Gas-liquid separation device for coal mining waste gas treatment

Abstract

The invention relates to the technical field of waste gas separation, in particular to a gas-liquid separation device for coal mining waste gas treatment, a separation mechanism comprises a shell, one side of the shell is communicated with a gas inlet pipe, the other side of the shell is communicated with a fixing pipe, the bottom end of the shell is communicated with a collecting mechanism, and the shell is fixedly connected with a gear motor; the output end of the speed reduction motor extends into the shell and is fixedly connected with a fixing column, a plurality of mounting frames are connected to the fixing column at equal intervals in the axis direction, each mounting frame is matched with the shell, and each mounting frame is fixedly connected with a first filter screen. Particle impurities in waste gas are filtered through the rotating first filter screen, and when the filtered waste gas enters the cyclone shell, the collision strength of the particle impurities on the inner wall of the cyclone shell is reduced, so that the abrasion effect on the inner wall of the cyclone shell during gas-liquid separation is reduced, the inner wall of the cyclone shell is protected, and the service life of the cyclone shell is prolonged. And therefore, the service life of the cyclone shell is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas separation, and particularly to a gas-liquid separation device for treating waste gas in coal mine exploitation. Background Art

[0002] Coal mine exploitation refers to a series of activities and processes of extracting coal resources from underground or open-pit coal mines. It is a complex and multi-link project, involving geological exploration, mine design, selection of mining methods, coal transportation, ventilation and drainage, etc. During the coal mine exploitation process, various waste gases will be generated, such as coalbed methane, etc. These waste gases often contain components such as water vapor, dust, sulfur-containing substances, carbon dioxide, methane, etc., and need to be effectively separated by gas-liquid separation to facilitate subsequent treatment of the waste gas.

[0003] When separating gas-liquid from waste gas, a cyclone separator is generally used for separation. The waste gas makes a high-speed rotational motion in the cyclone separator to generate a centrifugal force, which throws the liquid droplets in the waste gas towards the wall of the separator, thereby realizing gas-liquid separation. It has the advantages of high separation efficiency, large processing capacity, small floor area, etc. When the waste gas enters the cyclone separator for gas-liquid separation, there are many debris particles in the waste gas. The debris enters the cyclone separator along with the waste gas. Under the action of the centrifugal force, the particulate debris continuously collides with the inner wall of the cyclone separator, and the particulate debris continuously wears the inner wall of the cyclone separator, thereby accelerating the degree of damage to the inner wall of the cyclone separator, accelerating the wear speed of the cyclone separator, and further reducing the service life of the cyclone separator. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that particulate debris continuously wears the inner wall of the cyclone separator, accelerates the wear speed of the cyclone separator, and reduces the service life of the cyclone separator, and to propose a gas-liquid separation device for treating waste gas in coal mine exploitation.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] Design a gas-liquid separation device for treating waste gas in coal mine exploitation, including a cyclone housing. The upper end of the cyclone housing is connected to a gas discharge pipe. The cyclone housing is connected to an air inlet pipe. One end of the air inlet pipe is connected to a separation mechanism. One side of the separation mechanism is connected to a fixed pipe. The bottom end of the separation mechanism is connected to a collection mechanism, and the collection mechanism is connected to the bottom end of the cyclone housing;

[0007] The separation mechanism includes a housing. One side of the housing is connected to the intake pipe, the other side of the housing is connected to the fixed pipe, the bottom end of the housing is connected to the collection mechanism, a reduction motor is fixedly connected to the housing, the output end of the reduction motor extends into the housing and is fixedly connected to a fixed column, a plurality of mounting frames are connected to the fixed column at equal intervals along the axial line direction, each mounting frame cooperates with the housing, and a first filter screen is fixedly connected to each mounting frame.

[0008] Preferably, an anti-wear coating is sprayed on the inner wall of the cyclone housing.

[0009] Preferably, a gas discharge pipe is connected to the upper end of the cyclone housing.

