Integrated Coalbed Methane Purification Device

Abstract

The present invention discloses an integrated coalbed methane purification device, which relates to the technical field of coalbed methane. It includes a primary filter box and also a purification box. The input end of the purification box is fixedly installed at the output end of the primary filter box. At the entrance inside the purification box, a volume reduction channel is fixedly installed. The input port diameter of the volume reduction channel is larger than the output port diameter. The output end of the volume reduction channel is rotatably installed with a transmission channel, and the transmission channel is rotatably installed in an expansion channel. The input port diameter of the expansion channel is smaller than the output port diameter. The output end of the expansion channel is fixedly installed outside an activated carbon purification plate. By setting an air flow channel combination that first becomes smaller and then becomes larger, which is composed of three channels in the purification box, and a partition cover and spiral fins are arranged in the expansion channel, the adsorption effect of coalbed methane on the activated carbon purification plate is effectively improved, the air flow is evenly distributed, the overall utilization rate of the activated carbon purification plate is effectively increased, and thus the overall working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coalbed methane, and particularly to an integrated coalbed methane purification device. Background Art

[0002] Coalbed methane is a gas resource associated with and coexisting with coal. Its main component is methane, and it also contains a small amount of carbon dioxide, nitrogen, etc. It is a clean energy source with advantages such as high calorific value and low pollution. The extraction technologies of coalbed methane include surface extraction and underground extraction. Surface extraction mainly includes vertical wells, horizontal wells, etc., and underground extraction is carried out by pumping in coal mines. Coalbed methane can be used in fields such as power generation, heating, industrial fuel, etc., and can also be used as a chemical raw material to produce products such as methanol and synthetic ammonia.

[0003] Necessity of purification: Coalbed methane contains impurities such as hydrogen sulfide, carbon dioxide, moisture, etc. These impurities will affect the quality and utilization efficiency of coalbed methane, so purification treatment is required. Purification methods: The purification methods of coalbed methane include physical adsorption, chemical absorption, membrane separation, etc. Physical adsorption method is to use adsorbents to adsorb impurities for purification; chemical absorption method is to convert impurities into other substances through chemical reactions; membrane separation method is to use the selective permeability of the membrane for separation.

[0004] In the prior art, in the selection of coalbed methane purification devices, physical adsorption methods are usually used for treatment. Physical adsorption methods usually use activated carbon adsorption plates for purification adsorption. However, when coalbed methane is transmitted to the activated carbon adsorption plate, it is difficult to be transmitted to the entire surface of the activated carbon adsorption plate, and only local positions on the activated carbon adsorption plate are used, resulting in a low utilization rate of the activated carbon adsorption plate, and frequent replacement is required, which affects the overall working efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated coalbed methane purification device to solve the problem of the low utilization rate of the above-mentioned activated carbon adsorption plate.

[0006] The present invention is achieved through the following technical solutions:

[0007] An integrated coalbed methane purification device includes a primary filter box, and further includes:

[0008] Purification box, the input end of the purification box is fixedly installed at the output end of the primary filter box. At the entrance inside the purification box, a volume reduction channel is fixedly installed. The input port diameter of the volume reduction channel is larger than the output port diameter. The output end of the volume reduction channel is rotatably installed with a transmission channel. The transmission channel is rotatably installed in the expansion channel. The input port diameter of the expansion channel is smaller than the output port diameter. The output end of the expansion channel is fixedly installed outside the activated carbon purification plate. The activated carbon purification plate is fixedly installed on the inner outer wall of the purification box. The airflow channel that changes from large to small and then to large helps to aggregate and then disperse the airflow, which is conducive to achieving a more uniform distribution of coalbed methane on the surface of the activated carbon purification plate.

[0009] Further, an air suction fan is fixedly installed in the transmission channel. A partition cover is fixedly installed outside the activated carbon purification plate. The input port diameter of the partition cover is smaller than the output port diameter. The partition cover divides the inner part of the expansion channel into two parts. The part inside the partition cover is the inner space, and the part outside the partition cover is the outer space. A spiral fin is fixedly installed outside the partition cover. The spiral fin can make the airflow form a spiral flow in the channel, so that the airflow is more evenly distributed in the whole channel.

