A gas collection device

Abstract

The application provides a gas collecting device and relates to the technical field of air pollution, which comprises a box body, a door plate is installed at the front end of the box body through bolts, and a fixing piece is installed in the box body, characterized in that the fixing piece comprises a motor base, a shaft joint base, a movable block, a clamping ring and a gas storage tank, the motor base and the shaft joint base are both installed in the box body through bolts; the rotation of a first motor is controlled to rotate a first threaded rod, at this time, the movable block moves on the first threaded rod to adjust the height of the clamping ring, the gas storage tank is fixed through the clamping ring, and the gas storage tank is convenient to assemble and disassemble; the rotation of a second motor is controlled to rotate a lead screw to adjust the height of a supporting rod, so that the height of a gas conveying piece can be controlled, and different height pollution gases can be collected conveniently; the height of a partition plate is lowered by controlling the rotation of the second motor, so that the gas conveying piece is hidden in the box body, and the gas conveying piece is prevented from being damaged by collision; the setting of a groove wheel can prevent the hose from being damaged due to folding.

Description

Technical Field

[0001] This invention relates to the field of air pollution technology, and in particular to a gas collection device. Background Technology

[0002] Air pollution is composed of harmful substances such as sulfur dioxide or particulate matter. In order to detect the amount of pollutants or impurities in the polluted gas, it is necessary to use a gas collection device to collect the polluted gas. Therefore, a gas collection device is required.

[0003] Current gas collection devices typically use a vacuum pump to extract gas and fill it into a storage tank. The vacuum pump is fixed in place, its height cannot be adjusted, and it lacks a protective mechanism, making it inconvenient to use. Summary of the Invention

[0004] In view of this, the present invention provides a gas collection device to solve the problems of existing gas collection devices having fixed pump installations, no height adjustment, and lack of protective mechanisms, making them inconvenient to use.

[0005] This invention provides a gas collection device, specifically comprising: a housing; four sets of casters are installed at the lower end of the housing, and a top plate is installed at the upper end of the housing via hinges; a door panel is installed at the front end of the housing via bolts; a fixing component is installed inside the housing, including a motor base, a shaft connector, a movable block, a clamping ring, and a gas storage tank; the motor base and the shaft connector are both bolted inside the housing, with the shaft connector located directly above the motor base; a threaded rod is axially connected between the shaft connector and the motor base; a motor is bolted to the lower end of the motor base; the rotation of the motor... The shaft is connected to the lower end of the No. 1 threaded rod. A connecting rod is installed between the motor base and the shaft connector. The movable block has a threaded hole. The movable block is threadedly engaged with the No. 1 threaded rod. Two sets of bearings are installed at the rear end of the movable block. The connecting rod is located between the two sets of bearings. The bearings are in contact with the side of the connecting rod. The clamping ring is installed at the front end of the movable block by bolts. Three sets of cylinders are fixed on the clamping ring. Shaft connectors are installed inside the cylinders. Rollers are connected to the shaft connectors. An adjusting rod is threaded into the cylinder. The adjusting rod rests on the shaft connectors. The gas tank is clamped between the three sets of rollers.

[0006] Furthermore, a base frame is fixed inside the housing, and four sets of support columns are fixed on the base frame. The upper ends of the two sets of support columns near the left and right sides of the base frame are equipped with No. 1 plates, and the upper ends of the two sets of support columns near the rear of the base frame are equipped with No. 2 plates. Two sets of lead screws are respectively axially connected between the two sets of No. 1 plates and the base frame. Two sets of worm gear boxes are bolted to the upper ends of the No. 1 plates. A worm is installed between the two sets of worm gear boxes. The upper end of the lead screw is connected to the worm wheel in the worm gear box, and the worm meshes with the worm wheel in the worm gear box.

[0007] Furthermore, bevel gearboxes are installed on the rear side of the two sets of first plates, and a crossbar is installed between the two sets of bevel gearboxes. The rear ends of the two sets of worm gears are respectively installed in the two sets of bevel gearboxes. A gearbox is installed on the second plate by bolts, and the crossbar is installed in the gearbox. A second motor is installed on the upper end of the gearbox by bolts, and the rotating shaft of the second motor is connected to the gear in the gearbox.