[0010] Preferably, the collection mechanism includes a support rod. One end of the support rod is fixedly connected to the cyclone housing, a collection box is fixedly connected to one end of the support rod, a first connecting pipe is connected to the upper end of the collection box, one end of the first connecting pipe is connected to the housing, a second filter screen is fixedly connected inside the collection box, a second connecting pipe is connected to the bottom end of the collection box, one end of the second connecting pipe is connected to the bottom end of the cyclone housing, and a valve is fixedly connected to the second connecting pipe.

[0011] Preferably, a maintenance opening is provided at the upper end of the collection box, and a maintenance plate is connected to the maintenance opening.

[0012] Preferably, the collection box is a transparent box.

[0013] Preferably, an acceleration mechanism is connected to the intake pipe. The acceleration mechanism includes a support frame. The support frame is fixedly connected to the support rod, an air pump is fixedly connected to the upper end of the support frame, a third connecting pipe is connected to the outlet of the air pump, one end of the third connecting pipe is connected to a circular pipe, the intake pipe passes through the circular pipe, a plurality of exhaust pipes are connected to the inner wall of the circular pipe, one end of each exhaust pipe extends into the circular pipe, and the outlet of each exhaust pipe is arranged towards the cyclone housing.

[0014] Preferably, a treatment box is connected to the upper end of the support frame. The treatment box is connected to the inlet of the air pump, and a third filter screen is connected to the treatment box.

[0015] Preferably, a flow retardation mechanism is fixedly connected to the inner bottom end of the cyclone housing. The flow retardation mechanism includes a fixed ring. The fixed ring is fixedly connected to the inner bottom wall of the cyclone housing, a groove is provided at the bottom end of the inner ring wall of the fixed ring, a movable plate is slidably connected to the groove, a spring is fixedly connected to the bottom end of the movable plate, and one end of the spring is fixedly connected to the inner wall of the cyclone housing.

[0016] Preferably, guide columns are fixedly connected to both sides of the upper end of the movable plate, and each guide column passes through the fixed ring.

[0017] The gas-liquid separation device for treating waste gas in coal mine exploitation proposed by the present invention has the following beneficial effects:

[0018] 1. The reduction motor drives the fixed column to rotate, the fixed column drives a plurality of mounting frames to rotate, each mounting frame drives the first filter screen to rotate, and the rotating first filter screen filters the particulate impurities in the waste gas. When the filtered waste gas enters the cyclone housing, the collision intensity of the particulate impurities against the inner wall of the cyclone housing is reduced, thereby reducing the wear effect on the inner wall of the cyclone housing during gas-liquid separation, protecting the inner wall of the cyclone housing, and further prolonging the service life of the cyclone housing;

[0019] 2. Since the particulate impurities cannot pass through the second filter screen, the particulate impurities accumulate on the upper end of the second filter screen, while the liquid passes through the second filter screen and falls to the bottom of the collection box. The valve is opened, and the liquid at the bottom of the collection box passes through the second connecting pipe and enters the bottom of the cyclone housing, and is released from the liquid discharge port. The liquid is filtered through the second filter screen, facilitating the separation of the liquid from the particulate impurities;

[0020] 3. After the air pump is started, the air sucked is introduced into the circular pipe through the third connecting pipe, and the air in the circular pipe is released from the exhaust pipe. The released gas has the same flow direction as the waste gas, accelerating the waste gas flowing in the intake pipe, ensuring the speed of the waste gas entering the cyclone housing, and thus improving the separation effect of the cyclone housing on the waste gas;

[0021] 4. When the extrusion force of the liquid on the movable plate is greater than the spring force, the movable plate moves downward. After the movable plate moves downward for a certain distance, it separates from the groove, and the liquid at the upper end of the movable plate is released from the gap between the movable plate and the groove. Since the liquid at the upper end of the movable plate has a certain height, the waste gas cannot be released from the gap between the movable plate and the groove when the liquid is discharged, and no waste gas is released during the liquid discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a gas-liquid separation device for treating waste gas in coal mine exploitation proposed by the present invention Figure 1 ;

