Boiler oil shale combustion tail gas purification pretreatment device

Abstract

The utility model discloses a boiler oil shale combustion tail gas purification pretreatment device which comprises an outer shell, a liquid storage box is installed at the bottom of the outer shell, backflow pipes extending into the liquid storage box at equal intervals are fixed to the bottom of the outer shell, and spraying assemblies are arranged on one side of the liquid storage box and in the outer shell. An adsorption cylinder is mounted at the top of the shell, second air guide pipes extending into the shell at equal intervals are fixed to the bottom of the adsorption cylinder, and an exhaust pipe is fixed to the top of the adsorption cylinder; a filter cartridge is mounted in the middle of the inner wall of the shell, and a waste discharge pipe extending out of the liquid storage tank is fixed to the bottom of the filter cartridge; according to the boiler oil shale combustion tail gas purification pretreatment device, large-particle impurities in tail gas are effectively intercepted through the umbrella-shaped filter screen, and meanwhile the umbrella-shaped filter screen is unfolded and folded, so that the impurities are shaken off, the blockage problem is prevented, the filtering efficiency is guaranteed, the service life of the filter screen is prolonged, a pretreatment mode combining filtering, spraying and adsorption is formed, and the purification effect is good. The adsorption effect is fully ensured.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, specifically a pretreatment device for purifying exhaust gas from boiler oil shale combustion. Background Technology

[0002] Oil shale, formed from the sedimentary deposits of mud created by the decay of aquatic plants and algae, is a rich mineral resource. It can be used to generate electricity, directly as boiler fuel to produce steam for power generation. However, the combustion of oil shale produces significant amounts of exhaust gas containing harmful substances such as particulate matter, sulfur dioxide, nitrogen oxides, and organic pollutants. Direct emission of this gas would cause severe environmental pollution and harm human health. Therefore, effective pretreatment before deep purification of the exhaust gas is crucial, as it reduces the load on subsequent purification equipment and improves overall purification efficiency.

[0003] Currently, existing pretreatment devices for boiler oil shale combustion exhaust gas generally employ filtration, spraying, and adsorption methods. When passing through the filtration structure, particulate matter in the exhaust gas adheres to the bottom of the filter screen. If not treated in time, this can affect gas flow and reduce filtration efficiency. Therefore, there is an urgent need to design a boiler oil shale combustion exhaust gas purification and pretreatment device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a pretreatment device for the purification of boiler oil shale combustion exhaust gas, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a boiler oil shale combustion tail gas purification and pretreatment device, including an outer shell, a liquid storage tank installed at the bottom of the outer shell, and a return pipe extending at equal distances into the liquid storage tank fixed at the bottom of the outer shell, and a spray assembly provided on one side of the liquid storage tank and inside the outer shell.

[0006] An adsorption cylinder is installed on the top of the outer shell, and a second air guide pipe extending into the outer shell at equal distances is fixed at the bottom of the adsorption cylinder. An exhaust pipe is fixed on the top of the adsorption cylinder.

[0007] A filter cylinder is installed in the middle of the inner wall of the outer shell, and a waste discharge pipe extending out of the liquid storage tank is fixed at the bottom of the filter cylinder. A tail gas inlet pipe extending to the outer shell is fixed on one side of the filter cylinder, and a first air guide pipe evenly distributed at the top of the filter cylinder is fixed. A fixing ring is fixed on the inner wall of the filter cylinder, and an umbrella-shaped filter screen is installed on the inner wall of the fixing ring. An actuating component is installed at the middle position of the umbrella-shaped filter screen and the top of the filter cylinder.

[0008] By adopting the above technical solution, the problem of clogging of the umbrella-shaped filter can be prevented.

[0009] The present invention is further configured such that a fixed cover is installed on the top of the filter cylinder, and the actuating component includes mounting holes opened at the middle of the top of the fixed cover and the middle of the top of the filter cylinder. A central shaft is rotatably connected to the inner wall of the mounting hole. A forward and reverse drive for driving the central shaft to rotate is fixedly installed on the top of the filter cylinder. A lifting tube sleeved outside the central shaft is installed in the middle of the umbrella-shaped filter screen, and a threaded groove is opened in the middle of the inner wall of the lifting tube. A threaded post screwed into the threaded groove is fixed on the outer wall of the central shaft. Guide holes are evenly distributed on the top of the filter cylinder, and a guide rod passing through the guide holes is fixed on the top of the outer wall of the lifting tube.

