Sampling device for municipal sewage treatment

Abstract

The invention discloses a sampling device for municipal sewage treatment, and relates to the field of sewage treatment.The sampling device for municipal sewage treatment comprises a sewage pump, and the outer wall of the sewage pump is provided with a fixed pipe cleaning mechanism for fixing and sampling. A second supporting piece is driven to turn over from the side wall along with continuous movement of the first sliding rod, so that the multiple faces of the second supporting piece are attached to the inner wall of a well mouth, an electric push rod is driven to rotate through a second rack, and therefore the water suction end of a telescopic pipe is driven to be converted into the horizontal direction from the vertical direction; the telescopic pipe extends to the deep position of the horizontal pipeline to sample municipal sewage at multiple points, meanwhile, the first supporting piece and the second supporting piece are attached to the well wall after being completely unfolded so as to stabilize the gravity center, the device is more stable, the manual adjusting time is shortened, the worm gear has the self-locking performance and is not loosened after being fixed, and it is guaranteed that the sampling process is stable.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to a sampling device for municipal sewage treatment. Background Art

[0002] The sampling device for municipal sewage treatment is used to sample sewage in the municipal sewage pipe, so as to analyze the taken samples.

[0003] As shown in Chinese patent publication number CN118010422A, a sampling device for municipal sewage treatment still has the following shortcomings in actual use: When the sampling device for municipal sewage treatment of the above-mentioned patent is actually used, the first sampling hole and the second sampling hole at the bottom of the sewage are easily blocked by sludge or debris, especially the sharp-angle structure of the elastic sampling valve aggravates the accumulation of sediment, and the butterfly head screw of the positioning frame in the device needs to be manually adjusted, and the fixation of non-standard wellheads (such as elliptical or dimensional deviations) is unstable. When the sampling tube is extended into the sewage pipe to sample points inside the sewage pipe, the center of gravity of the device is offset, causing the circumferential single-point fixation of the butterfly head screw to be longitudinally offset, thereby affecting the normal use of the device. Summary of the Invention

[0004] In order to improve the problems of insufficient anti-clogging ability and unstable device when sampling deep inside the pipe, the present application provides a sampling device for municipal sewage treatment.

[0005] The present application provides a sampling device for municipal sewage treatment using the following technical solutions: A sampling device for municipal sewage treatment comprises a sewage pump, wherein the outer wall of the sewage pump is provided with a fixed pigging mechanism for fixing and sampling; The fixed pigging mechanism includes a worm gear provided on one side of the sewage pump for driving the turntable to rotate horizontally, a sliding rod 1 is provided at the bottom of the turntable to drive the support piece 1 to slide horizontally, the outer wall of the sliding rod 1 is provided with a support piece 2 that rotates synchronously with the connecting rod 2, a sliding column for vertical movement is provided at the bottom of the sewage pump, and a linkage column for sliding on the inner wall of the spiral slide rail is fixedly provided on the outer wall of the sliding column; A sliding tube for driving the cutting blade to move vertically is provided on the outer side of the spiral slide rail, an electric push rod for driving the telescopic tube to extend is provided on the outer wall of the cutting blade, and a rack 2 for driving the electric push rod to rotate is provided on the outer wall of the telescopic tube.

[0006] By adopting the above technical solution, support plate 2 is symmetrically arranged on both sides of support plate 1, so as to make multi-point contact with the wellhead and cooperate with the telescopic tube at the same time, so that the device remains stable when sampling inside the pipeline. The bottom of the cutting plate is set to 30° and the material is hard alloy, so it is convenient to rotate horizontally when the sliding column moves vertically, thereby clearing the silt in the pipe during vertical movement to prevent the pipe mouth from being blocked.

[0007] Preferably, the fixed pipe cleaning mechanism also includes a platform arranged at the bottom of the sewage pump, the top of the platform is fixedly connected to a support frame, the top of the support frame is fixedly connected to a connecting platform, the top of the platform is fixedly connected to a support plate, a rotating cylinder is movably passed through one side wall of the support plate, one end of the rotating cylinder is fixedly connected to a limiting ring, a blocking block is provided on the inner wall of the limiting ring, a driving shaft is provided on the side of the blocking block away from the limiting ring, a spring is fixedly connected to the side wall of the blocking block, the outer wall of the platform is fixedly connected to a rotating column fixedly connected to the outer wall of the limiting plate, the side wall of the platform is fixedly connected to a fixed block, the top of the platform is fixedly connected to an arc-shaped part, and one end of the sliding tube close to the spiral slide rail is slidably connected to the spiral slide rail.

[0008] By adopting the above technical solution, an inclined surface is provided on one side of the clamping block, so that the clamping block and the limiting ring 1 form a one-way limiting structure, so that the clamping block can only drive the limiting ring 1 to rotate in one direction, and thus by adjusting the rotation direction of the driving motor, the driving motor can start different mechanisms, making the coordination between the structures more flexible.

[0009] Preferably, one end of the driving shaft is fixedly connected to a rotating cylinder 2 which movably passes through the inner wall of the rotating cylinder 1, the end of the driving shaft away from the rotating cylinder 2 is fixedly connected to a driving motor which is fixedly connected to a side wall of the support plate, a worm is fixedly passed through the outer wall of the rotating cylinder 1, the outer wall of the worm is meshed with the worm wheel, and a rotating shaft is fixedly passed through the top of the worm wheel.

[0010] By adopting the above technical solution, the top and bottom of gear one are both in contact with limit plate one, thereby limiting the vertical direction of gear one through a pair of limit plates, so that gear one is always engaged with the turntable, thereby avoiding structural operation errors.

[0011] Preferably, a limit plate 1 fixedly connected to the side wall of the platform is movably passed through the outer wall of the rotating shaft, a gear 1 is fixedly passed through the outer wall of the rotating shaft, one side wall of the gear is meshed with the turntable, the inner wall of the turntable is slidably connected to a limit ring 2 fixedly connected to the inner wall of the platform, a sliding shaft is movably passed through the top of the turntable, and the bottom of the sliding shaft is fixedly connected to a sliding rod 1.

[0012] By adopting the above technical solution, multiple sliding shafts are symmetrically arranged around the center, so that the turntable can drive multi-angle sliding shafts at the same time, and the top of the sliding shaft and the top of the turntable maintain the same horizontal height, so that the linkage between the turntable and the sliding shaft is more stable.

[0013] Preferably, the outer wall of the sliding rod is slidably connected to a limit plate fixedly connected to the bottom of the limit ring 2, the inner wall of the sliding rod is slidably connected to a sliding plate, the side wall of the sliding plate is fixedly connected to a spring 2 fixedly connected to the inner wall of the sliding rod, and the side of the sliding plate away from the spring 2 is fixedly connected to a sliding rod 2 that movably passes through the end of the sliding rod.