[0023] Figure 2 is a schematic structural diagram of a gas-liquid separation device for treating waste gas in coal mine exploitation proposed by the present invention Figure 2 ;

[0024] Figure 3 is a schematic cross-sectional structural diagram of a gas-liquid separation device for treating waste gas in coal mine exploitation proposed by the present invention;

[0025] Figure 4 This is a structural schematic diagram of the connection between the air inlet pipe and the separation mechanism in a gas-liquid separation device for treating coal mining waste gas proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the cyclone housing and the slow flow mechanism in a gas-liquid separation device for treating coal mining waste gas proposed by the present invention;

[0027] Figure 6 This is a cross-sectional structural schematic diagram of a cyclone housing and a slow flow mechanism in a gas-liquid separation device for treating coal mining waste gas proposed by the present invention;

[0028] Figure 7 for Figure 6 Schematic diagram of the local enlarged structure at point A above.

[0029] In the figure: 1. cyclone shell; 2. gas discharge pipe; 3. intake pipe; 4. separation mechanism; 5. fixed pipe; 6. collecting mechanism; 7. acceleration mechanism; 8. slow flow mechanism; 41. shell; 42. reduction motor; 43. fixed column; 44. installation frame; 45. first filter; 61. support rod; 62. collecting box; 63. first connecting pipe; 64. inspection plate; 65. second connecting pipe; 66. second filter; 71. support frame; 72. air pump; 73. third connecting pipe; 74. annular pipe; 75. exhaust pipe; 76. processing box; 77. third filter; 81. fixed ring; 82. groove; 83. movable plate; 84. spring; 85. guide column. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1: Reference Figures 1-4 A gas-liquid separation device for treating waste gas from coal mining, comprising a cyclone shell 1, an anti-wear coating is sprayed on the inner wall of the cyclone shell 1, a liquid discharge port is opened at the bottom end of the cyclone shell 1, a gas discharge pipe 2 is connected to the upper end of the cyclone shell 1, an air inlet pipe 3 is connected to the cyclone shell 1, one end of the air inlet pipe 3 is connected to a separation mechanism 4, one side of the separation mechanism 4 is connected to a fixed pipe 5, the bottom end of the separation mechanism 4 is connected to a collecting mechanism 6, and the collecting mechanism 6 is connected to the bottom end of the cyclone shell 1;

[0032] Reference Figure 1, the separation mechanism 4 includes a housing 41. One side of the housing 41 is connected to the intake pipe 3, and the other side of the housing 41 is connected to the fixed pipe 5. The bottom end of the housing 41 is connected to the collection mechanism 6. A reduction motor 42 is fixedly connected to the housing 41. The output end of the reduction motor 42 extends into the housing 41 and is fixedly connected to a fixed column 43. A number of mounting frames 44 are connected to the fixed column 43 at equal intervals along the axis. Each mounting frame 44 cooperates with the housing 41, and a first filter screen 45 is fixedly connected to each mounting frame 44.

[0033] Working process:

[0034] The fixed pipe 5 is connected to the external waste gas release mechanism. After the reduction motor 42 is powered on and started, it drives the fixed column 43 to rotate. The fixed column 43 drives a number of mounting frames 44 to rotate, and each mounting frame 44 drives the first filter screen 45 to rotate. When performing gas-liquid separation, the waste gas is introduced into the fixed pipe 5. The waste gas in the fixed pipe 5 enters the housing 41. The waste gas in the housing 41 contacts the rotating first filter screen 45. The first filter screen 45 filters the particulate impurities in the waste gas. The waste gas passes through the first filter screen 45, and the particulate impurities cannot pass through the first filter screen 45. Since the first filter screen 45 is in a rotating state, when the first filter screen 45 rotates to the vertical position, the particulate impurities on the first filter screen 45 fall to the bottom end of the housing 41 under their own gravity;