[0010] By adopting the above technical solution, the umbrella-shaped filter can be unfolded and pleated, thereby shaking off impurities.

[0011] The present invention is further configured such that the outer wall of the fixed cover is provided with heat dissipation vents distributed at equal intervals, and the inner wall of each heat dissipation vent is provided with heat dissipation fins.

[0012] By adopting the above technical solution, the heat generated during the operation of the forward and reverse drive can be effectively dissipated, avoiding the impact of excessive temperature on the drive's performance and service life.

[0013] The present invention is further configured such that a connecting plate is fixed to the bottom of the central shaft, and a plurality of cleaning scrapers are fixed to the outer wall of the connecting plate, with the side walls of the cleaning scrapers adhering to the bottom of the fixing ring and the inner wall of the filter cylinder.

[0014] By adopting the above technical solution, impurities are prevented from accumulating on the inner wall of the filter cartridge.

[0015] The present invention is further configured such that the spray assembly includes a pump installed on one side of the liquid storage tank, and a filter cover inserted into the liquid storage tank is installed at the inlet end of the pump. A first water guide cover is installed at the middle of the top inner wall of the filter cylinder, and a connecting pipe is installed on one side of the first water guide cover and the outlet end of the pump. A second water guide cover is rotatably connected to the bottom of the inner wall of the first water guide cover through a sealed bearing. An L-shaped connecting pipe is fixed at equal intervals at the bottom of the second water guide cover. One end of the L-shaped connecting pipe is fixed with the same annular pipe. Spray nozzles are installed at equal intervals at the bottom of the annular pipe. The position of the spray nozzles corresponds to the gap between the inner wall of the outer shell and the outer wall of the filter cylinder. The top of the central shaft is fixedly connected to the bottom of the second water guide cover.

[0016] By adopting the above technical solution, an all-round spraying operation is formed, which effectively removes some harmful substances and fine particles from the exhaust gas and improves the exhaust gas purification effect.

[0017] The present invention is further configured such that an injection pipe and a drain pipe are fixed on the top and bottom of one side of the liquid storage tank, respectively, and valves are installed at one end of the injection pipe, one end of the drain pipe and the bottom of the waste discharge pipe.

[0018] By adopting the above technical solution, it is convenient to add purification liquid, discharge waste liquid, and clean impurities in the filter cartridge.

[0019] The present invention is further configured such that a liquid level window is provided on one side of the liquid storage tank, and multiple support legs are installed at the bottom of the liquid storage tank.

[0020] By adopting the above technical solution, it is convenient to add purification liquid in a timely manner.

[0021] The present invention is further configured such that the adsorption cylinder is provided with activated carbon adsorption packing inside, and a material exchange port is provided on one side of the adsorption cylinder, and an openable cover is provided on one side of the material exchange port.

[0022] By adopting the above technical solution, the exhaust gas is further adsorbed to remove odors and some harmful substances that are difficult to remove by spraying.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This boiler oil shale combustion exhaust gas purification pretreatment device effectively intercepts large particulate impurities in the exhaust gas through an umbrella-shaped filter screen installed inside the filter cylinder. Simultaneously, under the action of the actuating component, the lifting pipe moves up and down driven by the threaded column. When impurities in the exhaust gas accumulate on the umbrella-shaped filter screen, the rising and falling of the lifting pipe causes the umbrella-shaped filter screen to unfold and fold, thereby shaking off the impurities, preventing filter screen blockage, ensuring filtration efficiency, and extending the filter screen's service life. Furthermore, when the central shaft rotates, a cleaning scraper cleans the bottom of the fixing ring and the inner wall of the filter cylinder, scraping off attached impurities, further preventing impurity accumulation from affecting the normal operation of the device and ensuring a continuous and stable filtration process.