[0008] Furthermore, a support rod is installed on the lead screw, and the support rod is threadedly engaged with the lead screw. Mounting plates are fixed to the front and rear ends of the support rod. A first roller is shafted onto the mounting plate, and a shaft connecting block is installed on the mounting plate. The shaft connecting block has a waist-shaped groove, and a bolt is installed in the waist-shaped groove. The bolt is threaded onto the mounting plate. A second roller is shafted onto the shaft connecting block. Two sets of adjusting bolts are threaded onto the mounting plate. The adjusting bolts are in contact with the shaft connecting block. The support column is located between the first roller and the second roller.

[0009] Furthermore, a partition is installed between the two sets of support rods. The partition has a through groove, and a mounting bracket is fixed on the through groove. Two sets of No. 2 threaded rods are spun to the lower end of the mounting bracket. The mounting bracket has a sliding groove, a nut is installed on the No. 2 threaded rod, a shaft connection bracket is installed on the nut, and a grooved wheel is spun to the shaft connection bracket.

[0010] Furthermore, an air supply component is installed on the partition plate. The air supply component includes a fixed base, a power mechanism, a filter mechanism, and a hose. The fixed base is bolted to the partition plate. Two sets of clamping arms are axially connected to the fixed base. A clamping plate is installed at the upper end of the clamping arms. A hydraulic rod is installed on the fixed base. A support plate is installed at the upper end of the hydraulic rod. The support plate has an inclined groove. The lower end of the clamping arms is movably installed in the inclined groove on the support plate. An air suction cylinder is installed between the two sets of clamping plates. An air suction nozzle is bolted to the air suction cylinder. The power mechanism is connected to the air suction cylinder. The filter mechanism is connected to the power mechanism. The hose is connected between the filter mechanism and the air storage tank.

[0011] Furthermore, the power mechanism includes a cylindrical shell, a connecting cover, a fixed plate, a No. 3 motor, and a cover. The connecting cover is installed on the cylindrical shell, the fixed plate is fixed inside the cylindrical shell, the No. 3 motor is installed on the fixed plate by screws, a fan blade is installed on the rotating shaft of the No. 3 motor, and the cover is installed on the No. 3 motor.

[0012] Furthermore, the filtration mechanism includes an mounting cylinder, a cylinder base, an inner rod, a filter disc, and a shaft connecting cylinder. The cylinder base is mounted on the mounting cylinder by screws, the inner rod is shaft-connected inside the mounting cylinder, the filter disc is fixed on the inner rod, and the shaft connecting cylinder is connected to the cylinder base.

[0013] Furthermore, the shaft connecting cylinder is provided with a protruding post, and the cylinder seat is provided with a locking groove. The protruding post is installed in the locking groove, and a baffle is shaft-connected inside the shaft connecting cylinder. The diameter of the front end of the shaft connecting cylinder is smaller than the diameter of the baffle.

[0014] The gas collection device provided by this invention has the following beneficial effects:

[0015] 1. The gas collection device provided by the present invention, when in use, controls the rotation of the first motor to rotate the first threaded rod. At this time, the movable block moves on the first threaded rod to adjust the height of the clamping ring. The clamping ring fixes the gas storage tank, which is convenient for assembly and disassembly. Furthermore, controlling the rotation of the second motor can rotate the lead screw to adjust the height of the support rod, thereby controlling the height of the gas conveying component and facilitating the collection of polluted gas at different heights.

[0016] 2. The gas collection device provided by this invention, when not in use, lowers the height of the partition by controlling the rotation of the second motor, so that the gas delivery component is hidden inside the housing to prevent the gas delivery component from being damaged by collision. In addition, this invention is provided with a power mechanism, which can rotate the fan blades by controlling the rotation of the third motor, thereby generating suction and extracting polluted gas. The grooved wheel can protect the hose and prevent the hose from being damaged by folding. Furthermore, rotating the nut can adjust the position of the shaft bracket to facilitate the support of the hose. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the overall front structure of the gas collection device of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the fixing component of the gas collection device of the present invention;

[0022] Figure 3 The gas collection device of the present invention Figure 2 A magnified structural diagram of part A in the middle;

[0023] Figure 4 This is a schematic diagram of the base frame of the gas collection device of the present invention;

[0024] Figure 5 The gas collection device of the present invention Figure 4 A magnified structural diagram of part B in the middle section;

[0025] Figure 6 This is a schematic diagram of the mounting frame of the gas collection device of the present invention;