[0010] Further, a flow splitting mechanism is also arranged in the transmission channel. The flow splitting mechanism includes a rotating ring. The rotating ring is rotatably installed at the input end of the partition cover. A flow splitting plate is fixedly installed outside the rotating ring. The outside of the flow splitting plate is fixedly installed on the inner outer wall of the transmission channel.

[0011] Further, the number of the flow splitting plates is six. The six flow splitting plates are evenly distributed around the circumference of the rotating ring, so that the airflow flows evenly.

[0012] Further, the number of the spiral fins is six groups. The starting segments of the six groups of spiral fins are respectively distributed corresponding to the six flow splitting plates, avoiding the situation of too strong or too weak local airflow.

[0013] Further, through holes are formed in the flow splitting plate. Inclined plates are fixedly installed on the left and right outer walls of the flow splitting plate, which can slow down the airflow speed.

[0014] Further, an auxiliary mechanism is also arranged in the partition cover. The auxiliary mechanism includes a limiting frame. The limiting frame is fixedly installed on the inner outer wall of the partition cover. A hollow plate is slidably installed on the limiting frame. Air holes are formed in the hollow plate, which can generate local airflow jets.

[0015] Further, an elastic element is arranged between the bottom of the hollow plate and the inner outer wall of the partition cover. An arc plate is fixedly installed on the top of the hollow plate. An arc rod is fixedly installed on the inner outer wall of the rotating ring, so that the hollow plate can return to the initial position.

[0016] Further, the outer part of the arc-shaped rod is spherical, and the spherical end of the arc-shaped rod is arranged close to the outside of the arc-shaped plate, reducing the contact area and alleviating wear.

[0017] Further, there are two groups of the limit frames, and the two groups of limit frames are respectively arranged at the front and rear ends of the hollow plate to provide a limiting effect.

[0018] Further, a multi-layer gradient filter screen is arranged inside the primary filter box. The multi-layer gradient filter screen includes a metal filter screen layer, a fiber filter cloth layer and a ceramic particle layer. The aperture of the multi-layer gradient filter screen gradually decreases along the air flow direction, and is used to intercept solid impurities with different particle sizes and separate liquid components.

[0019] Further, the drive motor of the air suction fan is connected with a frequency conversion controller. The frequency conversion controller dynamically adjusts the rotation speed of the air suction fan according to the real-time air pressure data in the purification box to maintain the stability of the air flow pressure.

[0020] Further, the through holes are staggered on the surface of the flow dividing plate, and the diameter of the through holes gradually increases from the root to the end of the flow dividing plate, which is used for gradient dispersion of the air flow and reduction of the turbulence intensity.

[0021] Further, the elastic element is a disc spring, and its stiffness coefficient matches the rotation frequency of the arc-shaped rod, so that the knocking frequency of the hollow plate is controlled within the range of 10 - 20 times per minute, avoiding component fatigue caused by excessive vibration.

[0022] Further, a detachable sealing cover plate is arranged on the top of the purification box. An annular sealing ring is embedded inside the sealing cover plate, and the edge of the sealing cover plate is connected with the purification box through quick-release buckles, which is convenient for the replacement of the activated carbon purification plate and the cleaning and maintenance of the spiral fins.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] 1. The present invention is composed of three channels, namely a volume reduction channel, a transmission channel and a volume expansion channel, to form an air flow channel combination that changes from large to small and then to large. The air flow channel that changes from large to small and then to large helps to polymerize and then disperse the air flow, which is conducive to the more uniform distribution of coalbed methane on the surface of the activated carbon purification plate. And a partition cover and spiral fins are arranged in the volume expansion channel, which can effectively improve the adsorption effect of coalbed methane on the activated carbon purification plate, make the air flow distribution uniform, effectively improve the overall utilization rate of the activated carbon purification plate, and thus improve the overall working efficiency;

[0025] 2. The present invention is provided with a flow splitting mechanism, including six flow splitting plates and inclined plates, which can effectively slow down the air flow velocity. The flow splitting effect of the six groups can reduce the local blockage and wear of the activated carbon purification plate, improve the service life and filtration effect of the activated carbon purification plate, make the air flow more uniform in the channel, avoid the situation of too strong or too weak local air flow, and thus improve the coverage effect of the air flow on the activated carbon purification plate.