[0014] By adopting the above technical solution, the cross-sectional area of ​​the sliding rod 2 is smaller than that of the spring 2, so that the spring 2 and the sliding rod 1 are always in a sliding state, the top of the sliding rod 1 and the top of the limit plate are kept at the same height, and the top of the limit plate is fitted with the bottom of the turntable, thereby making the structural combination tighter.

[0015] Preferably, the end of the sliding rod 2 away from the sliding plate is fixedly connected to the support plate 1, a connecting rod 1 is movably provided on one side wall of the sliding rod, a connecting rod 2 is movably provided on the end of the connecting rod 1 away from the sliding rod 1, an end of the connecting rod 2 close to the connecting rod 1 is fixedly connected to the support plate 2, and a connecting strip fixedly connected to the outer wall of the sliding rod 2 is movably provided on the end of the connecting rod 2 away from the support plate 2.

[0016] By adopting the above technical solution, the connecting strips are symmetrically arranged at the top and bottom of the sliding rod 2, thereby making the connection more stable and avoiding the center of the circle from shifting during the rotation of the connecting rod 2, so that the support plate 2 is always in a vertical state when the connecting rod 2 rotates horizontally. By maintaining the same vertical direction as the support plate 2 and the well wall, the friction performance between the support plate 2 and the well wall is made stronger.

[0017] Preferably, the rotating cylinder 2 movably passes through the outer wall of one end of the rotating cylinder 1 and is fixedly connected to a toothed wheel 1, the top of the platform is fixedly connected to a support plate 2, the side wall of the support plate 2 movably passes through the rotating cylinder 3, the end of the rotating cylinder 3 is fixedly connected to the toothed wheel 2, the toothed wheel 2 and the outer wall of the toothed wheel 1 are sleeved with a toothed belt, the outer wall of the rotating cylinder 3 is fixedly passed through a gear 2, the outer wall of the gear 2 is meshed with a rack 1, and the outer wall of the rack 1 is slidably connected to a limit plate 2 fixedly connected to the top of the support frame.

[0018] By adopting the above technical solution, the toothed wheel 2 and the fixed column maintain the same horizontal height, so that the structural transmission is more stable. The diameter of the toothed wheel 2 is consistent with that of the fixed column, thereby avoiding differential problems. Circular disks for limiting the toothed belt are provided on both sides of the toothed wheel 1 and the toothed wheel 2, thereby preventing the toothed belt from falling off horizontally and making the transmission more stable.

[0019] Preferably, a guide cylinder is fixedly passed through the top of the support frame, a spiral slide rail is provided on the inner wall of the guide cylinder, a fixed column is fixedly connected to the top of the inner wall of the guide cylinder, the outer wall of the fixed column is movably connected to the sliding column, and the outer wall of the sliding column is fixedly connected to one end of the linkage column close to the sliding column.

[0020] By adopting the above technical solution, an inclined surface is provided at the bottom of the linkage column to avoid obstruction and interference in sewage sampling and increase the flow rate of sewage in the pipe. The side of the linkage column close to the spiral slide rail is set as a smooth surface to improve the sliding smoothness of the linkage column in the spiral slide rail.

[0021] Preferably, the outer wall of the guide cylinder is slidably connected to the sliding tube, the inner wall of the sliding tube is fixedly connected to a fixed tube, the outer wall of the sliding tube is fixedly penetrated by a connecting plate fixedly penetrated by a rack, the inner wall of the fixed tube is slidably connected to a rotating ring, the bottom of the fixed column is fixedly connected to a sliding disc slidably connected to the sliding column, and the outer wall of the sliding column is fixedly connected to the cutting disc.

[0022] By adopting the above technical solution, the rotating ring is welded by two semicircular rings, which makes it easier to install the rotating ring on the inner wall of the fixed pipe, so that the installation of the device is more in line with the common sense of structural assembly. The outer wall of the fixed pipe and the inner wall of the sliding pipe have the same diameter, thereby avoiding the appearance of gaps that cause poor pumping effect.

[0023] Preferably, the outer wall of the fixed tube is movably connected to the telescopic tube, the outer wall of the telescopic tube is fixedly connected to a linkage plate, the outer wall of the connecting plate is fixedly connected to a synchronization plate, the side wall of the synchronization plate movably penetrates a rotating column, one end of the rotating column close to the telescopic tube is fixedly connected to a limiting plate, and one end of the rotating column away from the limiting plate is fixedly arranged with an electric push rod, the movable end of the electric push rod is fixedly passed through the top of the linkage plate, the side wall of the synchronization plate is fixedly connected to a limiting member, the inner wall of the limiting member is slidably connected to rack two, the top of rack two is fixedly connected to limiting plate three, and the side wall of rack two is meshedly connected with gear three fixedly passed through the rotating column.

[0024] By adopting the above technical solution, the horizontal area of ​​the limit plate three is larger than the top area of ​​the limit part, so that the limit plate three limits the maximum downward movement distance of the rack two, and a smooth hose extends from the bottom of the telescopic tube. When the linkage plate rotates, the water suction end of the smooth hose will always be vertically downward, so that when the electric push rod drives the linkage plate to extend and retract, it is convenient to sample sewage at the bottom of the inner wall of the municipal sewage pipe.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The worm gear drives the turntable to rotate, thereby driving the sliding rod 1 to move outward horizontally, thereby driving the support piece 1 to fit the inner wall of the well. As the sliding rod 1 continues to move, the support piece 2 is driven to flip from the side wall so that it fits the inner wall of the wellhead on multiple sides. The electric push rod is driven to rotate by the rack 2, thereby driving the water suction end of the telescopic tube from the vertical direction to the horizontal direction. Then the electric push rod drives the telescopic tube to extend to the deep part of the horizontal pipe, thereby sampling municipal sewage at multiple points. At the same time, the support pieces 1 and 2 are symmetrically distributed on both sides of the sliding rod 1. After being fully extended, they fit the well wall respectively to stabilize the center of gravity, making the device more stable and reducing manual adjustment time. The worm gear is self-locking and will not loosen after being fixed, ensuring a stable sampling process. 2. When the sliding tube moves vertically downward, the sliding tube will drive the sliding column to move downward. At this time, the linkage column slides in the spiral slide rail, so that the cutting blade rotates when pressing down, breaking large particles of impurities such as sludge and fiber to prevent the sliding tube from being blocked. When the sliding tube rises, the cutting blade will rotate in the opposite direction to shake off the adhering sludge, reduce the maintenance frequency, and ensure that the sewage and bottom sediment enter the sliding tube smoothly through forward and reverse rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram showing the overall structure of the sampling device used for municipal sewage treatment in this application; Figure 2 A partial view of the sampling device platform for municipal sewage treatment used in this application; Figure 3 A partial view of the drive motor of the sampling device for municipal sewage treatment in this application; Figure 4 This is a partial illustration of the card block of the sampling device used in the municipal sewage treatment of this application; Figure 5 A partial view of the turntable of the sampling device for municipal sewage treatment used in this application; Figure 6 A partial cross-sectional view of a portion of a sliding rod of a sampling device for municipal sewage treatment in this application; Figure 7 A partial view of the toothed belt of the sampling device for municipal sewage treatment in this application; Figure 8 A partial view showing the connection pipe of the sampling device for municipal sewage treatment used in this application; Figure 9 A partial cross-sectional view of the fixing column of the sampling device for municipal sewage treatment in this application; Figure 10 A partial cross-sectional view of the fixed pipe of the sampling device for municipal sewage treatment in this application; Figure 11 Sampling device for municipal sewage treatment in this application Figure 10 A partial display of the partial enlarged view at A in the middle; Figure 12 This is a partial illustration of the limiter of the sampling device for municipal sewage treatment used in this application; Figure 13 This is a partial view of the three gears of the sampling device used for municipal sewage treatment in this application.

