Stationary pollution source exhaust gas sampling device

Abstract

The utility model relates to the technical field of waste gas collection, specifically relates to fixed pollution source waste gas sampling device, including piston air pump, the gas pipe that communicates in piston air pump outer end surface, a plurality of communication in the gas collecting bottle of gas pipe outer surface and the motor of adaptive installation in the outside of piston air pump, prevent blocking mechanism, including the filter assembly for carrying out the filtration of the gas that enters piston air pump, and the cleaning assembly for the inside of filter assembly is rotated and cleaned automatically when piston air pump operates. The utility model discloses through setting prevent blocking mechanism, not only can intercept dust and solid residue in waste gas automatically when piston air pump operates, avoid the influence sampling of the impurity into piston air pump, and automatically close the waste outlet, prevent waste gas leakage when sampling, still can open the waste outlet and discharge the impurity automatically after piston air pump stops, guarantee sampling gas path unobstructed, to realize the effect that ensure waste gas sample pure, avoid the sampling efficiency decline of the effect caused by the blockage.

Description

Technical Field

[0001] This utility model relates to the field of waste gas collection technology, specifically to a waste gas sampling device for stationary pollution sources. Background Technology

[0002] Stationary pollution source exhaust gas sampling devices are used to accurately collect exhaust gas samples emitted from stationary pollution sources, providing effective evidence for subsequent exhaust gas composition analysis and pollutant concentration detection, and ultimately serving environmental monitoring, pollution control and compliance supervision.

[0003] In the prior art, a fixed pollution source exhaust gas sampling device with patent publication number CN214373619U includes a fixed plate, four parallel universal wheels fixedly installed on the lower surface of the fixed plate, an adjustment mechanism fixedly installed in the middle of the upper surface of the fixed plate, a support plate fixedly installed in the middle of the upper surface of the adjustment mechanism, a rotating mechanism installed in the middle of the upper surface of the support plate, and a sampling mechanism installed on the upper surface of the rotating mechanism. The adjustment mechanism includes a support rod, the rotating mechanism includes a first fixed block, and the sampling mechanism includes a second fixed block. During use, the lack of a cleaning mechanism for the filter screen will cause it to become clogged with dust and solid residue in the exhaust gas over a long period of time. As the clogging worsens, the resistance of the sampling gas path will increase significantly, resulting in a decrease in the pumping efficiency of the air pump. Ultimately, this will reduce the amount of exhaust gas actually entering the sampling system and slow down the sampling speed. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a fixed pollution source exhaust gas sampling device, which can effectively solve the problem that the filter screen will gradually be blocked by dust and solid residue in the exhaust gas after long-term use due to the lack of a cleaning mechanism.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a sampling device for waste gas from a stationary pollution source, including a piston pump, a gas delivery pipe connected to the outer end face of the piston pump, a plurality of gas collection bottles connected to the outer surface of the gas delivery pipe, and a motor adapted to be installed on the outside of the piston pump. The anti-clogging mechanism includes a filter assembly for filtering the gas entering the piston pump, and a cleaning assembly for automatically rotating and cleaning the interior of the filter assembly during operation of the piston pump. The filter assembly is located on the side of the piston pump away from the air delivery pipe, and the cleaning assembly is located inside the filter assembly; The filtration assembly includes a filter canister connected to one end of the piston air pump away from the air supply pipe, an air inlet connected to the other side of the filter canister, a filter cartridge fixedly installed at the bottom protrusion of the inner wall of the filter canister, and a waste outlet connected to the bottom of the filter canister.

[0006] Furthermore, the filter cartridge is used to filter solid impurities from the waste gas residue entering the filter can through the air inlet, and the waste outlet is used to discharge solid impurities from the filter can.

[0007] Furthermore, the cleaning assembly includes a belt sleeved on the output end of the motor via a pulley, a drive rod sleeved on the inner surface of the other end of the belt, a first bevel gear fixedly sleeved on the outer surface of the drive rod, and a second bevel gear meshing with the outer surface of the first bevel gear.