[0025] 2. This boiler oil shale combustion exhaust gas purification pretreatment device, through its spray assembly, can extract the purification liquid from the storage tank, pass through the connecting pipe, the first water guide hood, the second water guide hood, the L-shaped connecting pipe, and the annular pipe, and finally be sprayed out by the nozzle. This sprays the exhaust gas passing through the gaps in the inner wall of the outer shell and the outer wall of the filter cartridge, effectively removing some harmful substances and fine particles from the exhaust gas, improving the exhaust gas purification effect. As the central shaft rotates, it drives the second water guide hood, the annular pipe, and the nozzle to rotate, expanding the spray range, increasing the contact area between the purification liquid and the exhaust gas, and further improving the exhaust gas purification efficiency.

[0026] 3. The boiler oil shale combustion exhaust gas purification pretreatment device uses activated carbon adsorption packing in the adsorption cylinder to adsorb odors and harmful impurities in the exhaust gas, forming a pretreatment method that combines filtration, spraying and adsorption, which fully ensures the adsorption effect and reduces maintenance costs and difficulty. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present utility model;

[0028] Figure 2 This is a three-dimensional sectional view of the present invention;

[0029] Figure 3 This is a schematic diagram of the filter cartridge and spray assembly of this utility model;

[0030] Figure 4 for Figure 3 Front sectional view;

[0031] Figure 5 This is a schematic diagram of the lifting pipe and threaded groove structure of this utility model;

[0032] Figure 6 This is a schematic diagram of the cleaning scraper and connecting plate structure of this utility model.

[0033] In the diagram: 1. Outer shell; 2. Exhaust gas inlet pipe; 3. Liquid storage tank; 4. Liquid level window; 5. Spray assembly; 501. Liquid pump; 502. Filter cover; 503. Annular pipe; 504. Connecting pipe; 505. First water guide cover; 506. Second water guide cover; 507. Spray head; 508. L-shaped connecting pipe; 6. Adsorption cylinder; 7. Exhaust pipe; 8. Material changing port; 9. Filter cylinder; 10. Fixing ring; 11. Liquid injection pipe; 12. Liquid drain pipe ; 13. Waste discharge pipe; 14. Return pipe; 15. Actuating assembly; 1501. Central shaft; 1502. Forward and reverse drive; 1503. Threaded column; 1504. Rising pipe; 1505. Threaded groove; 1506. Guide rod; 16. Umbrella-shaped filter screen; 17. First air guide pipe; 18. Fixing cover; 19. Activated carbon adsorption packing; 20. Heat dissipation fins; 21. Cleaning scraper; 22. Connecting plate; 23. Second air guide pipe. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-6This utility model provides a technical solution: a boiler oil shale combustion exhaust gas purification and pretreatment device, including a shell 1, a liquid storage tank 3 installed at the bottom of the shell 1, and a return pipe 14 extending at equal distances into the liquid storage tank 3 fixed at the bottom of the shell 1, and a spray assembly 5 provided on one side of the liquid storage tank 3 and inside the shell 1.

[0036] An adsorption cylinder 6 is installed on the top of the outer shell 1, and a second air guide pipe 23 extending at equal distances into the outer shell 1 is fixed at the bottom of the adsorption cylinder 6. An exhaust pipe 7 is fixed on the top of the adsorption cylinder 6.