[0027] Reference numerals: 1. Sewage pump; 2. Fixed pigging mechanism; 21. Platform; 22. Support frame; 23. Connecting platform; 24. Support plate 1; 25. Rotating cylinder 1; 26. Limiting ring 1; 27. Clamping block; 28. Drive shaft; 29. ​​Spring 1; 210. Rotating cylinder 2; 211. Drive motor; 212. Worm; 213. Worm gear; 214. Rotating shaft; 215. Limiting plate 1; 216. Gear 1; 217. Rotating disk; 218. Limiting ring 2; 219. Sliding shaft; 220. Sliding rod 1; 221. Limiting disk; 222. Sliding plate; 223. Spring 2; 224. Sliding rod 2; 225. Support plate 1; 226. Connecting rod 1; 227. Connecting rod 2; 228. Support plate 2; 229. Connecting strip; 230. Toothed wheel 1; 231. Support plate 2; 232. Toothed wheel 2; 233. Toothed belt; 234. Rotating cylinder 3; 235. Gear 2; 236. Rack 1; 237. Limiting plate 2; 238. Guide cylinder; 239. Spiral slide; 240. Fixed column; 241. Sliding column; 242. Linking column; 243. Sliding tube; 244. Fixed tube; 245. Connecting plate; 246. Rotating ring; 247. Sliding disc; 248. Cutting disc; 249. Telescopic tube; 250. Linking plate; 251. Synchronous plate; 252. Rotating column; 253. Limiting plate; 254. Electric push rod; 255. Limiting piece; 256. Rack 2; 257. Limiting plate 3; 258. Gear 3; 259. Fixed block; 260. Arc piece; 261. Fixed ring; 3. Connecting pipe; 4. Water pump pipe; 5. Level ground; 6. Gantry; 7. Towing rope; 8. Municipal sewage pipe. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1-13 This application is described in further detail.

[0029] The embodiment of the present application discloses a sampling device for municipal sewage treatment.

[0030] Reference Figure 1A sampling device for municipal sewage treatment includes a sewage pump 1, a fixed pigging mechanism 2 is arranged on the outer wall of the sewage pump 1, the fixed pigging mechanism 2 includes a worm gear 213 arranged on one side of the sewage pump 1, and the fixed pigging mechanism 2 also includes a platform 21 arranged at the bottom of the sewage pump 1, a support frame 22 is fixedly connected to the top of the platform 21, the bottom of the connecting platform 23 is fixedly connected to the top of the support frame 22, and the top of the connecting platform 23 is fixedly connected to the bottom of the sewage pump 1, so that the platform 21 is fixedly connected to the sewage pump 1 through the support frame 22 and the connecting platform 23, thereby fixing the sewage pump 1, a support plate 24 is fixedly connected to the top of the platform 21, a circular hole 1 is opened through the side wall of the support plate 24, and a rotating cylinder 25 movably passes through the circular hole 1, so that the rotating cylinder 25 is rotatably connected to the support plate 24.

[0031] The staff places the gantry 6 on the top of the flat ground 5, and then clamps the arc-shaped part 260 with the traction rope 7 at the bottom of the gantry 6, and then flange-connects the water outlet end of the water pump pipe 4 with the external connecting water pipe to transport the sample. The gantry 6 is then controlled to lower the platform 21 to the inside of the municipal sewage pipe 8. The platform 21 will drive the support frame 22 to move synchronously into the inside of the municipal sewage pipe 8, and the support frame 22 will drive the connecting platform 23 to move synchronously into the inside of the municipal sewage pipe 8. The connecting platform 23 will drive the sewage pump 1 to move into the inside of the municipal sewage pipe 8. The platform 21 will also drive the support plate 24 to move into the inside of the municipal sewage pipe 8. The support plate 24 will drive the rotating drum 25 to move downward synchronously. At this time, the sewage pump 1 and the drive motor 211 are both in a stationary state. When the platform 21 moves to the set depth, it will be started again.

[0032] Reference Figure 2-Figure 3, a limiting ring 26 is fixedly connected to the end of the rotating cylinder 25, and an annular groove is provided on the inner wall of the limiting ring 26. One end of the block 27 close to the inner wall of the limiting ring 26 contacts the annular groove, and the end of the spring 29 close to the block 27 is fixedly connected to the block 27, and the end of the spring 29 away from the block 27 is fixedly connected to the column 1. The side wall of the end of the block 27 away from the limiting ring 26 is movably penetrated by the column 2, and the side walls of the column 1 and the column 2 are fixedly connected to the rotating cylinder 210, so that the block 27 is driven by the annular groove to compress the spring 29 when it rotates along the column 2, and then the spring 29 drives the block 27 to reset, so that the block 27 fits the annular A circular hole 2 is horizontally opened on the inner wall of the groove and the side wall of the rotating cylinder 1 25. The rotating cylinder 210 movably passes through the circular hole 2, so that the rotating cylinder 210 is rotatably connected to the rotating cylinder 1 25. The outer wall of the rotating cylinder 210 is fixedly connected to the driving shaft 28, so that when the driving shaft 28 drives the rotating cylinder 210 to rotate counterclockwise, the rotating cylinder 210 drives the limiting ring 1 26 to rotate through the blocking block 27, thereby driving the rotating cylinder 1 25 to rotate through the limiting ring 1 26. When the driving shaft 28 drives the rotating cylinder 210 to rotate clockwise, the blocking block 27 slides in accordance with the annular groove, so that the clockwise rotation of the rotating cylinder 210 will not drive the rotating cylinder 1 25 to rotate.