[0026] Figure 7This is a schematic diagram of the gas delivery component of the gas collection device of the present invention;

[0027] Figure 8 This is a schematic diagram of the power mechanism of the gas collection device of the present invention;

[0028] Figure 9 This is a schematic diagram of the filter mechanism of the gas collection device of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the shaft-connected cylinder of the gas collection device of the present invention;

[0030] Attached reference numerals: 1. Housing; 11. Casters; 12. Top plate; 13. Door panel; 2. Fixing component; 21. Motor base; 211. Threaded rod No. 1; 212. Motor No. 1; 213. Connecting rod; 22. Shaft connector; 23. Movable block; 231. Bearing; 24. Clamping ring; 241. Cylinder; 242. Shaft connector column; 243. Roller; 244. Adjusting rod; 25. Gas tank; 3. Base frame; 31. Support column; 311. Plate No. 1; 312. Plate No. 2; 313. Lead screw; 314. Worm gear; 315. Worm gearbox; 316. Crossbar; 317. Bevel gearbox; 318. Gearbox; 319. Motor No. 2; 32. Support rod; 321. Mounting plate; 322. 1. Shaft connecting block; 323. No. 2 roller; 324. No. 1 roller; 33. Partition plate; 34. Mounting bracket; 341. No. 2 threaded rod; 342. Nut; 343. Shaft connecting frame; 344. Grooved wheel; 4. Air conveying component; 41. Fixed seat; 411. Clamping arm; 412. Clamping plate; 413. Hydraulic rod; 414. Support plate; 415. Air suction cylinder; 416. Air suction nozzle; 42. Power mechanism; 421. Cylinder shell; 422. Connecting cover; 423. Fixed plate; 424. No. 3 motor; 425. Cover cylinder; 43. Filtering mechanism; 431. Mounting cylinder; 432. Cylinder seat; 433. Inner rod; 434. Filter disc; 435. Shaft connecting cylinder; 4351. Baffle plate; 44. Hose. Detailed Implementation

[0031] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0032] Please refer to Figures 1 to 10 As shown:

[0033] Example 1: The gas collection device provided by the present invention includes a housing 1; four sets of casters 11 are installed at the lower end of the housing 1, and a top plate 12 is installed at the upper end of the housing 1 via hinges. A door panel 13 is installed at the front end of the housing 1 via bolts. A fixing component 2 is installed inside the housing 1. The fixing component 2 includes a motor base 21, a shaft connector 22, a movable block 23, a clamping ring 24, and a gas storage tank 25. The motor base 21 and the shaft connector 22 are both installed inside the housing 1 via bolts, and the shaft connector 22 is located directly above the motor base 21. A threaded rod 211 is axially connected between the shaft connector 22 and the motor base 21. A motor 212 is installed at the lower end of the motor base 21 via bolts. The rotating shaft of the motor 212 is connected to the lower end of the threaded rod 211. A connecting rod 213 is installed between the motor base 21 and the shaft connector 22. The movable block 23 has a threaded hole and is threaded with the first threaded rod 211. Two sets of bearings 231 are installed at the rear end of the movable block 23. The connecting rod 213 is located between the two sets of bearings 231 and the side of the bearings 231 contacts the side of the connecting rod 213. The clamping ring 24 is installed at the front end of the movable block 23 by bolts. Three sets of cylinders 241 are fixed on the clamping ring 24. Shaft connectors 242 are installed inside the cylinders 241. Rollers 243 are shafted on the shaft connectors 242. An adjusting rod 244 is threaded into the cylinders 241 and rests on the shaft connectors 242. The gas tank 25 is clamped between the three sets of rollers 243.