[0026] 3. The present invention is provided with an arc-shaped rod and a hollow plate. By the rotation of the rotating ring, the hollow plate can intermittently knock on the partition cover, thereby preventing impurities from adhering to the partition cover and the spiral fins for a long time, improving the smoothness of the channel. At the same time, each time the hollow plate knocks, the air flow passing through the air holes will cause disturbance to the air flow near the air holes, and this disturbance will increase the resistance of the air flow, thus slowing down the air flow velocity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0028] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0029] Figure 2 is a schematic diagram of the internal structure of the purification box;

[0030] Figure 3 is a schematic diagram of the internal structure of the volume reduction channel;

[0031] Figure 4 is a schematic diagram of the internal structure of the volume expansion channel;

[0032] Figure 5 is a schematic diagram of the external structure of the spiral fin;

[0033] Figure 6 is a schematic diagram of the external partial structure of the flow splitting plate;

[0034] Figure 7 is a schematic diagram of the external partial structure of the hollow plate;

[0035] Figure 8 is a schematic diagram of the external partial structure of the rotating ring.

[0036] The reference numerals represent: 1 - purification box, 2 - primary filter box, 3 - volume reduction channel, 4 - transmission channel, 5 - volume expansion channel, 6 - activated carbon purification plate, 7 - suction fan, 8 - partition cover, 9 - spiral fin, 10 - rotating ring, 11 - flow splitting plate, 12 - through hole, 13 - inclined plate, 14 - limiting frame, 15 - hollow plate, 16 - air hole, 17 - arc-shaped plate, 18 - arc-shaped rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and do not limit the present invention. It should be noted that the present invention has been in the actual R & D and use stage.

[0038] Embodiment 1, as Figures 1 to 8 shown, the present invention includes a primary filter box 2, and further includes:

[0039] A purification box 1, the input end of the purification box 1 is fixedly installed at the output end of the primary filter box 2. A volume reduction channel 3 is fixedly installed at the entrance inside the purification box 1. The input port diameter of the volume reduction channel 3 is larger than the output port diameter. A transmission channel 4 is rotatably installed at the output end of the volume reduction channel 3. The transmission channel 4 is rotatably installed in an expansion channel 5. The input port diameter of the expansion channel 5 is smaller than the output port diameter. The output end of the expansion channel 5 is fixedly installed outside an activated carbon purification plate 6. The activated carbon purification plate 6 is fixedly installed on the inner outer wall of the purification box 1;

[0040] An air suction fan 7 is fixedly installed in the transmission channel 4. A partition cover 8 is fixedly installed outside the activated carbon purification plate 6. The input port diameter of the partition cover 8 is smaller than the output port diameter. The partition cover 8 divides the interior of the expansion channel 5 into two parts. The interior of the partition cover 8 is the inner space, and the exterior of the partition cover 8 is the outer space. A spiral fin 9 is fixedly installed outside the partition cover 8.

