Sampling device for municipal sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, in particular to a sampling device for municipal sewage treatment.The sampling device comprises a floating assembly, the lower end of the floating assembly is in bolted connection with a sampling assembly through a connecting sleeve, and a plurality of first filtering grooves are evenly distributed in the periphery of the connecting sleeve; the floating assembly comprises an outer barrel, a water pressure sensor is arranged on the inner side of the outer barrel, an upper cover plate is in bolted connection with the upper end of the outer barrel, an air cylinder is arranged on the lower side of the upper cover plate, an inflation head communicated with the air cylinder is arranged on the upper side of the upper cover plate, a piston is slidably connected into the air cylinder, the piston is in threaded connection with a screw, and a plurality of second filtering grooves are evenly distributed in the middle of the lower cover plate. The sampling assembly can stay in water at different depths, so that sampling of different water layers is realized; depth adjustment and sampling operation can be automatically completed, manual operation is reduced, and sampling accuracy and sampling efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a sampling device for municipal wastewater treatment. Background Technology

[0002] Municipal wastewater is water pollution caused by human production activities. This wastewater flows into the sewage pools of wastewater treatment plants through sewer pipes. When treating municipal wastewater, it is necessary to first sample and analyze the wastewater, and then formulate a wastewater treatment process.

[0003] Sampling devices mostly rely on manual sampling, requiring staff to insert the sampler into the water tank. This is inefficient and labor-intensive. Furthermore, the sampler swings back and forth during the upward movement, which may cause water sample leakage. In addition, the water contains various impurities, and the sewage will stratify. The water quality of the bottom, middle, and top layers of the tank is different, requiring separate sampling and testing to ensure the accuracy of the test results. Layered sampling brings greater challenges to the testing personnel.

[0004] Therefore, a sampling device for municipal wastewater treatment is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a sampling device for municipal wastewater treatment.

[0006] This invention provides a sampling device for municipal wastewater treatment, including a floating component. The lower end of the floating component is bolted to a sampling component via a connecting sleeve. Multiple filter tanks are evenly distributed around the outer periphery of the connecting sleeve. The floating assembly includes an outer cylinder with a water pressure sensor inside. A top cover plate is bolted to the upper end of the outer cylinder. A cylinder is located on the lower side of the top cover plate, and an inflation head communicating with the cylinder is located on the upper side of the top cover plate. A piston, including a piston disc, is slidably connected inside the cylinder. The piston disc is fixedly connected to a drive plate via a waist-shaped connecting block. The drive plate has a threaded hole on each side, with a screw threaded into each hole. The upper end of the screw is rotatably connected to the lower side of the top cover plate, and the lower end is rotatably connected to the upper side of the lower cover plate. The lower cover plate is bolted to the lower end of the outer cylinder. Multiple filter slots are evenly distributed in the middle of the lower cover plate. Rotation of the screws adjusts the position of the piston disc, causing a change in the volume of gas inside the cylinder. Since water can enter and exit the floating assembly through filter slots one and two, the buoyancy of the sampling assembly is adjusted. The sampling device's position in the water can be adjusted based on the pressure value detected by the water pressure sensor, allowing the sampling device to remain at different water depths.

[0007] Furthermore, the outer cylinder is filled with butane gas. Butane can be adjusted to a gaseous or liquid state at room temperature according to pressure changes, thus allowing it to switch between gaseous and liquid states depending on the position of the piston disc, thereby adjusting the pressure inside the cylinder and preventing excessive pressure difference between the inside and outside of the cylinder.

[0008] Furthermore, both screws pass through the lower cover plate. The lower outer end of the right screw is rotatably connected to a worm gear, which is meshed with a worm. The worm is connected to the motor's output shaft via a coupling. A bevel gear one is coaxially fixedly connected to the lower side of the worm gear. Bevel gear one meshes with bevel gear two. Bevel gear two is rotatably mounted on the lower cover plate via a connecting rod. A bevel gear three is fixedly mounted at the other end of the connecting rod, meshing with a bevel gear four. Hexagonal sleeves are coaxially fixedly connected to the sides of bevel gear one and bevel gear four away from the lower cover plate. Bevel gear one and bevel gear four drive the hexagonal sleeves connected to them to rotate synchronously in opposite directions. Due to the self-locking property of the worm gear and worm, the worm gear, bevel gear one, bevel gear two, bevel gear three, and bevel gear four are positioned, preventing them from reversing.