[0037] A filter cylinder 9 is installed in the middle of the inner wall of the outer casing 1. A waste discharge pipe 13 extending from the liquid storage tank 3 is fixed to the bottom of the filter cylinder 9. A tail gas inlet pipe 2 extending to the outer casing 1 is fixed to one side of the filter cylinder 9. A first air guide pipe 17 with equal spacing is fixed to the top of the filter cylinder 9. A fixing ring 10 is fixed to the inner wall of the filter cylinder 9, and an umbrella-shaped filter screen 16 is installed on the inner wall of the fixing ring 10. An actuating component 15 is installed at the middle of the umbrella-shaped filter screen 16 and the top of the filter cylinder 9. A fixing cover 18 is installed on the top of the filter cylinder 9. The outer wall of the fixing cover 18 has evenly distributed heat dissipation vents, and heat dissipation fins 20 are installed on the inner wall of each heat dissipation vent. The actuating component 15 includes mounting holes at the middle of the top of the fixing cover 18 and the middle of the top of the filter cylinder 9. A central shaft 1501 is rotatably connected to the inner wall of the mounting hole. The top of the filter cylinder 9... The filter cylinder 9 is equipped with a forward and reverse drive 1502 for rotating the central shaft 1501. A lifting tube 1504 is installed in the middle of the umbrella-shaped filter 16 and is sleeved on the outside of the central shaft 1501. A threaded groove 1505 is opened in the middle of the inner wall of the lifting tube 1504. A threaded post 1503 is fixed on the outer wall of the central shaft 1501 and screwed to the threaded groove 1505. The top of the filter cylinder 9 is provided with guide holes that are evenly distributed. A guide rod 1506 passing through the guide holes is fixed on the top of the outer wall of the lifting tube 1504. The umbrella-shaped filter 16 can effectively intercept large particulate impurities in the exhaust gas. At the same time, under the action of the actuating component 15, the lifting tube 1504 can move up and down under the drive of the threaded post 1503, which can make the umbrella-shaped filter 16 unfold and fold, thereby shaking off impurities and preventing the umbrella-shaped filter 16 from becoming clogged.

[0038] To prevent impurities from accumulating on the inner wall of filter cartridge 9, refer to... Figure 2 , Figure 4 and Figure 6 A connecting plate 22 is fixed to the bottom of the central shaft 1501, and multiple cleaning scrapers 21 are fixed to the outer wall of the connecting plate 22. The side walls of the cleaning scrapers 21 are attached to the bottom of the fixing ring 10 and the inner wall of the filter cylinder 9. When the central shaft 1501 rotates, it can drive the cleaning scrapers 21 to rotate synchronously, thereby scraping and cleaning the bottom of the fixing ring 10 and the inner wall of the filter cylinder 9 to prevent impurities from adhering and accumulating.

[0039] To achieve a comprehensive spray purification effect, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The spray assembly 5 includes a pump 501 installed on one side of the storage tank 3, and a filter cover 502 inserted into the storage tank 3 is installed at the inlet end of the pump 501. A first water guide cover 505 is installed in the middle of the top inner wall of the filter cylinder 9, and a connecting pipe 504 is installed between one side of the first water guide cover 505 and the outlet end of the pump 501. A second water guide cover 506 is rotatably connected to the bottom of the inner wall of the first water guide cover 505 through a sealed bearing, and L-shaped connecting pipes 508 are fixed at equal intervals at the bottom of the second water guide cover 506. One end of each L-shaped connecting pipe 508 is fixed to the same annular pipe 503, and the bottom of the annular pipe 503 is installed with equal intervals. The nozzles 507 are distributed and their positions correspond to the gaps between the inner wall of the outer casing 1 and the outer wall of the filter cartridge 9. The top of the central shaft 1501 is fixedly connected to the bottom of the second water guide cover 506. The purification liquid in the storage tank 3 is drawn out through the spray assembly 5, passes through the connecting pipe 504, the first water guide cover 505, the second water guide cover 506, the L-shaped connecting pipe 508, and the annular pipe 503, and is finally sprayed out by the nozzles 507. As the central shaft 1501 rotates, it drives the second water guide cover 506, the annular pipe 503, and the nozzles 507 to rotate, thereby expanding the spray range and increasing the contact area between the purification liquid and the exhaust gas, so as to carry out all-round spray purification treatment.

[0040] To ensure timely replenishment of the purification solution, refer to... Figure 1 and Figure 2 The top and bottom of one side of the liquid storage tank 3 are respectively fixed with an injection pipe 11 and a drain pipe 12. Valves are installed at one end of the injection pipe 11, one end of the drain pipe 12 and the bottom of the waste pipe 13. A liquid level window 4 is provided on one side of the liquid storage tank 3, and multiple support legs are installed at the bottom of the liquid storage tank 3. The liquid level of the purified liquid in the liquid storage tank 3 can be observed through the liquid level window 4. When the liquid level is low, purified liquid is added to the liquid storage tank 3 through the injection pipe 11.