[0035] The particulate impurities at the bottom end of the housing 41 fall into the collection mechanism 6. The collection mechanism 6 collects the filtered particulate impurities. The treated waste gas enters the intake pipe 3. The waste gas in the intake pipe 3 enters the cyclone housing 1 along the tangential direction of the inner wall of the cyclone housing 1. Since the waste gas enters the cyclone housing 1 at a certain speed, the waste gas forms a vortex state in the cyclone housing 1. Under the action of centrifugal force, the waste gas is thrown to the inner wall of the cyclone housing 1. The liquid rolls in a vortex along the inner wall of the cyclone housing 1 towards the liquid discharge port. The waste gas in the cyclone housing 1 is released from the upper end of the gas discharge pipe 2, and the separated liquid is released from the liquid discharge port;

[0036] The particulate impurities in the waste gas are filtered by the rotating first filter screen 45. When the filtered waste gas enters the cyclone housing 1, the collision intensity of the particulate impurities on the inner wall of the cyclone housing 1 is reduced, thereby reducing the wear effect on the inner wall of the cyclone housing 1 during gas-liquid separation, protecting the inner wall of the cyclone housing 1, and thus extending the service life of the cyclone housing 1.

[0037] Embodiment 2: When collecting the particulate impurities in the housing 41, a part of the liquid will be filtered out during the filtration process of the particulate impurities by the first filter screen 45. The liquid is mixed with the particulate matter, which is inconvenient to separate the particulate impurities from the liquid, and at the same time, it is inconvenient to clean the particulate impurities. Refer to Figures 2-3, as another preferred embodiment of the present invention, the difference from Embodiment 1 is that the collection mechanism 6 includes a support rod 61. One end of the support rod 61 is fixedly connected to the cyclone housing 1. One end of the support rod 61 is fixedly connected with a collection box 62. The collection box 62 is a transparent box. The upper end of the collection box 62 is communicated with a first connecting pipe 63. One end of the first connecting pipe 63 is communicated with the housing 41. A second filter screen 66 is fixedly connected in the collection box 62. The bottom end of the collection box 62 is communicated with a second connecting pipe 65. One end of the second connecting pipe 65 is communicated to the bottom end of the cyclone housing 1. A valve is fixedly connected to the second connecting pipe 65. An inspection opening is provided at the upper end of the collection box 62, and an inspection plate 64 is connected to the inspection opening.

[0038] Working process:

[0039] The liquid and particulate debris in the housing 41 are introduced onto the second filter screen 66 through the first connecting pipe 63. The particulate debris cannot pass through the second filter screen 66, so that the particulate debris accumulates on the upper end of the second filter screen 66, while the liquid passes through the second filter screen 66 and falls to the bottom end of the collection box 62. Open the valve, and the liquid at the bottom end of the collection box 62 passes through the second connecting pipe 65 and enters the bottom end of the cyclone housing 1, and is released from the liquid discharge port. Filtering is carried out through the second filter screen 66, which is convenient for separating the liquid and particulate debris;

[0040] When the particulate debris on the second filter screen 66 accumulates too much, remove the inspection plate 64, open the collection box 62, and clean the particulate debris on the second filter screen 66, so as to facilitate the cleaning of the filtered particulate debris.

[0041] Embodiment 3: When filtering the particulate matter in the waste gas by rotating the first filter screen 45, the speed of the waste gas decreases after passing through the first filter screen 45, which affects the gas-liquid separation effect of the cyclone housing 1. Refer to Figures 2-4 , as another preferred embodiment of the present invention, the difference from Embodiment 2 is that an acceleration mechanism 7 is communicated with the air inlet pipe 3. The acceleration mechanism 7 includes a support frame 71. The support frame 71 is fixedly connected to the support rod 61. An air pump 72 is fixedly connected to the upper end of the support frame 71. A third connecting pipe 73 is communicated with the outlet of the air pump 72. One end of the third connecting pipe 73 is communicated with a circular pipe 74. The air inlet pipe 3 passes through the circular pipe 74. A plurality of exhaust pipes 75 are communicated with the inner wall of the circular pipe 74. One end of each exhaust pipe 75 extends into the circular pipe 74, and the outlet of each exhaust pipe 75 is arranged towards the cyclone housing 1. A processing box 76 is connected to the upper end of the support frame 71. The processing box 76 is communicated with the inlet of the air pump 72, and a third filter screen 77 is communicated with the processing box 76.