[0009] Furthermore, both hexagonal sleeves are slidably fitted with clutch sleeves on their outer sides. The clutch sleeves are hollow cylinders. A large hexagonal hole is provided at the lower end of the clutch sleeve. A small hexagonal hole is connected to the upper end of the large hexagonal hole through a guide part three. A guide part two is provided at the upper end of the small hexagonal hole. The large hexagonal hole is slidably fitted on the outer side of the hexagonal sleeve and is in clearance fit with the hexagonal sleeve. The two screws have opposite thread directions, and each screw has a round rod portion near the lower cover plate. The upper end of the round rod portion has a hexagonal prism portion, and the end of the hexagonal prism portion has a guide portion. The round rod portion rotatably fits within the circular through hole at the center of the hexagonal sleeve, and the hexagonal prism portion rotatably abuts against the end of the hexagonal sleeve, with a clearance fit between the hexagonal prism portion and the small hexagonal hole of the clutch sleeve. The movement of the clutch sleeve interrupts and reconnects the power transmission between the hexagonal sleeve and the screws. Simultaneously, the guide portion one of the screw and the guide portion three of the clutch sleeve cooperate to ensure that the clutch sleeve smoothly engages with the end of the screw.

[0010] Furthermore, the lower end of the clutch sleeve is provided with an annular groove, which rotatably fits into both ends of the clutch rod. An ear plate is provided on the side of the clutch rod near the lower cover plate, and an inclined sliding groove is provided laterally within the ear plate. A drive slide pin is slidably connected within the sliding groove, and the drive slide pin is fixedly connected to the output end of the electric push rod, which is fixedly connected to the lower cover plate. The output end of the electric push rod drives the drive slide pin to move within the sliding groove, thereby driving the clutch rod to move up and down. The clutch rod then drives the two clutch sleeves to move up and down, thus interrupting and reconnecting the power transmission between the hexagonal sleeve and the screw.

[0011] Furthermore, a locking disc is fixedly installed on the screw on the side away from the worm gear. Multiple locking grooves are evenly distributed around the outer circumference of the locking disc, and a locking head is movably engaged within each groove. The locking head is retractably mounted within a locking seat, which is bolted to the lower cover plate. By using the locking disc and locking heads, the screw can be locked, thus preventing it from rotating freely.

[0012] Furthermore, the sampling assembly includes a base shell, with a bottom cover bolted to the upper end of the base shell. Two chucks, arranged vertically, are rotatably connected to the center of the lower side of the bottom cover. Multiple slots are evenly distributed around the outer perimeter of the chucks, each holding a sampling bottle. The bottom of each sampling bottle abuts against the inner bottom of the base shell, and the top of the bottle abuts against the lower side of the bottom cover. All sampling bottles slide against the inner wall of the base shell. The bottom cover has a sampling hole corresponding to the top of each sampling bottle. The slots in the chucks allow multiple sampling bottles to be secured to them. The base shell and bottom cover provide fixation and positioning of the sampling bottles. Rotation of the chucks sequentially aligns the top of each sampling bottle with the sampling hole, allowing water to enter the bottle through the sampling hole, thus sampling the water. When the sampling bottle detaches from the sampling hole, the bottom cover seals the bottle, preventing water from entering or leaving.

[0013] Furthermore, a second gear, coaxially fixedly connected to the chuck, is rotatably mounted on the upper side of the bottom cover. The upper end of the second gear is rotatably connected to a support frame, which is fixedly welded to the upper side of the bottom cover. A first gear is meshed with the left side of the second gear. A ratchet groove is coaxially fixedly connected to the upper side of the first gear. The left side of the ratchet groove is meshed with a ratchet turntable. The lower side of the ratchet turntable is rotatably connected to the bottom cover via a support block. A hexagonal swivel is coaxially fixedly connected to the upper end of the ratchet turntable. The hexagonal swivel is coaxially arranged with the screw, and the upper end of the hexagonal swivel contacts the lower end of the hexagonal swivel of the screw. The ratchet turntable drives the ratchet groove to rotate intermittently, and the ratchet turntable can position the ratchet groove to prevent it from rotating freely.