[0041] In the above technical solution, the coalbed methane first filters out the doped solid and liquid impurities through the primary filter box 2, and then the coalbed methane will enter the purification box 1. By starting the suction fan 7 in the purification box 1, power is provided for the preliminarily filtered coalbed methane. The coalbed methane in the purification box 1 will sequentially pass through the volume reduction channel 3, the transmission channel 4, and the volume expansion channel 5, and then undergo a purification operation through the activated carbon purification plate 6. The volume reduction channel 3, the transmission channel 4, and the volume expansion channel 5 form an air flow channel combination that changes from large to small and then to large. The aggregation and then dispersion of the air flow in the air flow channel that changes from large to small and then to large helps to achieve a more uniform distribution of the coalbed methane on the surface of the activated carbon purification plate 6. When the air flow enters the small channel from the large channel, the air flow is aggregated and the flow rate relatively increases, enabling the components in the coalbed methane to mix better. Then, when entering the large channel from the small channel, the air flow is dispersed by the partition cover 8 provided in the volume expansion channel 5. Under the action of the diversion structure, the coalbed methane is diverted into the air flow in the middle and around, which further refines the distribution of the air flow, enabling the air flow to more comprehensively cover the activated carbon purification plate 6. This effect of uniform distribution helps to improve the overall adsorption efficiency of the activated carbon purification plate 6, avoiding the situation of excessive adsorption in some parts and insufficient adsorption in other parts. The process of aggregation and then dispersion of the air flow changes the flow state of the coalbed methane. During the aggregation process, the air flow speed increases, increasing the collision frequency between the coalbed methane molecules, which helps to convert some components that are originally difficult to adsorb into a state that is more easily adsorbed by the activated carbon. During the dispersion process, the air flow rushes towards the activated carbon adsorption plate in different directions and speeds, increasing the diversity of the contact opportunities and angles between the coalbed methane molecules and the activated carbon surface. This multi-angle and multi-opportunity contact can enhance the adsorption driving force and improve the adsorption effect. At the same time, spiral vanes 9 are provided outside the partition cover 8. The spiral vanes 9 can make the air flow form a spiral flow in the channel, so that the air flow is more evenly distributed in the entire channel, reducing the local concentration and eddy current phenomena of the air flow, improving the stability and uniformity of the air flow, and making the air flow generate a rotational movement in the channel. This can increase the turbulence degree of the air flow, increase the contact area and contact time between the air flow and the activated carbon adsorption plate, thereby improving the adsorption efficiency. The spiral diversion design can make the air flow generate more mixing and disturbance during the flow process, promote the full mixing of different components in the air flow, improve the mixing efficiency of the air flow, reduce the resistance and pressure loss of the air flow, thereby reducing the energy consumption of the fan, improving the energy utilization efficiency, saving energy, and reducing the operation cost. Finally, by setting an air flow channel combination that changes from large to small and then to large, which is composed of three channels in the purification box 1, and setting a partition cover 8 and spiral vanes 9 in the volume expansion channel 5, the adsorption effect of the coalbed methane on the activated carbon purification plate 6 can be effectively improved, and the air flow distribution can be made uniform, effectively improving the overall utilization rate of the activated carbon purification plate 6, thereby improving the overall working efficiency.

[0042] Such as Figure 5 And Figure 6As shown in the figure, in the present invention, a flow splitting mechanism is further provided. The flow splitting mechanism includes a rotating ring 10, which is rotatably installed at the input end of the partition cover 8. A flow splitting plate 11 is fixedly installed on the outside of the rotating ring 10, and the outside of the flow splitting plate 11 is fixedly installed on the inner outer wall of the transmission channel 4. The number of the flow splitting plates 11 is six, and the six flow splitting plates 11 are evenly distributed around the circumference of the rotating ring 10. The number of the spiral vanes 9 is six groups, and the starting segments of the six groups of spiral vanes 9 are respectively distributed corresponding to the six flow splitting plates 11. Through holes 12 are formed in the flow splitting plates 11, and inclined plates 13 are fixedly installed on the left and right outer walls of the flow splitting plates 11.

[0043] In the above technical solution, the transmission channel 4 rotates due to the rotation of the suction fan 7. The rotation of the transmission channel 4 will drive the flow splitting plate 11 and the rotating ring 10 to rotate together. During the process of the transmission channel 4 transmitting coalbed methane into the expansion channel 5, the coalbed methane will be split by the flow splitting plate 11 on the rotating ring 10 into two groups of airflows, namely the central and edge airflows. The edge airflows will enter the positions of the six groups of spiral vanes 9 through the six flow splitting plates 11 respectively for further splitting. The rotation of the transmission channel 4 causes the flow splitting plate 11 to also rotate. The rotation of the flow splitting plate 11 disturbs the nearby airflows through its own through holes 12, slowing down the air flow velocity. The inclined plate 13 can improve the air flow coverage. The setting of the inclined plate 13 can make the air flow more uniform in the channel, avoiding the situation of too strong or too weak local airflows, thereby improving the coverage effect of the air flow on the activated carbon purification plate 6. It can also reduce the air flow impact. Slowing down the air flow velocity can reduce the impact of the air flow on the activated carbon purification plate 6, reduce the wear and damage to the surface of the activated carbon purification plate 6, and extend the service life of the activated carbon purification plate 6. The uniform air flow distribution and the lower air flow velocity contribute to improving the quality and stability of adsorption, reducing the fluctuations and errors in the adsorption process. Finally, by setting the six flow splitting plates 11 and the inclined plates 13, the air flow velocity can be effectively slowed down, and the splitting effect of the six groups can reduce the local blockage and wear of the activated carbon purification plate 6, improve the service life and filtering effect of the activated carbon purification plate 6, make the air flow more uniform in the channel, and avoid the situation of too strong or too weak local airflows, thereby improving the coverage effect of the air flow on the activated carbon purification plate 6.