[0041] To remove odors and harmful impurities from exhaust gases, refer to... Figure 1 and Figure 2 The adsorption cylinder 6 is equipped with activated carbon adsorption packing 19 inside, and a material exchange port 8 is provided on one side of the adsorption cylinder 6. A cover is provided on one side of the material exchange port 8. The activated carbon adsorption packing 19 inside the adsorption cylinder 6 will further adsorb the exhaust gas to remove odors and some harmful substances that are difficult to remove by spraying.

[0042] In summary, the working principle of this utility model is as follows: the exhaust gas generated from the combustion of boiler oil shale enters the filter cylinder 9 through the exhaust gas inlet pipe 2. The umbrella-shaped filter screen 16 inside the filter cylinder 9 performs preliminary filtration of the exhaust gas, intercepting large particulate impurities. Under the action of gravity, the impurities slide down along the umbrella-shaped filter screen 16 to the bottom of the filter cylinder 9 and are finally discharged through the waste discharge pipe 13. At the same time, the forward and reverse drive 1502 is started to drive the central shaft 1501 and the threaded column 1503 to rotate. Due to the threaded column 1503 The lifting tube 1504 is screwed into the threaded groove 1505 on the inner wall of the lifting tube 1504, and the lifting tube 1504 is engaged with the guide hole at the top of the filter cylinder 9 through the guide rod 1506. Therefore, when the central shaft 1501 rotates, the lifting tube 1504 will move up and down at the same time, which can drive the umbrella-shaped filter screen 16 to deform, shake off the impurities accumulated on the umbrella-shaped filter screen 16, prevent the filter screen from clogging, and the cleaning scraper 21 will rotate synchronously with the central shaft 1501 to clean the bottom of the fixing ring 10 and the inner wall of the filter cylinder 9, and scrape off the attached impurities.

[0043] Next, the filtered exhaust gas enters the gap between the outer shell 1 and the filter cylinder 9 along the first air guide pipe 17. At this time, the liquid pump 501 is started, and the purification liquid is drawn from the storage tank 3 through the filter cover 502. The purification liquid enters the first water guide cover 505 through the connecting pipe 504, then enters the second water guide cover 506, enters the annular pipe 503 through the L-shaped connecting pipe 508, and finally is sprayed out by the nozzle 507. Since the top of the central shaft 1501 is fixedly connected to the bottom of the second water guide cover 506, when the central shaft 1501 rotates, it will drive the second water guide cover 506, the L-shaped connecting pipe 508, the annular pipe 503 and the nozzle 507 to rotate, thereby spraying and purifying the exhaust gas passing through the gap between the outer shell 1 and the filter cylinder 9 in all directions, removing some harmful substances and fine particles from the exhaust gas. The sprayed liquid, carrying impurities, flows back to the storage tank 3 through the return pipe 14.

[0044] After filtration and spray purification, the exhaust gas will enter the adsorption cylinder 6 through the second air guide pipe 23. The activated carbon adsorption packing 19 in the adsorption cylinder 6 will further adsorb the exhaust gas, remove the odor and some harmful substances that are difficult to remove by spraying, and finally discharge it through the exhaust pipe 7.

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

Claims

1. A boiler oil shale combustion exhaust gas purification and pretreatment device, comprising a shell (1), characterized in that, A liquid storage tank (3) is installed at the bottom of the outer shell (1), and a return pipe (14) extending at equal distances into the liquid storage tank (3) is fixed at the bottom of the outer shell (1). A spray assembly (5) is provided on one side of the liquid storage tank (3) and inside the outer shell (1). An adsorption cylinder (6) is installed on the top of the outer shell (1), and a second air guide pipe (23) extending at equal distances into the outer shell (1) is fixed at the bottom of the adsorption cylinder (6), and an exhaust pipe (7) is fixed on the top of the adsorption cylinder (6). A filter cylinder (9) is installed in the middle of the inner wall of the outer shell (1), and a waste pipe (13) extending out of the liquid storage tank (3) is fixed at the bottom of the filter cylinder (9). A tail gas inlet pipe (2) extending to the outer shell (1) is fixed on one side of the filter cylinder (9), and a first air guide pipe (17) evenly distributed is fixed at the top of the filter cylinder (9). A fixing ring (10) is fixed on the inner wall of the filter cylinder (9), and an umbrella-shaped filter screen (16) is installed on the inner wall of the fixing ring (10). An actuating component (15) is installed at the middle position of the umbrella-shaped filter screen (16) and the top of the filter cylinder (9).