[0008] Furthermore, the cleaning assembly also includes a driven rod fixedly connected to the inner surface of the second bevel gear, a scraper fixedly installed at the through end of the driven rod and used for cleaning the surface of the filter cartridge, and a plurality of push blocks integrally formed on the bottom of the scraper.

[0009] Furthermore, a rotating bearing seat is installed at the connection between the drive rod and the filter tank; When the scraper rotates, it can scrape off the solid impurities attached to the surface of the filter cartridge, and the pusher is used to push the solid impurities in the filter tank into the waste discharge port.

[0010] Furthermore, the anti-clogging mechanism also includes a transmission component that can convert the centrifugal force generated when the cleaning component rotates into linear motion, and a discharge interception component that can close the waste discharge port along with the transmission component when the cleaning component rotates.

[0011] Furthermore, the transmission assembly includes a rotating column fixedly connected to the outer surface of the drive rod, a swing arm rotatably sleeved on the outer surface of the rotating column, a counterweight fixedly connected to the outer end face of the swing arm, a connecting block hinged to the other end of the counterweight, a pressure plate hinged to the other end of the connecting block, a force-receiving block movably connected to the outer surface of the pressure plate, and a spring fixedly installed on the outer end face of the drive rod.

[0012] Furthermore, the pressure plate is slidably sleeved on the outer surface of the drive rod, and the outer end face of the spring is fixedly connected to the outer surface of the pressure plate; The centrifugal force generated when the drive rod rotates can drive the counterweight to rotate the pendulum around the rotating column, thereby causing the pendulum to drive the pressure plate to slide along the drive rod through the connecting block and stretch the spring, and then the pressure plate to squeeze the force block.

[0013] Furthermore, the cut-off assembly includes a connecting column fixedly connected to the outer end face of the force-bearing block, a hinge column hinged to the other end of the connecting column, a swing block hinged to the other end of the hinge column, a rotating rod fixedly connected to the inner surface of the swing block, and a baffle fixedly sleeved on the through end of the rotating rod.

[0014] Furthermore, the outer surface of the connecting column is hinged to the outside of the filter tank, and the outer surface of the rotating rod is in rotatable contact with the inner surface of the waste discharge port; When the force-bearing block is squeezed by the pressure plate, it can drive the connecting column to rotate around the hinge point, thereby causing the connecting column to drive the swing block to rotate around the rotating rod through the hinge column, and the swing block to drive the rotating rod and the baffle to rotate synchronously, and the baffle to close the waste discharge port.

[0015] The technical solution provided by this utility model has the following advantages compared with the known prior art: This invention, by setting up an anti-blocking mechanism, can not only automatically intercept dust and solid residue in the exhaust gas when the piston air pump is running, preventing impurities from entering the piston air pump and affecting sampling, and automatically seal the exhaust port to prevent exhaust gas leakage during sampling, but also automatically open the exhaust port to discharge impurities after the piston air pump stops, ensuring smooth sampling gas path. This achieves the effect of ensuring the purity of the exhaust gas sample while avoiding the decrease in sampling efficiency caused by blockage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the filter tank in this utility model; Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This utility model Figure 2 A magnified structural diagram of a portion of point B in the middle section; Figure 5 This is a schematic diagram of the overall structure of the scraper in this utility model; Figure 6 This is a schematic diagram of the internal structure of the waste discharge port in this utility model.

[0018] The labels in the diagram represent: 100, sampling device body; 110, piston air pump; 120, air supply pipe; 130, gas collection bottle; 140, motor; 200, anti-clogging mechanism; 210, filter assembly; 211, filter canister; 212, air inlet; 213, filter cartridge; 214, waste outlet; 220, cleaning assembly; 221, belt; 222, drive rod; 223, first bevel gear; 22... 4. Second bevel gear; 225. Driven rod; 226. Scraper; 227. Push block; 230. Transmission assembly; 231. Rotating column; 232. Swing rod; 232. Counterweight; 234. Connecting block; 235. Pressure plate; 236. Force-bearing block; 237. Spring; 240. Cutting assembly; 241. Connecting column; 242. Hinge column; 243. Swing block; 244. Rotating rod; 245. Baffle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] The present invention will be further described below with reference to the embodiments.