[0033] When the platform 21 reaches the specified depth, the driving motor 211 will drive the driving shaft 28 to rotate counterclockwise, the driving shaft 28 will drive the rotating cylinder 210 to rotate synchronously, the rotating cylinder 210 will drive the block 27 to rotate, and the block 27 will drive the limit ring 1 26 to rotate synchronously. When the driving shaft 28 rotates clockwise, the block 27 will slide on the inner wall of the limit ring 1 26, and is supported by the spring 1 29 to always fit the inner wall of the limit ring 1 26, thereby not driving the limit ring 1 26 to rotate. When the driving shaft 28 rotates counterclockwise, the block 27 will drive the limit ring 1 26 to rotate synchronously, thereby realizing unidirectional rotation limit.

[0034] Reference Figure 4, the output shaft end of the drive motor 211 is fixedly connected to the drive shaft 28, so that the drive motor 211 drives the drive shaft 28 to rotate, and the interface between the drive motor 211 and the sewage pump 1 adopts IP68 grade waterproof treatment, and a double-lip rubber seal is used at the bearing and filled with sewage corrosion-resistant grease (such as perfluoropolyether grease). A plate is fixedly connected to the bottom of the drive motor 211, and the end of the plate close to the support plate 24 is fixedly connected to the support plate 24, thereby fixing the drive motor 211. A circular hole four is opened through the side wall of the worm 212, and a circular hole four is fixedly passed through the outer wall of the rotating cylinder 25, so that the rotating cylinder 25 is fixedly connected to the worm 212, so that the rotating cylinder 25 drives the worm 212 to rotate synchronously when it rotates. The assembly of the worm 212 and the rotating cylinder 25 must be completed before the installation of the worm wheel 213 to ensure that the meshing clearance between the worm 212 and the worm wheel 213 is 0.1-0.2mm, and the outer wall of the worm 212 is close to the worm wheel 213. The side near the worm 212 is meshed, so that when the worm 212 rotates, the worm wheel 213 is driven to rotate. Check the tooth surface wear of the worm wheel 213 / worm 212 every week (add grease after 50 hours of cumulative operation). A circular hole 4 is opened through the top of the worm wheel 213, and the rotating shaft 214 is fixedly passed through the circular hole 4, so that the rotating shaft 214 is fixedly connected to the worm wheel 213. The rotation of the worm wheel 213 will drive the rotating shaft 214 to rotate. A circular hole 5 is opened through the top of the limit plate 1 215 The outer wall of the rotating shaft 214 movably passes through the circular hole five, so that the rotating shaft 214 is rotatably connected to the limit plate 1 215, and the side of the limit plate 1 215 close to the platform 21 is fixedly connected to the side wall of the platform 21. A circular hole 6 is opened through the top of the gear 1 216, and the rotating shaft 214 is fixedly passed through the circular hole 6, so that when the rotating shaft 214 rotates, it drives the gear 1 216 to rotate. The limit plate 1 215 located at the bottom of the gear 1 216 is fixedly connected to the outer wall of the limit plate 221.

[0035] The limiting ring 26 will drive the rotating cylinder 25 to rotate synchronously, and the rotating cylinder 25 will drive the worm 212 to rotate synchronously. When the worm 212 rotates, it will drive the worm wheel 213 to rotate horizontally. The worm wheel 213 will drive the rotating shaft 214 to rotate synchronously. The rotating shaft 214 will drive the limiting plate 215 to rotate synchronously. When the limiting plate 215 rotates, it will drive the gear 216 to rotate.

[0036] Reference Figure 5, the side wall teeth of gear 1 216 are meshed with the outer wall teeth of turntable 217, so that gear 1 216 drives turntable 217 to rotate. When turntable 217 rotates, the sliding shaft 219 at its bottom needs to maintain a 0.5-1mm gap with the arc-shaped slide groove to avoid jamming. A rubber buffer pad (not marked in the figure) needs to be provided at the end of the stroke of sliding rod 1 220 in the square slide groove to reduce the impact. A circular hole 7 is provided on the top of turntable 217. The inner wall of circular hole 7 fits with the outer wall of limiting ring 218, so that limiting ring 218 is slidably connected to turntable 217. A circular hole 8 is provided on the top of platform 21. The circular hole 8 is straight The diameter is consistent with the inner diameter of circular hole seven, the outer wall of limiting ring two 218 is fixedly connected to the inner wall of circular hole eight, the bottom of platform 21 is fitted with the top of limiting ring two 218, and a plurality of arc-shaped sliding grooves are vertically and symmetrically penetrated from the center of the top of turntable 217. The sliding shaft 219 movably penetrates the arc-shaped sliding groove, so that when the turntable 217 rotates, the sliding shaft 219 is driven to slide in the arc-shaped sliding groove, the bottom of the sliding shaft 219 is fixedly connected to the top of sliding rod one 220, and a circular hole nine is penetrated from the top of the limiting disk 221. The diameter of circular hole nine is consistent with the inner diameter of limiting ring two 218, and the bottom of limiting ring two 218 is fixedly connected to the top of limiting disk 221.

[0037] When the limit plate 1 215 drives the gear 1 216 to rotate, the gear 1 216 will drive the turntable 217 to rotate when it rotates, and the turntable 217 will drive the sliding shaft 219 to slide in the arc-shaped slide groove. When the sliding shaft 219 slides in the arc-shaped slide groove, it will drive the sliding rod 1 220 to slide horizontally in the square slide groove. When the sliding rod 1 220 slides, it will drive the sliding rod 2 224 and the support piece 1 225 to move synchronously, thereby driving the support piece 1 225 to support the inner wall of the municipal sewage pipe 8. As the sliding rod 1 220 continues to move, the sliding rod 224 and the spring 2 223 will slide on the inner wall of the limit plate 221, thereby driving the connecting bar 229 to approach the sliding rod 1 220, thereby reducing the distance between the connecting rod 1 226 and the connecting bar 229.

[0038] Reference Figure 5-Figure 6 The top of the limiting plate 221 is symmetrically provided with a plurality of square chutes (such as Figure 5As shown in ), the cross section of the sliding rod 220 is square, and the two sides and the bottom of the sliding rod 220 are fitted with the limit plate 221 through the square sliding groove. The sliding rod 220 is slidably connected to the square sliding groove, and the bottom of the sliding shaft 219 is fixedly connected to the top of the sliding rod 220, so that when the sliding shaft 219 slides in the arc sliding groove, the sliding shaft 219 will drive the sliding rod 220 to perform linear motion in the square sliding groove. When the sliding shaft 219 slides to the terminal end of the arc sliding groove, the sliding shaft 219 will drive the sliding rod 220 to slide horizontally to the outermost end of the sliding rod 220, and the bottom of the turntable 217 is fitted with the top of the limit plate 221. The inner wall of the sliding rod 220 is provided with a square inner groove, and the sliding piece 222 is slidably connected to the square inner groove. The sliding rod 220 is away from the limit ring 218. A square hole 1 is provided through the end, and the cross-section of the square hole 1 is 1-1.5 mm smaller than the square inner groove, so that the sliding piece 222 is always slidably connected to the square inner groove, and the spring 223 is located inside the square inner groove, and one end of the spring 223 is fixedly connected to the sliding piece 222, and the other end of the spring 223 is fixedly connected to the sliding rod 1 220, so that when the sliding piece 222 slides horizontally, the spring 223 will be compressed, and the sliding rod 224 can move through the square hole 1, so that the sliding rod 224 is slidably connected to the sliding rod 1 220. The assembly of the sliding rod 1 220 and the sliding rod 224 requires pre-compression of the spring 223 to the initial compression state (compression amount is about 5 mm), and then inserted into the square hole 1, and the end of the sliding rod 224 close to the sliding piece 222 is fixedly connected to the sliding piece 222.

