving member 4 includes a fixed seat 41 fixedly arranged on the negative pressure suction pipe 2, a servo motor 42 is fixedly arranged on the fixed seat 41, a rotating shaft 43 is fixedly arranged at the output end of the servo motor 42, a bevel gear 44 is fixedly arranged at one end of the rotating shaft 43 away from the servo motor 42, the pressure sensor 85 is electrically connected to the servo motor 42, the rotation of the servo motor 42 drives the rotating shaft 43 to rotate, and the rotation of the rotating shaft 43 drives the bevel gear 44 to rotate.

[0018] The transmission member 6 includes a bevel gear 2 61 fixedly arranged on one side of the bevel gear 1 44, the bevel gear 2 61 meshes with the bevel gear 1 44, a rotating shaft 2 62 is fixedly arranged on the end of the bevel gear 2 61 away from the bevel gear 1 44, a connecting frame 66 is arranged on the rotating shaft 2 62, a fixing rod 63 is fixedly arranged on the end of the rotating shaft 2 62 away from the bevel gear 2 61, a guide rail 64 is fixedly arranged on the side of the filter plate 52 close to the fixing rod 63, and a stirring plate 65 is fixedly arranged on the side of the filter plate 52 away from the fixing rod 63 The rotation of the bevel gear 1 44 drives the bevel gear 2 61 to rotate, the rotation of the bevel gear 2 61 drives the rotation of the rotating shaft 2 62, the rotation of the rotating shaft 2 62 drives the fixed rod 63 to rotate, the rotation of the fixed rod 63 will slide in the guide rail 64, thereby driving the filter plate 52 to rotate, the rotation of the filter plate 52 drives the stirring plate 65 to rotate, the rotation of the stirring plate 65 loosens or breaks the coal blocks blocked on the filter plate 52, and is brought into the gas diversion pipeline 3 by the high-pressure gas, thereby restoring the filter plate 52 to be unblocked.

[0019] The flow dividing assembly 9 comprises a fixed plate 91 fixedly arranged in the gas flow dividing pipe 3, a baffle plate 93 is arranged on the fixed plate 91, a plurality of guide rods 92 are fixedly arranged on the baffle plate 93, and the ends of the plurality of guide rods 92 away from the baffle plate 93 all penetrate the fixed plate 91, a guide rod 94 is fixedly arranged on the side of the baffle plate 93 away from the plurality of guide rods 92, a guide block 95 is arranged on the side of the guide rod 94, a screw rod 96 is rotatably arranged on the guide block 95, the end of the screw rod 96 away from the guide block 95 penetrates the gas flow dividing pipe 3, a pulley 1 97 is rotatably arranged on the end of the screw rod 96 away from the guide block 95, a pulley 2 99 is fixedly arranged on the rotating shaft 1 43, a belt 98 is arranged between the pulley 2 99 and the pulley 1 97, and a servo motor 4 is connected to the rotating shaft 1 43. When the servo motor 42 drives the rotating shaft 43 to rotate forward, the rotating shaft 43 drives the pulley 2 99 to rotate, and the rotation of the pulley 2 99 drives the pulley 1 97 to rotate through the belt 98, and the pulley 1 97 drives the screw rod 96 to rotate and move downward, and the movement of the screw rod 96 drives the guide block 95 to move, and the movement of the guide block 95 will make the guide rod 94 lose its obstruction, so that the baffle 93 moves under the action of the high-pressure gas, so that it moves away from the fixed plate 91 to leave space for the high-pressure gas and the coal block to move. When the servo motor 42 is reversed, the screw rod 96 drives the guide block 95 to rise to squeeze the guide rod 94 and the baffle 93, so that the baffle 93 and the fixed plate 91 are closed again, so that the high-pressure gas flows into the negative pressure suction pipe 2 again for subsequent processing.

[0020] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A blowout prevention device for drilling in a coal mine, comprising a blowout prevention device (1), A negative pressure air suction pipeline (2), wherein the negative pressure air suction pipeline (2) is arranged on the anti-spray hole device (1); Features: Also included are: A gas diversion pipeline (3), wherein the gas diversion pipeline (3) is arranged on the negative pressure air intake pipeline (2); A filter assembly (5), wherein the filter assembly (5) is arranged in the negative pressure air intake duct (2); A dredging component (7), wherein the dredging component (7) is arranged in the negative pressure air intake duct (2) and is connected to the filter component (5); A flow diversion component (9), wherein the flow diversion component (9) is arranged in the gas diversion pipeline (3) and is connected to the unblocking component (7).

2. The optical device for high-spectrum shadowless uniform illumination according to claim 1, It is characterized in that The filter assembly (5) comprises two fixing rings (51) arranged in the negative pressure air intake duct (2), a filter plate (52) being arranged between the two fixing rings (51), and a trigger assembly (8) being arranged on the filter plate (52).

3. The optical device for high-spectrum shadowless uniform illumination according to claim 2, It is characterized in that The trigger assembly (8) comprises a rotating shaft (81) arranged on the filter plate (52), a fan blade (82) being arranged on the rotating shaft (81), a housing (83) being arranged on the rotating shaft (81), a spring (84) being arranged in the housing (83), a fixing block (86) being arranged at one end of the spring (84) away from the housing (83), and a pressure sensor (85) being arranged in the housing (83) at one side away from the spring (84).

4. The optical device for high-spectrum shadowless uniform illumination according to claim 3, It is characterized in that The dredging component (7) comprises a driving member (4) and a transmission member (6); the driving member (4) comprises a fixing seat (41) arranged on the negative pressure suction duct (2); a servo motor (42) is arranged on the fixing seat (41); a rotating shaft (43) is arranged at an output end of the servo motor (42); a bevel gear (44) is arranged at an end of the rotating shaft (43) away from the servo motor (42); and the pressure sensor (85) is electrically connected to the servo motor (42).

5. The optical device for high-spectrum shadowless uniform illumination according to claim 4, It is characterized in that The transmission member (6) comprises a second bevel gear (61) arranged on one side of the first bevel gear (44), the second bevel gear (61) being meshed with the first bevel gear (44), a second rotating shaft (62) being arranged at one end of the second bevel gear (61) away from the first bevel gear (44), a connecting frame (66) being arranged on the second rotating shaft (62), a fixing rod (63) being arranged at one end of the second rotating shaft (62) away from the second bevel gear (61), a guide rail (64) being arranged at one side of the filter plate (52) close to the fixing rod (63), and a stirring plate (65) being arranged at one side of the filter plate (52) away from the fixing rod (63).

6. The optical device for high-spectrum shadowless uniform illumination according to claim 5, It is characterized in that The flow distribution component (9) comprises a fixed plate (91) arranged in the gas flow distribution pipeline (3), a baffle plate (93) being arranged on the fixed plate (91), a plurality of guide rods (92) being arranged on the baffle plate (93), the ends of the plurality of guide rods (92) away from the baffle plate (93) all passing through the fixed plate (91), a guide rod (94) being arranged on the side of the baffle plate (93) away from the plurality of guide rods (92), a guide block (95) being arranged on one side of the guide rod (94), a screw rod (96) being arranged on the guide block (95), the end of the screw rod (96) away from the guide block (95) passing through the gas flow distribution pipeline (3), a pulley 1 (97) being arranged on the end of the screw rod (96) away from the guide block (95), a pulley 2 (99) being arranged on the rotating shaft 1 (43), a belt (98) being arranged between the pulley 2 (99) and the pulley 1 (97).

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