[0044] Embodiment 2. On the basis of Embodiment 1, this embodiment is further provided with an auxiliary mechanism, such as Figure 4 、 Figure 6 、 Figure 7 and Figure 8As shown in the figure, the auxiliary mechanism includes a limit frame 14, which is fixedly installed on the inner outer wall of the partition cover 8. A hollow plate 15 is slidably installed on the limit frame 14, and air holes 16 are provided on the hollow plate 15. An elastic element is provided between the bottom of the hollow plate 15 and the inner outer wall of the partition cover 8. Here, the elastic element used is a metal shrapnel, so that the movement of the hollow plate 15 has an elastic restoring force. In the absence of external force, the hollow plate 15 can return to its initial position through the elastic force. An arc-shaped plate 17 is fixedly installed on the top of the hollow plate 15. An arc-shaped rod 18 is fixedly installed on the inner outer wall of the rotating ring 10. The outer part of the arc-shaped rod 18 is spherical to reduce the contact area and reduce wear. The spherical end of the arc-shaped rod 18 is arranged close to the outside of the arc-shaped plate 17. The number of limit frames 14 is two groups, which are respectively arranged at the front and rear ends of the hollow plate 15, so as to limit the hollow plate 15 between the two groups of limit frames 14, so that the hollow plate 15 can only slide up and down.

[0045] Embodiment 3: On the basis of Embodiment 1, the structure and function of the integrated coalbed methane purification device are further optimized, and the specific improvements are as follows.

[0046] Inside the primary filter box 2, a metal filter layer, a fiber filter cloth layer and a ceramic particle layer are fixedly installed in sequence along the airflow direction. The metal filter layer has a pore size of 2 mm, which is used to intercept larger particles of coal slag in coalbed methane; the fiber filter cloth layer is woven with hydrophobic polyester fiber, which can adsorb liquid components and prevent agglomeration; the ceramic particle layer is filled with porous ceramic balls with a pore size of 0.5 mm, which is used to further filter micron-level dust. Through the gradient aperture design (gradually reduced from 2 mm to 0.5 mm), the graded interception of solid impurities and the effective separation of liquid components are achieved, reducing the risk of blockage in the subsequent purification box 1. The drive motor of the suction fan 7 is connected to a frequency conversion controller, and the frequency conversion controller has a built-in pressure sensor to monitor the air pressure data in the purification box 1 in real time. When the air pressure is lower than the preset threshold, the frequency conversion controller automatically increases the speed of the suction fan 7 to enhance the suction force. When the air pressure is too high, the speed is reduced to avoid overloading the activated carbon purification plate 6. This design can dynamically maintain the stability of the airflow pressure and balance the purification efficiency and energy consumption (experiments show that the energy saving rate is 15%-20%). The through holes 12 on the surface of the splitter plate 11 are arranged in a staggered diamond array, and the diameter of the through holes gradually increases from the root near the rotating ring 10 to the end. This design produces a gradient diffusion effect when the airflow passes through the splitter plate 11. The small holes at the root initially disperse the airflow, and the large holes at the end further reduce the flow rate. Combined with the diversion effect of the inclined plate 13, the turbulence intensity is reduced by 30%-40%, ensuring that the airflow evenly covers the surface of the activated carbon purification plate 6. The elastic element is a butterfly spring with a stiffness coefficient of 50N / mm, which matches the rotation frequency of the arc rod 18 (determined by the speed of the transmission channel 4). When the suction fan 7 runs at rated power, the rotation frequency of the arc rod 18 is 15 times / minute, and the deformation of the butterfly spring is controlled within the range of 2mm-3mm, so that the knocking frequency of the hollow plate 15 on the partition cover 8 is stabilized at 12-18 times / minute, which can effectively shake off the attached impurities and avoid high-frequency vibration causing metal fatigue of the limit frame 14 or the hollow plate 15. An openable sealing cover is added to the top of the purification box 1. A ring-shaped sealing ring made of high-temperature resistant silicone is embedded inside the cover. The edge of the cover is locked with the purification box 1 through four sets of quick-release buckles. When it is necessary to replace the activated carbon purification plate 6 or clean the spiral sheet 9, the cover can be lifted up by simply releasing the buckle. The operation time is shortened from 30 minutes for traditional bolt disassembly to 5 minutes, which significantly improves the convenience of maintenance.