[0039] The sliding rod 1 220 slides horizontally on one side of the support piece 1 225 driven by the sliding shaft 219, and the connecting rod 1 226 moves horizontally driven by the sliding rod 1 220. At this time, the end of the support piece 1 225 away from the sliding rod 2 224 will support the inner wall of the well, and the spring 2 223 will contract at this time, so that the sliding piece 222 and the sliding rod 2 224 will slide horizontally on the inner wall of the sliding rod 1 220.

[0040] Reference Figure 7The side of the support piece 1 225 close to the sliding rod 224 is fixedly connected to the end of the sliding rod 224 away from the sliding piece 222. When the device is not lowered, the support piece 1 225 and the support piece 2 228 are retracted into the limit plate 221, and their outer edges do not exceed the outline of the platform 21 to avoid interference during lifting. The support piece 1 225 is made of rubber and has an arc shape. The surface of the rubber material has large friction and elasticity. The rubber material of the support piece 1 225 and the support piece 2 228 must comply with the ISO 4637 standard, and the hardness is recommended to be Shore A. 70-80, ensuring that it does not expand or crack in a sewage environment for a long time, thereby improving the stability of the support, the side wall of the sliding rod 220 is fixedly connected to the support 1, the side of the connecting rod 226 close to the support 1 is rotatably connected to the support 1, so that the connecting rod 226 is rotatably connected to the sliding rod 220, and the end of the connecting rod 226 away from the sliding rod 220 is fixedly connected to the shaft 1, the side wall of the connecting rod 227 is rotatably connected to the shaft 1, so that the connecting rod 227 is rotatably connected to the connecting rod 1 226, and one end of the connecting rod 227 is connected to the support sheet The second 228 is fixedly connected to one side of the connecting rod 227, and the support piece 228 is also made of rubber. The other end of the connecting rod 227 is rotatably connected to the shaft body 2, and the shaft body 2 is fixedly connected to the end of the connecting strip 229, so that the connecting strip 229 is rotatably connected to the connecting rod 227. The connecting strip 229 is symmetrically fixedly connected to the top and bottom of the sliding rod 224, so that when the sliding rod 224 slides inside the sliding rod 1 220, the distance between the support 1 and the shaft body 2 becomes smaller, thereby driving the support piece 228 to rotate and fit toward the inner wall of the well.

[0041] The support piece 1 225 will limit the sliding rod 224, so that when the support piece 1 225 is in contact with the inner wall of the well wall, the sliding rod 224 will be limited by the well wall and fixed. Therefore, when the sliding rod 1 220 continues to move horizontally, the distance between the connecting rod 1 226 on the side wall of the sliding rod 1 220 and the connecting strip 229 on the side wall of the sliding rod 2 224 will be reduced. When the distance between the connecting rod 1 226 and the connecting strip 229 is reduced, the connecting rod 1 226 will drive the connecting rod 2 227 to rotate horizontally, thereby driving the support piece 2 228 to rotate toward the inner wall of the municipal sewage pipe 8, so that the support piece 2 228 is in contact with the inner wall of the municipal sewage pipe 8, thereby realizing multi-point internal support.

[0042] Reference Figure 8, a circular hole nine is opened through the side wall of the toothed wheel 1 230, and the rotating cylinder 2 210 is movable and passes through the outer wall of one end of the rotating cylinder 1 25 and is fixed through the circular hole nine, so that the toothed wheel 1 230 is fixedly connected to the rotating cylinder 2 210, and the support plate 2 231 is fixedly connected to the top of the platform 21 and is symmetrically located on both sides of the rack 1 236. The distance between the two support plates 231 is greater than the width of the rack 1 236, so as to avoid interference with the vertical movement of the rack 1 236, and a circular hole ten is opened through the side wall of the support plate 231, and the rotating cylinder 3 234 is movable and passes through the circular hole ten, so that the rotating cylinder 3 234 is rotatably connected to the support plate 2 231, and the end of the rotating cylinder 3 234 is fixedly connected to the toothed wheel 2 232, and the toothed belt 233 is sleeved on the toothed wheel The second 232 and the outer wall of the toothed wheel 1 230, the middle part of the gear 2 235 is penetrated by a circular hole 11, and the outer wall of the rotating cylinder 3 234 is fixed with the circular hole 11, so that the gear 2 235 and the rotating cylinder 3 234 rotate synchronously, and the teeth on the outer wall of the gear 2 235 are engaged with the teeth on the rack 1 236 close to the side of the gear 2 235, so that when the gear 235 rotates, it drives the rack 1 236 to move vertically, and the limiting plate 2 237 is provided with a square groove close to the side of the rack 1 236, and the outer wall of the rack 1 236 is slidably connected to the square groove, so that the rack 1 236 is slidably connected to the limiting plate 237, and the bottom of the limiting plate 237 is fixedly connected to the top of the support frame 22, so that the limiting plate 237 limits the rack 1 236.

[0043] Support piece 228 and support piece 1 225 support the well wall synchronously. Then, when rotating cylinder 210 rotates clockwise, it will also drive toothed wheel 1 230 to rotate synchronously. When toothed wheel 1 230 rotates, it will drive toothed wheel 2 232 to rotate synchronously through toothed belt 233. Toothed wheel 2 232 will drive rotating cylinder 3 234 to rotate synchronously. Rotating cylinder 3 234 will drive gear 2 235 to rotate synchronously. The rotation of gear 2 235 will drive rack 1 236 to slide vertically downward. Rack 1 236 will drive connecting plate 245 to move vertically downward.