[0034] The housing 1 contains a base frame 3, on which four sets of support columns 31 are fixed. Two sets of support columns 31 near the left and right sides of the base frame 3 have a first plate 311 mounted on their upper ends. Two sets of support columns 31 near the rear of the base frame 3 have a second plate 312 mounted on their upper ends. Two sets of lead screws 313 are axially connected to the base frame 3 from the two sets of first plates 311. Two sets of worm gear boxes 315 are bolted to the upper ends of the first plates 311. A worm 314 is installed between the two sets of worm gear boxes 315. The upper end of the lead screw 313 connects to the worm wheel inside the worm gear box 315, and the worm 314 meshes with the worm wheel inside the worm gear box 315. A bevel gear box 317 is mounted on the rear side of the two sets of first plates 311. A crossbar 316 is installed between 317. The rear ends of two sets of worm gears 314 are respectively installed in two sets of bevel gearboxes 317. A gearbox 318 is bolted onto the second plate 312. The crossbar 316 is installed in the gearbox 318, and a second motor 319 is bolted to the upper end of the gearbox 318. The rotating shaft of the second motor 319 is connected to the gear in the gearbox 318. A support rod 32 is installed on the lead screw 313. The support rod 32 is threadedly engaged with the lead screw 313. Its function is to control the rotation of the second motor 319 to rotate the lead screw 313, thereby adjusting the height of the support rod 32, which can control the height of the gas delivery component 4 and facilitate the collection of polluted gas at different heights.

[0035] The support rod 32 has mounting plates 321 fixed at its front and rear ends. A first roller 324 is shaft-connected to the mounting plate 321, and a shaft connecting block 322 is mounted on the mounting plate 321. The shaft connecting block 322 has a waist-shaped groove, and a bolt is installed in the waist-shaped groove. The bolt is threaded onto the mounting plate 321. A second roller 323 is shaft-connected to the shaft connecting block 322. Two sets of adjusting bolts are threaded onto the mounting plate 321. The adjusting bolts are in contact with the shaft connecting block 322. The support column 31 is located between the first roller 324 and the second roller 323. Its function is to make the second roller 323 in close contact with the support column 31 by rotating the adjusting bolt. The arrangement of the first roller 324 and the second roller 323 can make the support rod 32 rise and fall more smoothly.

[0036] A partition 33 is installed between the two sets of support rods 32. The partition 33 has a through groove, and a mounting bracket 34 is fixed on the through groove. Two sets of No. 2 threaded rods 341 are shaft-connected to the lower end of the mounting bracket 34. The mounting bracket 34 has a sliding groove. Nuts 342 are installed on the No. 2 threaded rods 341. A shaft connection bracket 343 is installed on the nut 342. A grooved wheel 344 is shaft-connected to the shaft connection bracket 343. The function of the grooved wheel 344 is to protect the hose 44 and prevent the hose 44 from folding and being damaged. Also, rotating the nut 342 can adjust the position of the shaft connection bracket 343 to facilitate the support of the hose 44.

[0037] The partition 33 is equipped with an air supply component 4, which includes a fixed base 41 and a power mechanism 42. The fixed base 41 is bolted to the partition 33. Two sets of clamping arms 411 are axially connected to the fixed base 41. Clamping plates 412 are installed at the upper ends of the clamping arms 411. A hydraulic rod 413 is installed on the fixed base 41. A support plate 414 is installed at the upper end of the hydraulic rod 413. The support plate 414 has a slanted groove. The lower ends of the clamping arms 411 are movably installed in the slanted groove on the support plate 414. An air suction cylinder 415 is installed between the two sets of clamping plates 412. An air suction nozzle 416 is bolted to the air suction cylinder 415. The power mechanism 42 is connected to the air suction cylinder 415. 42 includes a cylindrical shell 421, a connecting cover 422, a fixing plate 423, a third motor 424, and a cover 425. The connecting cover 422 is installed on the cylindrical shell 421, the fixing plate 423 is fixed inside the cylindrical shell 421, the third motor 424 is installed on the fixing plate 423 by screws, and a fan blade is installed on the rotating shaft of the third motor 424. The cover 425 is installed on the third motor 424. Its function is to control the extension of the hydraulic rod 413 so that the lower ends of the two sets of clamping arms 411 can expand. At this time, the suction cylinder 415 can be fixed by the clamping plate 412. Controlling the rotation of the third motor 424 can make the fan blade rotate, thereby generating suction and extracting polluted gas.

[0038] In Example 2, based on Example 1, a filter mechanism 43 is connected to the power mechanism 42, and a hose 44 is connected between the filter mechanism 43 and the gas storage tank 25. The filter mechanism 43 includes an installation cylinder 431, a cylinder seat 432, an inner rod 433, a filter disc 434, and a shaft connecting cylinder 435. The cylinder seat 432 is installed on the installation cylinder 431 by screws. The inner rod 433 is shaft-connected inside the installation cylinder 431. The filter disc 434 is fixed on the inner rod 433. The shaft connecting cylinder 435 is connected to the cylinder seat 432. Its function is to filter impurities in the gas through the filter disc 434 to prevent the air inlet of the gas storage tank 25 from being blocked.