[0047] Embodiment 4: Based on embodiment 1, this embodiment proposes a specific working principle of an integrated coalbed methane purification device.

[0048] In the above technical solution, during the rotation of the transmission channel 4, the transmission channel 4 drives the rotating ring 10 to rotate through the shunt plate 11. The rotating ring 10 can then drive the arc-shaped rod 18 to rotate accordingly. As the arc-shaped rod 18 rotates, the spherical end of the arc-shaped rod 18 will gradually approach the arc-shaped plate 17 at the top of the hollow plate 15. When the spherical end of the arc-shaped rod 18 touches the outside of the arc-shaped plate 17, the arc-shaped rod 18 continues to rotate with the rotating ring 10, and the spherical end of the arc-shaped rod 18 will squeeze the outside of the arc-shaped plate 17, causing the arc-shaped plate 17 to push the hollow plate 15 downward. As a result, the hollow plate 15 moves downward along the limiting frame 14 to strike the inner outer wall of the partition cover 8, causing the partition cover 8 to vibrate. The vibration can prevent impurities from adhering to the partition cover 8. At the same time, the vibration will also be transmitted to the spiral fin 9 to prevent impurities from adhering to the spiral fin 9 and affecting the working efficiency. When the spherical end of the arc-shaped rod 18 separates from the arc-shaped plate 17, the hollow plate 15 will move upward to return to its initial position due to the elastic force of the elastic element. During the process of the rotating ring 10 driving the arc-shaped rod 18 to rotate, each time the arc-shaped rod 18 contacts the arc-shaped plate 17, the hollow plate 15 will strike the inner outer wall of the partition cover 8. Each time the hollow plate 15 strikes the inner outer wall of the partition cover 8, the striking force will cause the hollow plate 15 to vibrate. Since the hollow plate 15 is a hollow structure and the internal air is enclosed therein, when the hollow plate 15 strikes, the air flow passing through the air holes 16 will cause disturbances to the air flow near the air holes 16. This kind of disturbance will increase the resistance of the air flow, thereby slowing down the flow rate of the air flow. At the same time, when the air flow passes through the air holes 16, it will have a certain scouring effect on the surface of the hollow plate 15. This scouring effect can reduce the adhesion and accumulation of impurities on the surface of the hollow plate 15. And the air flow passing through the air holes 16 will cause continuous exchange and mixing of the gas near the air holes 16. This kind of gas exchange and mixing can improve the quality and utilization efficiency of the gas. Finally, by setting the arc-shaped rod 18 and the hollow plate 15, and using the rotation of the rotating ring 10, the hollow plate 15 can intermittently strike the partition cover 8, thereby preventing impurities from adhering to the partition cover 8 and the spiral fin 9 for a long time and improving the smoothness of the channel during use. To sum up, by setting up an air flow channel combination that first gets larger, then smaller, and then larger again, which is composed of three channels in the purification box 1, and setting the partition cover 8 and the spiral fin 9 in the expansion channel 5, the adsorption effect of the coalbed methane on the activated carbon purification plate 6 can be effectively improved, the air flow distribution can be made uniform, the overall utilization rate of the activated carbon purification plate 6 can be effectively increased, thereby improving the overall working efficiency. And by using the shunt mechanism to slow down the air flow speed, the air flow can flow more evenly, improving the filtration effect.