[0044] Reference Figure 9, a circular hole twelve is opened on the top of the support frame 22, and the guide cylinder 238 is fixedly passed through the circular hole twelve, so that the guide cylinder 238 is fixedly connected to the support frame 22, and the spiral slide rail 239 is opened on the inner wall of the guide cylinder 238. The matching surface of the spiral slide rail 239 and the linkage column 242 needs to be coated with a wear-resistant coating (such as polytetrafluoroethylene) to reduce friction resistance and avoid sewage corrosion. The fixed column 240 is fixedly connected to the top of the inner wall of the guide cylinder 238, and a circular hole thirteen is opened on the top of the fixed column 240. A circular inner groove is vertically opened on the inner wall of the fixed column 240. The diameter of the circular hole thirteen is smaller than the circular inner groove by 1-1.5 mm. The outer wall of the fixed column 240 movably passes through the circular hole thirteen, so that the fixed column 240 and the sliding column 241 slide Dynamic connection, one end of the linkage column 242 close to the sliding column 241 is fixedly connected to the outer wall of the sliding column 241, and the end of the sliding tube 243 close to the spiral slide rail 239 is slidably connected to the spiral slide rail 239, so that the linkage column 242 will be guided by the trajectory of the spiral slide rail 239 to rotate horizontally, and the outer wall of the guide cylinder 238 fits with the inner wall of the sliding tube 243, so that the guide cylinder 238 and the sliding tube 243 are slidably connected, and the inner wall of the sliding tube 243 is consistent with the outer diameter of the fixed tube 244, and the fixed tube 244 is fixedly connected to the sliding tube 243. A circular hole fourteen is opened on the top of the connecting plate 245, and the outer wall of the sliding tube 243 is fixedly passed through the circular hole fourteen, so that the sliding tube 243 and the connecting plate 245 are fixedly connected.

[0045] When the connecting plate 245 moves vertically downward, the connecting plate 245 will drive the sliding tube 243 to move vertically downward synchronously, the sliding tube 243 will drive the fixed tube 244 to move vertically synchronously, the fixed tube 244 will drive the rotating ring 246 to move vertically synchronously, the rotating ring 246 will drive the cutting blade 248 to move vertically downward, and the cutting blade 248 will drive the sliding column 241 to move vertically synchronously.

[0046] Reference Figure 10, a square hole 2 is opened on the top of the connecting plate 245, and the rack 1 236 is fixedly passed through the square hole 2, so that the rack 1 236 is fixedly connected to the connecting plate 245, and an arc-shaped groove is opened on the inner wall of the fixed tube 244, and the rotating ring 246 is slidably connected to the arc-shaped groove, so that the rotating ring 246 moves vertically with the fixed tube 244, and the rack 1 236 can also rotate horizontally. The bottom of the fixed column 240 is fixedly connected to the top of the sliding disc 247, and the diameter of the sliding disc 247 is consistent with the diameter of the circular inner groove, so that the sliding disc 247 is slidably connected to the circular inner groove, so that the sliding disc 24 7 is always slidably connected to the sliding column 241, and multiple cutting blades 248 are fixedly connected to the outer wall of the sliding column 241 symmetrically. The inner wall of the rotating ring 246 is fixedly connected to the side of the cutting blade 248 close to the rotating ring 246, thereby improving the stability of the structure. When the cutting blade 248 rotates to break mud, the minimum distance between its outer edge and the inner wall of the telescopic tube 249 must be ≥10mm to prevent the cutting blade 248 from scratching the tube wall. The fixed end of the support plate 24 is fixedly connected to the outer wall of the fixed tube 244 by a clamp. The telescopic tube 249 is disassembled by removing the clamp. The telescopic tube 249 is made of polyurethane corrugated tube, and the polyurethane material conforms to ISO 15493 standard, suitable for sewage environment with pH 3-11, with corrosion resistance, wear resistance, and bending flexibility. The corrugated structure can also allow axial expansion and contraction, and stainless steel spiral wire is embedded in the polyurethane to prevent the tube body from collapsing during stretching, maintain the diameter stability, and allow the tube body to bend radially. The inner layer of the telescopic tube 249 is sheathed with a food-grade silicone inner tube, which is resistant to sewage corrosion and has a smooth surface to reduce dirt adhesion, ensuring the cleanliness of the sampling fluid. The polyurethane corrugated tube and the silicone inner tube of the telescopic tube 249 need to be sealed by a hot melt process to prevent sewage from penetrating the interlayer. The inner wall of the telescopic tube 249 is rinsed after each sampling to prevent sludge accumulation.

[0047] When the sliding column 241 moves vertically downward, the linkage column 242 will perform a spiral motion along the trajectory limited by the spiral slide rail 239, thereby driving the sliding column 241 to rotate, thereby driving the cutting blade 248 to rotate to perform the mud breaking step, and the cutting blade 248 will drive the rotating ring 246 to rotate synchronously, and the rotating ring 246 will rotate horizontally on the inner wall of the fixed pipe 244. The fixed pipe 244 will move vertically synchronously with the sliding pipe 243. As the connecting plate 245 continues to move vertically, the bottom of the rack 256 will contact the bottom of the inner wall of the municipal sewage pipe 8.

[0048] Reference Figure 11, a circular hole 14 is opened on the top of the linkage plate 250, and the telescopic tube 249 is fixedly passed through the circular hole 14, so that the end of the telescopic tube 249 away from the sliding tube 243 is fixedly connected to the linkage plate 250, and the synchronous plate 251 is fixedly connected to the side wall of the connecting plate 245, so that the synchronous plate 251 and the connecting plate 245 can move vertically synchronously, and a circular hole 15 is opened through the side wall of the synchronous plate 251, and the rotating column 252 movably passes through the circular hole 15, so that the rotating column 252 and the synchronous plate 251 are rotatably connected, and the limiting piece 253 is fixedly connected to the end of the rotating column 252 close to the telescopic tube 249, and the side of the limiting piece 253 close to the synchronous plate 251 is in contact with the synchronous plate 251, and the diameter of the limiting piece 253 is larger than the diameter of the circular hole 15, so that the limiting piece 253 can rotate with the rotating column 25 2 is limited, the outer wall of the electric push rod 254 is fixedly connected to the inner wall of the fixing ring 261 by a bolt, and the end of the rotating column 252 away from the limiting piece 253 is fixedly connected to the side wall of the fixing ring 261, so that the rotating column 252 drives the electric push rod 254 to rotate, and a circular hole 16 is opened on the top of the linkage plate 250. The movable end of the electric push rod 254 is fixed through the circular hole 16 by a nut, so that the movable end of the electric push rod 254 is fixedly connected to the linkage plate 250, so that when the movable end of the electric push rod 254 is extended, it drives the linkage plate 250 to run synchronously. The initial position (retracted state) of the electric push rod 254 requires that the linkage plate 250 and the axis of the telescopic tube 249 coincide, and the meshing midpoints of the gear 3 258 and the rack 256 are aligned. The electric push rod 254 uses a lithium battery pack (such as 24V 20Ah) as a power source, supporting continuous operation for more than 8 hours. The battery pack simultaneously powers the PLC controller and the electric push rod 254. The PLC controller synchronizes data with the staff's mobile phone or PC via Wi-Fi or 4G connection, allowing real-time viewing of sampling data and remote control.