[0042] Working process:

[0043] The support frame 71 supports the air pump 72. After the air pump 72 is started, external air passes through the third filter screen 77 and enters the processing box 76. The third filter screen 77 filters the dust in the air, and the filtered air enters the gas in the air pump 72. The gas in the air pump 72 is introduced into the circular pipe 74 through the third connecting pipe 73. The air in the circular pipe 74 is released from the exhaust pipe 75. The released gas has the same flow direction as the waste gas, accelerating the waste gas flowing in the intake pipe 3, ensuring the speed of the waste gas entering the cyclone housing 1, and thus improving the separation effect of the cyclone housing 1 on the waste gas.

[0044] Embodiment 4: The waste gas in the intake pipe 3 enters the cyclone housing 1 along the tangential direction of the inner wall of the cyclone housing 1. Under the action of centrifugal force, the liquid in the waste gas rolls down along the inner wall of the cyclone housing 1 towards the liquid discharge port. The separated liquid is released from the liquid discharge port. During the liquid discharge process, less waste gas is likely to be released along with the liquid from the liquid discharge port. Refer to Figures 5-7 , as another preferred embodiment of the present invention, different from Embodiment 1, a flow buffering mechanism 8 is fixedly connected to the inner bottom end of the cyclone housing 1. The flow buffering mechanism 8 includes a fixed ring 81, and the fixed ring 81 is fixedly connected to the inner bottom wall of the cyclone housing 1. A groove 82 is formed at the bottom end of the inner ring wall of the fixed ring 81. A movable plate 83 is slidably connected to the groove 82. The bottom end of the movable plate 83 is fixedly connected to a spring 84, and one end of the spring 84 is fixedly connected to the inner wall of the cyclone housing 1. Both sides of the upper end of the movable plate 83 are fixedly connected to a guiding column 85, and each guiding column 85 passes through the fixed ring 81.

[0045] Working process:

[0046] Under the action of centrifugal force, the liquid in the waste gas rolls down along the inner wall of the cyclone housing 1 towards the liquid discharge port. The separated liquid falls on the movable plate 83. As the separation of the liquid in the gas continues, the liquid at the upper end of the movable plate 83 gradually increases, so that the pressure on the movable plate 83 gradually increases, causing the movable plate 83 to move slowly downward. The movable plate 83 moves smoothly under the guidance of the guiding column 85. After the movable plate 83 moves downward, it compresses the spring 84, and the spring 84 generates an elastic force after being compressed. When the squeezing force of the liquid on the movable plate 83 is greater than the elastic force of the spring 84, the movable plate 83 moves downward. After the movable plate 83 moves downward for a certain distance, it separates from the groove 82, and the liquid at the upper end of the movable plate 83 is released from the gap between the movable plate 83 and the groove 82. Since the liquid at the upper end of the movable plate 83 has a certain height, the waste gas cannot be released from the gap between the movable plate 83 and the groove 82 when the liquid is released. After a certain amount of liquid is released, the squeezing force on the movable plate 83 decreases, and under the elastic force of the spring 84, the movable plate 83 is pushed upward to seal the gap between the movable plate 83 and the groove 82, and no waste gas is released during the liquid discharge.