[0021] Example: Stationary pollution source exhaust gas sampling device, see attached document. Figure 1 - Appendix Figure 6 ,include, Piston air pump 110, air supply pipe 120 connected to the outer end face of piston air pump 110, multiple air collection bottles 130 connected to the outer surface of air supply pipe 120, and motor 140 adapted to be installed on the outside of piston air pump 110. It should be noted that the negative pressure generated by the piston air pump 110 during operation can draw in the waste gas from the fixed pollution source, and then transport the waste gas to the gas collection bottle 130 through the gas delivery pipe 120. The gas delivery pipe 120 is used to ensure that the waste gas can accurately enter multiple gas collection bottles 130 to complete the sample collection. Multiple gas collection bottles 130 can collect multiple samples at a time to meet the needs of different subsequent testing items. The motor 140 is used to provide rotational power for the operation of the piston air pump 110.

[0022] The anti-clogging mechanism 200 includes a filter assembly 210 for filtering the gas entering the piston pump 110, and a cleaning assembly 220 for automatically rotating and cleaning the interior of the filter assembly 210 when the piston pump 110 is running. The filter assembly 210 is located on the side of the piston pump 110 away from the air supply pipe 120, and the cleaning assembly 220 is located inside the filter assembly 210; The filter assembly 210 includes a filter canister 211 connected to the end of the piston air pump 110 away from the air supply pipe 120, an air inlet 212 connected to the other side of the filter canister 211, a filter cartridge 213 fixedly installed at the bottom protrusion of the inner wall of the filter canister 211, and a waste outlet 214 connected to the bottom of the filter canister 211.

[0023] It should be noted that the filter canister 211 is used to provide a closed space for the filtration of exhaust gas. After the exhaust gas enters the filter canister 211 through the air inlet 212, it first contacts the filter cartridge 213 to complete the preliminary filtration. The filter cartridge 213 intercepts the dust and solid residue in the exhaust gas, allowing only clean exhaust gas to pass through and enter the piston air pump 110. The exhaust outlet 214 is a channel for solid impurities, and its sealing can prevent exhaust gas leakage.

[0024] Specifically, the filter cartridge 213 is used to filter solid impurities from the waste gas residue entering the filter canister 211 through the air inlet 212, and the exhaust outlet 214 is used to discharge solid impurities from the filter canister 211.

[0025] Furthermore, the cleaning assembly 220 includes a belt 221 sleeved on the output end of the motor 140 via a pulley, a drive rod 222 sleeved on the inner surface of the other end of the belt 221, a first bevel gear 223 fixedly sleeved on the outer surface of the drive rod 222, and a second bevel gear 224 meshing with the outer surface of the first bevel gear 223.

[0026] Preferably, the cleaning assembly 220 further includes a driven rod 225 fixedly connected to the inner surface of the second bevel gear 224, a scraper 226 fixedly installed at the through end of the driven rod 225 and used for cleaning the surface of the filter cartridge 213, and a plurality of push blocks 227 integrally formed on the bottom of the scraper 226.

[0027] It should also be noted that the belt 221 can transmit the rotational power of the motor 140 to the drive rod 222, so that the drive rod 222 drives the second bevel gear 224 and the driven rod 225 to rotate through the first bevel gear 223. Then, the driven rod 225 drives the scraper 226 to rotate around the filter cylinder 213. Since the edge of the scraper 226 is in contact with the surface of the filter cylinder 213, it can scrape off the solid impurities attached to the filter cylinder 213 by rotating, thus avoiding the filter cylinder from clogging. When the push block 227 rotates with the scraper 226, it can push the scraped impurities accumulated at the bottom of the filter tank 211 toward the waste discharge port 214, providing a guiding force for the discharge of impurities.