2. The boiler oil shale combustion exhaust gas purification and pretreatment device according to claim 1, characterized in that, The top of the filter cylinder (9) is fitted with a fixed cover (18), and the actuating assembly (15) includes mounting holes at the middle of the top of the fixed cover (18) and at the middle of the top of the filter cylinder (9). The inner wall of the mounting hole is rotatably connected to a central shaft (1501). The top of the filter cylinder (9) is fixedly fitted with a forward and reverse drive (1502) for driving the central shaft (1501) to rotate. The middle of the umbrella-shaped filter screen (16) is fitted with a lifting tube (1504) sleeved outside the central shaft (1501), and the middle of the inner wall of the lifting tube (1504) is provided with a threaded groove (1505). The outer wall of the central shaft (1501) is fixed with a threaded post (1503) screwed to the threaded groove (1505). The top of the filter cylinder (9) is provided with guide holes distributed at equal intervals, and the top of the outer wall of the lifting tube (1504) is fixed with a guide rod (1506) passing through the guide holes.

3. The boiler oil shale combustion exhaust gas purification and pretreatment device according to claim 2, characterized in that, The outer wall of the fixed cover (18) is provided with heat dissipation vents that are evenly distributed, and the inner wall of each heat dissipation vent is provided with heat dissipation fins (20).

4. The boiler oil shale combustion tail gas purification and pretreatment device according to claim 2, characterized in that, The bottom of the central shaft (1501) is fixed with a connecting plate (22), and a plurality of cleaning scrapers (21) are fixed on the outer wall of the connecting plate (22). The side walls of the cleaning scrapers (21) are attached to the bottom of the fixing ring (10) and the inner wall of the filter cylinder (9).

5. The boiler oil shale combustion tail gas purification and pretreatment device according to claim 2, characterized in that, The spray assembly (5) includes a pump (501) installed on one side of the storage tank (3), and a filter cover (502) inserted into the storage tank (3) is installed at the inlet end of the pump (501). A first water guide cover (505) is installed in the middle of the top inner wall of the filter cylinder (9), and a connecting pipe (504) is installed between one side of the first water guide cover (505) and the outlet end of the pump (501). The bottom of the inner wall of the first water guide cover (505) is rotatably connected to a first water guide cover (504) through a sealed bearing. Two water guide covers (506) are provided, and L-shaped connecting pipes (508) are fixed at equal intervals at the bottom of the second water guide cover (506). One end of the L-shaped connecting pipe (508) is fixed with the same annular pipe (503). Spray nozzles (507) are installed at equal intervals at the bottom of the annular pipe (503). The position of the spray nozzles (507) corresponds to the gap between the inner wall of the outer shell (1) and the outer wall of the filter cylinder (9). The top of the central shaft (1501) is fixedly connected to the bottom of the second water guide cover (506).

6. The boiler oil shale combustion tail gas purification and pretreatment device according to claim 1, characterized in that, The top and bottom of one side of the liquid storage tank (3) are respectively fixed with an injection pipe (11) and a drain pipe (12), and valves are installed at one end of the injection pipe (11), one end of the drain pipe (12) and the bottom of the waste pipe (13).

7. The boiler oil shale combustion exhaust gas purification and pretreatment device according to claim 1, characterized in that, The liquid storage tank (3) has a liquid level window (4) on one side and multiple support legs installed at the bottom of the liquid storage tank (3).

8. The boiler oil shale combustion exhaust gas purification and pretreatment device according to claim 1, characterized in that, The adsorption cylinder (6) is provided with activated carbon adsorption packing (19) inside, and a material exchange port (8) is provided on one side of the adsorption cylinder (6), and an opening and closing cover is provided on one side of the material exchange port (8).

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