[0047] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A gas-liquid separation device for treating waste gas in coal mine exploitation, comprising a cyclone housing (1), wherein an air inlet pipe (3) is communicated with the cyclone housing (1), and it is characterized in that, Wherein: One end of the intake pipe (3) is communicated with a separation mechanism (4), one side of the separation mechanism (4) is communicated with a fixed pipe (5), the bottom end of the separation mechanism (4) is communicated with a collection mechanism (6), and the collection mechanism (6) is communicated with the bottom end of the cyclone housing (1); The separation mechanism (4) includes a housing (41). One side of the housing (41) is communicated with the intake pipe (3), the other side of the housing (41) is communicated with the fixed pipe (5), the bottom end of the housing (41) is communicated with the collection mechanism (6). A reduction motor (42) is fixedly connected to the housing (41). The output end of the reduction motor (42) extends into the housing (41) and is fixedly connected to a fixed column (43). A plurality of mounting frames (44) are connected to the fixed column (43) at equal intervals along the axial line direction. Each mounting frame (44) cooperates with the housing (41), and a first filter screen (45) is fixedly connected to each mounting frame (44).

2. The gas-liquid separation device for treating waste gas in coal mine mining according to claim 1, characterized in that, An anti-wear coating is sprayed on the inner wall of the cyclone housing (1).

3. The gas-liquid separation device for treating waste gas in coal mine exploitation according to claim 2, characterized in that, The upper end of the cyclone housing (1) is communicated with a gas discharge pipe (2).

4. The gas-liquid separation device for treating waste gas in coal mining according to claim 1, characterized in that The collection mechanism (6) includes a support rod (61). One end of the support rod (61) is fixedly connected to the cyclone housing (1). A collection box (62) is fixedly connected to one end of the support rod (61). The upper end of the collection box (62) is communicated with a first connecting pipe (63). One end of the first connecting pipe (63) is communicated with the housing (41). A second filter screen (66) is fixedly connected inside the collection box (62). The bottom end of the collection box (62) is communicated with a second connecting pipe (65). One end of the second connecting pipe (65) is communicated with the bottom end of the cyclone housing (1). A valve is fixedly connected to the second connecting pipe (65).

5. The gas-liquid separation device for treating waste gas in coal mine mining according to claim 4, wherein An inspection opening is provided at the upper end of the collection box (62), and an inspection plate (64) is connected to the inspection opening.

6. The gas-liquid separation device for treating waste gas in coal mining according to claim 5, characterized in that, The collection box (62) is a transparent box.

7. The gas-liquid separation device for treating waste gas in coal mine mining according to claim 6, characterized in that, An acceleration mechanism (7) is communicated with the intake pipe (3). The acceleration mechanism (7) includes a support frame (71). The support frame (71) is fixedly connected to the support rod (61). An air pump (72) is fixedly connected to the upper end of the support frame (71). A third connecting pipe (73) is communicated with the outlet of the air pump (72). One end of the third connecting pipe (73) is communicated with an annular pipe (74). The intake pipe (3) passes through the annular pipe (74). A plurality of exhaust pipes (75) are communicated with the inner wall of the annular pipe (74). One end of each exhaust pipe (75) extends into the annular pipe (74), and the outlet of each exhaust pipe (75) is arranged towards the cyclone housing (1).

8. The gas-liquid separation device for treating waste gas in coal mine exploitation according to claim 7, characterized in that, A processing box (76) is connected to the upper end of the support frame (71). The processing box (76) is communicated with the inlet of the air pump (72), and a third filter screen (77) is communicated with the processing box (76).

9. The gas-liquid separation device for treating waste gas in coal mine exploitation according to claim 1, characterized in that A flow-attenuating mechanism (8) is fixedly connected to the inner bottom end of the cyclone housing (1). The flow-attenuating mechanism (8) includes a fixed ring (81), and the fixed ring (81) is fixedly connected to the inner wall of the bottom end of the cyclone housing (1). A groove (82) is formed at the bottom end of the inner ring wall of the fixed ring (81), and a movable plate (83) is slidably connected to the groove (82). A spring (84) is fixedly connected to the bottom end of the movable plate (83), and one end of the spring (84) is fixedly connected to the inner wall of the cyclone housing (1).

10. The gas-liquid separation device for treating waste gas in coal mine mining according to claim 9, wherein, Guide columns (85) are fixedly connected to both sides of the upper end of the movable plate (83), and each guide column (85) passes through the fixed ring (81).

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