[0028] It should be noted that a rotating bearing seat is installed at the connection between the drive rod 222 and the filter tank 211; When the scraper 226 rotates, it can scrape off the solid impurities attached to the surface of the filter cartridge 213, and the pusher 227 is used to push the solid impurities in the filter tank 211 into the waste discharge port 214.

[0029] Furthermore, the anti-clogging mechanism 200 also includes a transmission component 230 that can convert the centrifugal force generated when the cleaning component 220 rotates into linear motion, and a cut-off component 240 that can close the waste discharge port 214 along with the transmission component 230 when the cleaning component 220 rotates.

[0030] Specifically, the transmission assembly 230 includes a rotating column 231 fixedly connected to the outer surface of the drive rod 222, a swing rod 232 rotatably sleeved on the outer surface of the rotating column 231, a counterweight block 233 fixedly connected to the outer end face of the swing rod 232, a connecting block 234 hinged to the other end of the counterweight block 233, a pressure plate 235 hinged to the other end of the connecting block 234, a force-receiving block 236 movably connected to the outer surface of the pressure plate 235, and a spring 237 fixedly installed on the outer end face of the drive rod 222.

[0031] The rotating column 231 can rotate synchronously with the drive rod 222 to drive the swing rod 232 and provide a rotation fulcrum for the swing rod 232. The swing rod 232 is affected by the centrifugal force generated by the rotation of the drive rod 222, which can drive the counterweight 233 to swing outward around the rotating column 231. This causes the counterweight 233 to slide through the connecting block 234 and the pressure plate 235 to slide. Then, while the pressure plate 235 is pressing the force block 236, it stretches the spring 237. When the drive rod 222 stops rotating, the spring 237 can pull the pressure plate 235 to reset through its own elasticity, thereby driving the transmission component 230 to reset.

[0032] Preferably, the pressure plate 235 is slidably sleeved on the outer surface of the drive rod 222, and the outer end face of the spring 237 is fixedly connected to the outer surface of the pressure plate 235; The centrifugal force generated when the drive rod 222 rotates can drive the counterweight 233 to drive the swing rod 232 to rotate around the rotating column 231, so that the swing rod 232 drives the pressure plate 235 to slide along the drive rod 222 through the connecting block 234, and stretches the spring 237, and then the pressure plate 235 squeezes the force block 236.

[0033] Furthermore, the cut-off assembly 240 includes a connecting column 241 fixedly connected to the outer end face of the force-bearing block 236, a hinge column 242 hinged to the other end of the connecting column 241, a swing block 243 hinged to the other end of the hinge column 242, a rotating rod 244 fixedly connected to the inner surface of the swing block 243, and a baffle 245 fixedly sleeved on the through end of the rotating rod 244.

[0034] It should be explained that the hinge column 242 is used to ensure that the swing of the connecting column 241 can drive the swing block 243 to rotate, thereby causing the swing block 243 to rotate around the rotating rod 244, and at the same time driving the rotating rod 244 and the baffle 245 to rotate synchronously, so that the baffle 245 rotates to a position that fits against the inner wall of the exhaust port 214, thereby sealing the exhaust port 214 and preventing exhaust gas leakage. When the device is shut down, the baffle 245 rotates in the opposite direction to open the waste discharge port 214, allowing impurities to be discharged.

[0035] Furthermore, the outer surface of the connecting column 241 is hinged to the outside of the filter tank 211, and the outer surface of the rotating rod 244 is in rotatable contact with the inner surface of the waste discharge port 214. When the force-bearing block 236 is squeezed by the pressure plate 235, it can drive the connecting column 241 to rotate around the hinge point, thereby causing the connecting column 241 to drive the swing block 243 to rotate around the rotating rod 244 through the hinge column 242, and drive the rotating rod 244 and the baffle 245 to rotate synchronously through the swing block 243, and close the waste discharge port 214 through the baffle 245.