[0039] In Example 3, based on Examples 1 and 2, a protruding post is provided on the shaft connecting cylinder 435, and a locking groove is provided on the cylinder seat 432. The protruding post is installed in the locking groove, and a baffle 4351 is shaft-connected inside the shaft connecting cylinder 435. The diameter of the front end of the shaft connecting cylinder 435 is smaller than the diameter of the baffle 4351. Its function is: the baffle 4351 can prevent airflow backflow. If airflow backflow occurs, the baffle 4351 can fit tightly against the inside of the shaft connecting cylinder 435 to achieve the sealing of the shaft connecting cylinder 435.

[0040] The specific usage and function of this embodiment: In this invention, during use, controlling the rotation of motor 424 (number three) causes the fan blades to rotate, thereby generating suction and extracting polluted gas. Controlling the rotation of motor 319 causes the lead screw 313 to rotate, adjusting the height of the support rod 32, thus controlling the height of the gas delivery component 4 and facilitating the collection of polluted gas at different heights. Rotating the adjusting bolt ensures tight contact between roller 323 (number two) and support column 31. The arrangement of rollers 324 (number one) and 323 makes the lifting and lowering of the support rod 32 more stable. The grooved wheel 344 enables smooth movement of soft... The hose 44 is protected to prevent it from folding and being damaged. Rotating the nut 342 allows for adjustment of the position of the shaft connector 343, facilitating the support of the hose 44. Controlling the extension of the hydraulic rod 413 allows the lower ends of the two clamping arms 411 to expand. At this time, the suction cylinder 415 can be fixed by the clamping plate 412. The filter disc 434 can filter impurities in the gas to prevent blockage of the air inlet of the gas tank 25. The baffle 4351 prevents airflow backflow. If airflow backflow occurs, the baffle 4351 can fit tightly against the inside of the shaft connector 435 to achieve a seal.

Claims

1. A gas collection device, comprising a housing (1); four sets of casters (11) are installed at the lower end of the housing (1), and a top plate (12) is installed at the upper end of the housing (1) via hinges; a door panel (13) is installed at the front end of the housing (1) via bolts; and a fixing component (2) is installed inside the housing (1), characterized in that, The fixing component (2) includes a motor base (21), a shaft connector (22), a movable block (23), a clamping ring (24), and an air tank (25). The motor base (21) and the shaft connector (22) are both bolted to the inside of the housing (1), and the shaft connector (22) is located directly above the motor base (21). A threaded rod (211) is axially connected between the shaft connector (22) and the motor base (21). A motor (212) is bolted to the lower end of the motor base (21). The rotating shaft of the motor (212) is connected to the lower end of the threaded rod (211). A connecting rod (213) is installed between the motor base (21) and the shaft connector (22). The movable block (23) has a threaded hole. Block (23) is threaded into threaded rod (211). Two sets of bearings (231) are installed at the rear end of movable block (23). Connecting rod (213) is located between the two sets of bearings (231). The bearings (231) are in contact with the side of connecting rod (213). Clamping ring (24) is installed at the front end of movable block (23) by bolts. Three sets of cylinders (241) are fixed on clamping ring (24). Shaft connecting column (242) is installed inside cylinder (241). Roller (243) is shafted on shaft connecting column (242). Adjusting rod (244) is threaded into cylinder (241). Adjusting rod (244) is pressed against shaft connecting column (242). Gas tank (25) is clamped on three sets of rollers (243). Between; the box (1) is also fixed with a base frame (3), and four sets of support columns (31) are fixed on the base frame (3). The upper ends of the two sets of support columns (31) near the left and right sides of the base frame (3) are equipped with No. 1 plates (311), and the upper ends of the two sets of support columns (31) near the rear side of the base frame (3) are equipped with No. 2 plates (312). The two sets of No. 1 plates (311) are respectively connected to the base frame (3) by two sets of lead screws (313). The upper ends of the No. 1 plates (311) are bolted to two sets of worm gear boxes (315). The worm (314) is installed between the two sets of worm gear boxes (315). The upper end of the lead screw (313) is connected to the worm wheel in the worm gear box (315). The worm (314) is connected to the worm gear box. The worm gears in (315) are engaged; bevel gearboxes (317) are installed on the rear side of the two sets of first plates (311), and crossbars (316) are installed between the two sets of bevel gearboxes (317). The rear ends of the two sets of worms (314) are respectively installed in the two sets of bevel gearboxes (317). A gearbox (318) is installed on the second plate (312) by bolts. The crossbars (316) are installed in the gearbox (318), and a second motor (319) is installed on the upper end of the gearbox (318) by bolts. The rotating shaft of the second motor (319) is connected to the gear in the gearbox (318). A support rod (32) is installed on the lead screw (313), and the support rod (32) is threadedly engaged with the lead screw (313).A partition plate (33) is installed between the two sets of support rods (32). A through groove is provided on the partition plate (33), and a mounting bracket (34) is fixed on the through groove. Two sets of No. 2 threaded rods (341) are axially connected to the lower end of the mounting bracket (34). A sliding groove is provided on the mounting bracket (34), and a nut (342) is installed on the No. 2 threaded rod (341). A shaft connection bracket (343) is installed on the nut (342), and a grooved wheel (344) is axially connected to the shaft connection bracket (343). An air supply component (4) is installed on the partition plate (33). The air supply component (4) includes a fixed seat (41) and a power mechanism (42).