[0049] When the bottom of rack 256 contacts the bottom of the inner wall of the municipal sewage pipe 8, the subsequent continued downward vertical movement of the connecting plate 245 will drive rack 256 to move relatively upward. At this time, rack 256 will drive gear 3 258 to rotate, and gear 3 258 will drive the electric push rod 254 to rotate. The electric push rod 254 will rotate within the range of ±30°. The electric push rod 254 will drive the linkage plate 250 to rotate synchronously, and the linkage plate 250 will drive the telescopic tube 249 to twist. At this time, support piece 1 225 and support piece 2 228 have completed support.

[0050] Reference Figure 12 -- Figure 13The limiting member 255 is fixedly connected to the side wall of the synchronous plate 251. The horizontal cross-section of the limiting member 255 is in the shape of a "F", which is convenient for limiting the rack 256. The rack 256 is slidably connected to the inner wall of the limiting member 255. The meshing part of the rack 256 and the gear 3 258 needs to be made of stainless steel (such as 304SS) and chrome-plated on the surface to improve corrosion resistance. The limiting plate 3 257 is fixedly connected to the top of the rack 256. When the bottom of the limiting plate 3 257 is fitted with the top of the limiting member 255, the gear 256 is locked. When the rack 256 is in a downward vertical motion, the side teeth of the rack 256 are meshed with the gear 3 258. A circular hole 16 is provided in the middle of the gear 3 258. The rotating column 252 is fixed through the circular hole 16, so that the gear 3 258 drives the rotating column 252 to rotate. The fixed block 259 is fixedly connected to the side wall of the platform 21. The fixed block 259 is in the shape of a "X". The bottom of the fixed block 259 is fixedly connected to the limit plate 221, thereby improving the structural stability. The arc member 260 It is symmetrically fixed to the top of the platform 21, making the hoisting more stable. The side wall of the guide cylinder 238 is fixed to the connecting pipe 3 and connected to each other. The end of the connecting pipe 3 away from the guide cylinder 238 is fixed to the water suction end of the water pump pipe 4 and connected to each other. The output shaft end of the sewage pump 1 is fixedly connected to the side wall of the water pump pipe 4. The water outlet end of the water pump pipe 4 is flange-connected to the external connecting water pipe to preserve the sample. The gantry 6 is placed on the top of the flat ground 5. The bottom of the gantry 6 is mechanically connected to a traction rope 7 for traction. The rope 7 is made of steel wire, and a double lock (main lock + safety pin) needs to be set at the connection between the arc-shaped part 260 and the traction rope 7. The lifting motor of the gantry 6 needs to be equipped with an overload protection function to prevent overloading when the platform 21 is lowered, thereby ensuring the stability of the lifting. The bottom of the traction rope 7 is stably connected with the arc-shaped part 260, thereby driving the traction rope 7 through the gantry 6 to lift the entire device upward or lower the entire device. The municipal sewage pipe 8 is vertically buried in the flat ground 5 for centralized circulation of municipal sewage.

[0051] Then the electric push rod 254 will drive the linkage plate 250 to extend, thereby driving the telescopic tube 249 to extend, thereby extending the sampling depth, and cooperating with the support of the support piece 1 225 and the support piece 2 228, the center of gravity of the device is not at the center of the device, but the device is still in a stable state, and then the sewage pump 1 will drive the water pump pipe 4 to start pumping sewage, and the sewage flows through the telescopic tube 249 through the sliding pipe 243, the guide cylinder 238, the connecting pipe 3, and the water pump pipe 4 and is finally extracted, and the sampling is finally completed. After the sewage extraction is completed, the sewage pump 1 continues to idle for 5 seconds to empty the residual sewage in the telescopic tube 249 to prevent cross contamination. After the sewage sampling is completed, the output shaft of the drive motor 211 will rotate clockwise. At this time, the block 27 will slide on the inner wall of the limit ring 1 26, so that the drive shaft 28 only drives the rotating cylinder 210 to rotate, thereby driving the rack 1 236 to move vertically, thereby driving the sliding tube 243 to rise vertically. At this time, the linkage column 242 will be driven by the spiral slide rail 239 to rotate in the opposite direction, thereby throwing off the sludge stuck to the bottom of the cutting blade 248.

[0052] The sewage pump 1 and the driving motor 211 both use brushless DC motors, and the interfaces are waterproofed and use waterproof plugs.

[0053] The implementation principle of a sampling device for municipal sewage treatment in the embodiment of the present application is as follows: The staff places the gantry 6 on the top of the flat ground 5, and then clamps the arc-shaped part 260 with the traction rope 7 at the bottom of the gantry 6, and then flange-connects the water outlet end of the water pump pipe 4 with the external connecting water pipe to transport the sample, and then controls the gantry 6 to lower the platform 21 into the municipal sewage pipe 8. When the platform 21 reaches the specified depth, the driving motor 211 will drive the worm 212 to rotate synchronously. When the worm 212 rotates, it will drive the worm gear 213 to rotate horizontally. The worm gear 213 will drive the turntable 217 to rotate. The turntable 217 will drive the sliding rod 1 220 to slide horizontally in the square slide groove. When the sliding rod 1 220 slides, it will drive the sliding rod 2 224 and the support piece 1 225 to move synchronously, thereby driving the support piece 1 225 to support the inner wall of the municipal sewage pipe 8. As the sliding rod 1 220 continues to move, the sliding rod 1 220 will drive the support piece 2 228 to the side of the inner wall of the municipal sewage pipe 8. The second support piece 228 is supported by the second support piece 228, and the second support piece 228 is supported by the second support piece 228. The second support piece 228 is supported by the second support piece 228, and the second support piece 228 is supported by the second support piece 228. The second support piece 228 is supported by the second support piece 228, and the second support piece 228 is supported by the second support piece 228. The second support piece 228 is supported by the second support piece 225, and the second support piece 228 is supported by the second support piece 225.

[0054] The above are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure may be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A sampling device for municipal sewage treatment, characterized in that: It comprises a sewage pump (1), wherein the outer wall of the sewage pump (1) is provided with a fixed pigging mechanism (2) for fixing and sampling; The fixed cleaning mechanism (2) includes a worm gear (213) provided on one side of the sewage pump (1) for driving the turntable (217) to rotate horizontally, a sliding rod (220) for driving the support plate (225) to slide horizontally is provided at the bottom of the turntable (217), a support plate (228) for rotating synchronously with the connecting rod (227) is provided on the outer wall of the sliding rod (220), a sliding column (241) for vertical movement is provided at the bottom of the sewage pump (1), and a linkage column (242) for sliding on the inner wall of the spiral slide rail (239) is fixedly provided on the outer wall of the sliding column (241); A sliding tube (243) for driving the cutting blade (248) to move vertically is provided on the outer side of the spiral slide rail (239), an electric push rod (254) for driving the telescopic tube (249) to extend is provided on the outer wall of the cutting blade (248), and a rack 2 (256) for driving the electric push rod (254) to rotate is provided on the outer wall of the telescopic tube (249).