[0036] When using, The starter motor 140 provides rotational power to the piston air pump 110, causing it to generate negative pressure. The negative pressure is drawn in the waste gas from the fixed pollution source through the air inlet 212. After the waste gas enters the filter canister 211, it is filtered by the filter cartridge 213 to intercept dust and solid residues. The waste gas without solid impurities enters the piston air pump 110 and is then transported to multiple gas collection bottles 130 through the gas delivery pipe 120 to complete the sample collection. At the same time, the motor 140 drives the drive rod 222, the first bevel gear 223, the second bevel gear 224 and the driven rod 225 to rotate in sequence via the belt 221. The driven rod 225 then drives the scraper 226 to rotate around the filter cylinder 213, so that the edge of the scraper 226 fits against the filter cylinder 213 and scrapes off the attached impurities. At the same time, it drives the pusher block 227 to rotate synchronously, so that the pusher block 227 pushes the impurities at the bottom of the filter tank 211 toward the waste discharge port 214. When the drive rod 222 rotates, it drives the rotating column 231, the swing rod 232 and the counterweight 233 to rotate synchronously. At this time, the swing rod 232 is affected by centrifugal force, which drives the counterweight 233 to swing outward. This causes the swing rod 232 to push the pressure plate 235 to slide along the drive rod 222 through the connecting block 234 and stretch the spring 237. The pressure plate 235 squeezes the force block 236, and the force block 236 drives the connecting column 241 to rotate around the hinge point of the filter tank 211. Subsequently, the connecting column 241 drives the swing block 243 to rotate through the hinge column 242, and then drives the rotating rod 244 and the baffle 245 to rotate through the swing block 243, so that the baffle 245 closes the exhaust port 214 to prevent exhaust gas leakage. After sampling is completed and the machine is stopped, the pressure plate 235 is reset by the spring 237, which causes the transmission component 230 and the discharge component 240 to be linked, driving the baffle 245 to open and discharge the impurities through the waste discharge port 214.

[0037] In summary, by setting up the anti-blocking mechanism 200, not only can dust and solid residue in the exhaust gas be automatically intercepted when the piston air pump 110 is running, preventing impurities from entering the piston air pump 110 and affecting sampling, and the exhaust port 214 be automatically closed to prevent exhaust gas leakage during sampling, but also the exhaust port 214 can be automatically opened to discharge impurities after the piston air pump 110 stops, ensuring smooth sampling gas path. This achieves the effect of ensuring the purity of the exhaust gas sample while avoiding the decrease in sampling efficiency caused by blockage.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stationary pollution source exhaust gas sampling device, comprising a sampling device body (100), characterized in that, Piston air pump (110), air supply pipe (120) connected to the outer end face of the piston air pump (110), multiple gas collection bottles (130) connected to the outer surface of the air supply pipe (120), and motor (140) adapted to be installed on the outside of the piston air pump (110). The anti-clogging mechanism (200) includes a filter assembly (210) for filtering the gas entering the piston pump (110) and a cleaning assembly (220) for automatically rotating and cleaning the interior of the filter assembly (210) when the piston pump (110) is running. The filter assembly (210) is located on the side of the piston pump (110) away from the air supply pipe (120), and the cleaning assembly (220) is located inside the filter assembly (210); The filter assembly (210) includes a filter canister (211) connected to one end of the piston pump (110) away from the air supply pipe (120), an air inlet (212) connected to the other side of the filter canister (211), a filter cartridge (213) fixedly installed at the bottom protrusion of the inner wall of the filter canister (211), and a waste outlet (214) connected to the bottom of the filter canister (211).

2. The stationary pollution source exhaust gas sampling device according to claim 1, characterized in that, The filter cartridge (213) is used to filter solid impurities from the waste gas residue entering the filter tank (211) through the air inlet (212), and the waste outlet (214) is used to discharge solid impurities from the filter tank (211).