[0049] The specific embodiments described above further elaborate on the objective, technical solution and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated coalbed methane purification device, comprising a primary filter box (2), characterized in that: Also includes: A purification box (1), wherein the input end of the purification box (1) is fixedly mounted on the output end of the primary filter box (2), a volume reduction channel (3) is fixedly mounted at the entrance inside the purification box (1), the input port diameter of the volume reduction channel (3) is larger than the output port diameter, a transmission channel (4) is rotatably mounted on the output end of the volume reduction channel (3), the transmission channel (4) is rotatably mounted on the volume expansion channel (5), the input port diameter of the volume expansion channel (5) is smaller than the output port diameter, the output end of the volume expansion channel (5) is fixedly mounted on the outside of an activated carbon purification plate (6), the activated carbon purification plate (6) is fixedly mounted on the inner outer wall of the purification box (1), and a suction fan ( 7), a partition cover (8) is fixedly mounted on the outside of the activated carbon purification plate (6), the partition cover (8) divides the inside of the expansion channel (5) into two parts, the inside of the partition cover (8) is an inner space, and the outside of the partition cover (8) is an outer space, a spiral sheet (9) is fixedly mounted on the outside of the partition cover (8), and a diversion mechanism is also provided in the transmission channel (4), the diversion mechanism comprises a rotating ring (10), the rotating ring (10) is rotatably mounted on the input end of the partition cover (8), and a diversion plate (11) is fixedly mounted on the outside of the rotating ring (10), and the diversion plate (11) is fixedly mounted on the inside outer wall of the transmission channel (4).

2. The integrated coalbed methane purification device according to claim 1 is characterized in that: The diameter of the input port of the separation cover (8) is smaller than the diameter of the output port.

3. The integrated coalbed methane purification device according to claim 1 is characterized in that: The number of the diverter plates (11) is six, and the six diverter plates (11) are evenly distributed about the circumference of the rotating ring (10).

4. The integrated coalbed methane purification device according to claim 1 is characterized in that: The spiral blades (9) are provided in six groups, and the starting sections of the six groups of spiral blades (9) are respectively distributed corresponding to the six flow dividing plates (11).

5. The integrated coalbed methane purification device according to claim 1 is characterized in that: The diverter plate (11) is provided with a through hole (12), and inclined plates (13) are fixedly mounted on the left and right outer walls of the diverter plate (11).

6. The integrated coalbed methane purification device according to claim 5 is characterized in that: An auxiliary mechanism is also provided in the partition cover (8), the auxiliary mechanism comprising a limit frame (14), the limit frame (14) being fixedly mounted on the inner outer wall of the partition cover (8), a hollow plate (15) being slidably mounted on the limit frame (14), and a vent (16) being provided on the hollow plate (15).

7. The integrated coalbed methane purification device according to claim 6, characterized in that: An elastic element is provided between the bottom of the hollow plate (15) and the inner outer wall of the partition cover (8), an arc-shaped plate (17) is fixedly mounted on the top of the hollow plate (15), and an arc-shaped rod (18) is fixedly mounted on the inner outer wall of the rotating ring (10).

8. The integrated coalbed methane purification device according to claim 7, characterized in that: The exterior of the arc-shaped rod (18) is arranged in a spherical shape, and the spherical end of the arc-shaped rod (18) is arranged close to the exterior of the arc-shaped plate (17).

9. The integrated coalbed methane purification device according to claim 8, characterized in that: There are two groups of the limiting frames (14), and the two groups of the limiting frames (14) are respectively arranged at the front and rear ends of the hollow plate (15).

10. The integrated coalbed methane purification device according to claim 9, characterized in that: The primary filter box (2) is provided with a multi-layer gradient filter screen inside, the multi-layer gradient filter screen comprising a metal filter screen layer, a fiber filter cloth layer and a ceramic particle layer, and the aperture of the multi-layer gradient filter screen decreases step by step along the airflow direction.

11. The integrated coalbed methane purification device according to claim 10, characterized in that: A drive motor is arranged inside the suction fan (7), and the drive motor is connected to a frequency conversion controller which dynamically adjusts the rotation speed of the suction fan according to real-time air pressure data in the purification box (1).

12. The integrated coal bed gas purification device according to claim 11, characterized in that: The through holes (12) are distributed in a staggered manner on the surface of the splitter plate (11), and the diameter of the through holes gradually increases from the root to the end of the splitter plate.

13. The integrated coal bed gas purification device according to claim 12, characterized in that: The elastic element is a butterfly spring, and the stiffness coefficient of the butterfly spring matches the rotation frequency of the arc rod (18).

14. The integrated coal bed gas purification device according to claim 13, characterized in that: An openable sealing cover is provided on the top of the purification box (1), an annular sealing ring is embedded inside the sealing cover, and the edge of the sealing cover is connected to the purification box (1) via a quick-release buckle.

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