2. A sampling device for municipal sewage treatment according to claim 1, characterized in that: The fixed cleaning mechanism (2) further comprises a platform (21) arranged at the bottom of the sewage pump (1), the top of the platform (21) is fixedly connected to a support frame (22), the top of the support frame (22) is fixedly connected to a connecting platform (23), the top of the platform (21) is fixedly connected to a support plate 1 (24), a rotating cylinder 1 (25) is movably penetrated through the side wall of the support plate 1 (24), the end of the rotating cylinder 1 (25) is fixedly connected to a limiting ring 1 (26), the inner wall of the limiting ring 1 (26) is provided with a clamping block (27), the A drive shaft (28) is provided on the side of the clamping block (27) away from the limiting ring (26), a spring (29) is fixedly connected to the side wall of the clamping block (27), a rotating column (252) fixedly connected to the outer wall of the limiting plate (221) is fixedly connected to the outer wall of the platform (21), a fixed block (259) is fixedly connected to the side wall of the platform (21), an arc-shaped member (260) is fixedly connected to the top of the platform (21), and one end of the sliding tube (243) close to the spiral slide rail (239) is slidably connected to the spiral slide rail (239).

3. A sampling device for municipal sewage treatment according to claim 2, characterized in that: One end of the driving shaft (28) is fixedly connected to the rotating cylinder 2 (210) which is movably penetrated through the inner wall of the rotating cylinder 1 (25); one end of the driving shaft (28) away from the rotating cylinder 2 (210) is fixedly connected to the driving motor (211) which is fixedly connected to the side wall of the supporting plate 1 (24); a worm (212) is fixedly penetrated through the outer wall of the rotating cylinder 1 (25); the outer wall of the worm (212) is meshedly connected with the worm wheel (213); and a rotating shaft (214) is fixedly penetrated through the top of the worm wheel (213).

4. A sampling device for municipal sewage treatment according to claim 3, characterized in that: The outer wall of the rotating shaft (214) is movably penetrated by a limit plate 1 (215) fixedly connected to the side wall of the platform (21); the outer wall of the rotating shaft (214) is fixedly penetrated by a gear 1 (216); the side wall of the gear 1 (216) is meshedly connected to the turntable (217); the inner wall of the turntable (217) is slidably connected to the inner wall of the platform (21) through a limit ring 2 (218); the top of the turntable (217) is movably penetrated by a sliding shaft (219); the bottom of the sliding shaft (219) is fixedly connected to a sliding rod 1 (220).

5. A sampling device for municipal sewage treatment according to claim 4, characterized in that: The outer wall of the sliding rod (220) is slidably connected to a limiting plate (221) fixedly connected to the bottom of the limiting ring (218), the inner wall of the sliding rod (220) is slidably connected to a sliding plate (222), the side wall of the sliding plate (222) is fixedly connected to a spring (223) fixedly connected to the inner wall of the sliding rod (220), and the side of the sliding plate (222) away from the spring (223) is fixedly connected to a sliding rod (224) that movably penetrates the end of the sliding rod (220).

6. A sampling device for municipal sewage treatment according to claim 5, characterized in that: The end of the sliding rod 2 (224) away from the sliding plate (222) is fixedly connected to the support plate 1 (225), the side wall of the sliding rod 1 (220) is movably provided with a connecting rod 1 (226), the end of the connecting rod 1 (226) away from the sliding rod 1 (220) is movably provided with a connecting rod 2 (227), the end of the connecting rod 2 (227) close to the connecting rod 1 (226) is fixedly connected to the support plate 2 (228), and the end of the connecting rod 2 (227) away from the support plate 2 (228) is movably provided with a connecting strip (229) fixedly connected to the outer wall of the sliding rod 2 (224).

7. A sampling device for municipal sewage treatment according to claim 6, characterized in that: The rotating cylinder 2 (210) is movable through the outer wall of one end of the rotating cylinder 1 (25) and is fixedly connected to the toothed wheel 1 (230). The top of the platform (21) is fixedly connected to the support plate 2 (231). The side wall of the support plate 2 (231) is movable through the rotating cylinder 3 (234). The end of the rotating cylinder 3 (234) is fixedly connected to the toothed wheel 2 (232). The toothed wheel 2 (232) and the outer wall of the toothed wheel 1 (230) are provided with a toothed belt (233). The outer wall of the rotating cylinder 3 (234) is fixedly penetrated by the gear 2 (235). The outer wall of the gear 2 (235) is meshedly connected to the rack 1 (236). The outer wall of the rack 1 (236) is slidably connected to the limit plate 2 (237) fixedly connected to the top of the support frame (22).

8. A sampling device for municipal sewage treatment according to claim 7, characterized in that; A guide cylinder (238) is fixedly passed through the top of the support frame (22), a spiral slide rail (239) is provided on the inner wall of the guide cylinder (238), a fixed column (240) is fixedly connected to the top of the inner wall of the guide cylinder (238), an outer wall of the fixed column (240) is movably connected to the sliding column (241), and an outer wall of the sliding column (241) is fixedly connected to one end of the linkage column (242) close to the sliding column (241).

9. A sampling device for municipal sewage treatment according to claim 8, characterized in that; The outer wall of the guide cylinder (238) is slidably connected to the sliding tube (243), the inner wall of the sliding tube (243) is fixedly connected to the fixed tube (244), the outer wall of the sliding tube (243) is fixedly penetrated by a connecting plate (245) fixedly penetrated by rack 1 (236), the inner wall of the fixed tube (244) is slidably connected to a rotating ring (246), the bottom of the fixed column (240) is fixedly connected to a sliding disc (247) slidably connected to the sliding column (241), and the outer wall of the sliding column (241) is fixedly connected to the cutting disc (248).

10. The sampling device for municipal sewage treatment according to claim 9, characterized in that: The outer wall of the fixed tube (244) is movably connected to the telescopic tube (249), the outer wall of the telescopic tube (249) is fixedly connected to a linkage plate (250), the outer wall of the connecting plate (245) is fixedly connected to a synchronization plate (251), and a rotating column (252) is movably passed through the side wall of the synchronization plate (251), and one end of the rotating column (252) close to the telescopic tube (249) is fixedly connected to a limiting plate (253), and the rotating column (252) is away from the limiting plate (253). One end is fixedly arranged with an electric push rod (254), and the movable end of the electric push rod (254) is fixedly passed through the top of the linkage plate (250), and the side wall of the synchronization plate (251) is fixedly connected to the limiting member (255), and the inner wall of the limiting member (255) is slidably connected to the rack 2 (256), and the top of the rack 2 (256) is fixedly connected to the limiting plate 3 (257), and the side wall of the rack 2 (256) is meshedly connected with the gear 3 (258) fixedly passed through the rotating column (252).

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