2. The gas collection device as described in claim 1, characterized in that: The front and rear ends of the support rod (32) are fixed with mounting plates (321). A first roller (324) is shaft-connected to the mounting plate (321), and a shaft connecting block (322) is installed on the mounting plate (321). The shaft connecting block (322) is provided with a waist-shaped groove, and a bolt is installed in the waist-shaped groove. The bolt is threaded onto the mounting plate (321). A second roller (323) is shaft-connected to the shaft connecting block (322). Two sets of adjusting bolts are threaded onto the mounting plate (321). The adjusting bolts are in contact with the shaft connecting block (322). The support column (31) is located between the first roller (324) and the second roller (323).

3. The gas collection device as described in claim 1, characterized in that: The gas delivery component (4) also includes a filter mechanism (43) and a hose (44). The fixed seat (41) is bolted to a partition plate (33). Two sets of clamping arms (411) are shafted on the fixed seat (41). A clamping plate (412) is installed on the upper end of the clamping arm (411). A hydraulic rod (413) is installed on the fixed seat (41). A support plate (414) is installed on the upper end of the hydraulic rod (413). A sloping groove is provided on the support plate (414). The lower end of the clamping arm (411) is movably installed in the sloping groove on the support plate (414). An air suction cylinder (415) is installed between the two sets of clamping plates (412). An air suction nozzle (416) is bolted to the air suction cylinder (415). A power mechanism (42) is connected to the air suction cylinder (415). A filter mechanism (43) is connected to the power mechanism (42). A hose (44) is connected between the filter mechanism (43) and the gas storage tank (25).

4. The gas collection device as described in claim 3, characterized in that: The power mechanism (42) includes a cylindrical shell (421), a connecting cover (422), a fixing plate (423), a No. 3 motor (424), and a cover (425). The connecting cover (422) is installed on the cylindrical shell (421), the fixing plate (423) is fixed inside the cylindrical shell (421), the No. 3 motor (424) is installed on the fixing plate (423) by screws, the rotating shaft of the No. 3 motor (424) is equipped with fan blades, and the cover (425) is installed on the No. 3 motor (424).

5. The gas collection device as described in claim 3, characterized in that: The filtration mechanism (43) includes a mounting cylinder (431), a cylinder seat (432), an inner rod (433), a filter disc (434), and a shaft connecting cylinder (435). The cylinder seat (432) is mounted on the mounting cylinder (431) by screws. The inner rod (433) is shaft-connected inside the mounting cylinder (431). The filter disc (434) is fixed on the inner rod (433). The shaft connecting cylinder (435) is connected to the cylinder seat (432).

6. The gas collection device as described in claim 5, characterized in that: The shaft connecting cylinder (435) is provided with a protruding post, and the cylinder seat (432) is provided with a locking groove. The protruding post is installed in the locking groove, and a baffle (4351) is shaft-connected inside the shaft connecting cylinder (435). The diameter of the front end of the shaft connecting cylinder (435) is smaller than the diameter of the baffle (4351).

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