3. The stationary pollution source exhaust gas sampling device according to claim 2, characterized in that, The cleaning assembly (220) includes a belt (221) sleeved on the output end of the motor (140) via a pulley, a drive rod (222) sleeved on the inner surface of the other end of the belt (221), a first bevel gear (223) fixedly sleeved on the outer surface of the drive rod (222), and a second bevel gear (224) meshing with the outer surface of the first bevel gear (223).

4. The stationary pollution source exhaust gas sampling device according to claim 3, characterized in that, The cleaning assembly (220) also includes a driven rod (225) fixedly connected to the inner surface of the second bevel gear (224), a scraper (226) fixedly installed at the through end of the driven rod (225) and used for cleaning the surface of the filter cartridge (213), and a plurality of push blocks (227) integrally formed on the bottom of the scraper (226).

5. The stationary pollution source exhaust gas sampling device according to claim 4, characterized in that, A rotating bearing seat is installed at the connection between the drive rod (222) and the filter tank (211); When the scraper (226) rotates, it can scrape off the solid impurities attached to the surface of the filter cartridge (213), and the pusher (227) is used to push the solid impurities in the filter tank (211) into the waste outlet (214).

6. The stationary pollution source exhaust gas sampling device according to claim 5, characterized in that, The anti-clogging mechanism (200) further includes a transmission component (230) that can convert the centrifugal force generated when the cleaning component (220) rotates into linear motion, and a cut-off component (240) that can close the waste outlet (214) with the transmission component (230) when the cleaning component (220) rotates.

7. The stationary pollution source exhaust gas sampling device according to claim 6, characterized in that, The transmission assembly (230) includes a rotating column (231) fixedly connected to the outer surface of the drive rod (222), a swing rod (232) rotatably sleeved on the outer surface of the rotating column (231), a counterweight (233) fixedly connected to the outer end face of the swing rod (232), a connecting block (234) hinged to the other end of the counterweight (233), a pressure plate (235) hinged to the other end of the connecting block (234), a force-receiving block (236) movably connected to the outer surface of the pressure plate (235), and a spring (237) fixedly installed on the outer end face of the drive rod (222).

8. The stationary pollution source exhaust gas sampling device according to claim 7, characterized in that, The pressure plate (235) is slidably sleeved on the outer surface of the drive rod (222), and the outer end face of the spring (237) is fixedly connected to the outer surface of the pressure plate (235); The centrifugal force generated when the drive rod (222) rotates can drive the counterweight (233) to rotate the pendulum (232) around the rotating column (231), thereby causing the pendulum (232) to drive the pressure plate (235) to slide along the drive rod (222) through the connecting block (234) and stretch the spring (237), and then the pressure plate (235) squeezes the force block (236).

9. The stationary pollution source exhaust gas sampling device according to claim 8, characterized in that, The cut-off assembly (240) includes a connecting column (241) fixedly connected to the outer end face of the force-bearing block (236), a hinge column (242) hinged to the other end of the connecting column (241), a swing block (243) hinged to the other end of the hinge column (242), a rotating rod (244) fixedly connected to the inner surface of the swing block (243), and a baffle (245) fixedly sleeved on the through end of the rotating rod (244).

10. The stationary pollution source exhaust gas sampling device according to claim 9, characterized in that, The outer surface of the connecting column (241) is hinged to the outside of the filter tank (211), and the outer surface of the rotating rod (244) is in rotatable contact with the inner surface of the waste discharge port (214). When the force-bearing block (236) is squeezed by the pressure plate (235), it can drive the connecting column (241) to rotate around the hinge point, so that the connecting column (241) drives the swing block (243) to rotate around the rotating rod (244) through the hinge column (242), and drives the rotating rod (244) and the baffle (245) to rotate synchronously through the swing block (243), and closes the waste outlet (214) through the baffle (245).

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