[0014] Furthermore, gear three is meshed with the right side of gear two, gear four is coaxially fixedly connected to the upper side of gear three, gear five is meshed with the right side of gear four, and a cleaning turntable is coaxially fixedly connected to the lower side of gear five. The cleaning turntable is rotatably connected to the center of the sampling hole, and the lower side of the cleaning turntable abuts against the sampling hole. By setting up the cleaning turntable, when gear two rotates, it will sequentially drive gear three, gear four, gear five, and the cleaning turntable to rotate. When the cleaning turntable rotates, it can clean the sampling hole, thereby preventing impurities from contaminating the sampled water.

[0015] The beneficial effects of this invention are as follows: by setting a floating component, the sampling component can remain in water at different depths, enabling sampling from different water layers; the sampling device can automatically complete depth adjustment and sampling operations, reducing manual operation and improving sampling accuracy and efficiency; the sampling component can seal and fix the sampling bottle, preventing the collected water samples from mixing and improving detection accuracy; and by setting a cleaning turntable to clean the sampling hole, the sampled water can be kept pure and prevented from being contaminated. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional partially exploded structure of the present invention; Figure 3 This is a schematic diagram of a partially exploded structure of the floating component of the present invention; Figure 4 This is a partial bottom view of the floating component structure of the present invention; Figure 5 This is a top view of the fractured structure of the floating component of the present invention; Figure 6 This is an exploded structural diagram of the screw section of the floating component of the present invention; Figure 7 This is a schematic cross-sectional view of the clutch sleeve of the present invention; Figure 8 This is a schematic diagram of the sampling component structure of the present invention; Figure 9 This is a schematic diagram of a partial explosion of the sampling component of the present invention.

[0018] Figure label: 1 Floating assembly, 11 Upper cover plate, 111 Inflation head, 112 Cylinder, 12 Outer cylinder, 13 Lower cover plate, 131 Filter tank II, 14 Piston, 141 Drive plate, 142 Screw, 1421 Round rod part, 1423 Hexagonal prism part, 1424 Guide part I, 143 Piston disc; 15 Motor, 151 Coupling, 152 Worm Gear, 153 Worm Wheel, 154 Bevel Gear I, 1541 Hexagonal Sleeve, 1542 Circular Through Hole, 155 Bevel Gear II, 156 Connecting Rod, 157 Bevel Gear III, 158 Bevel Gear IV, 16 Electric Push Rod, 161 Drive Slide, 17 Clutch Rod, 171 Ear Plate, 172 Slide Groove; 18 Clutch sleeve, 181 Ring groove, 182 Large hexagonal hole, 183 Small hexagonal hole, 184 Guide part two, 185 Guide part three; 19 Locking seat, 191 Locking head, 192 Locking disc; 2 connecting sleeves, 21 filter tanks; 3 Sampling assembly, 31 bottom shell, 32 bottom cover, 321 support frame, 323 support block, 324 sampling hole, 33 ratchet turntable, 331 hexagonal rotating column, 332 ratchet groove plate, 34 gear one, 341 gear two, 342 gear three, 343 gear four, 344 gear five, 345 cleaning turntable, 35 chuck, 36 sampling bottle. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figures 1-9 As shown, the present invention provides a sampling device for municipal sewage treatment, including a floating component 1. The lower end of the floating component 1 is bolted to the sampling component 3 through a connecting sleeve 2. Multiple filter tanks 21 are evenly distributed on the outer periphery of the connecting sleeve 2. Water can automatically enter and exit the sampling device through the filter tanks 21, and the water can be filtered to prevent large impurities from entering the sampling device.

[0020] The floating component 1 uses the principle of buoyancy to control the raising and lowering of the sampling device, enabling the sampling device to remain at different water depths.

[0021] See Figures 3-4 The floating component 1 includes an outer cylinder 12. A water pressure sensor is installed inside the outer cylinder 12. The water pressure sensor is existing technology and will not be described in detail here. The upper end of the outer cylinder 12 is bolted to an upper cover plate 11. A cylinder 112 is installed on the lower side of the upper cover plate 11. An inflation head 111 communicating with the cylinder 112 is installed on the upper side of the upper cover plate 11. A piston 14 is slidably connected inside the cylinder 112. The piston 14 includes a piston disc 143. The piston disc 143 is fixedly connected to the drive plate 141 through a waist-shaped connecting block. A threaded hole is provided on each of the left and right sides of the drive plate 141. A screw 142 is threaded into each of the two threaded holes. The upper end of the screw 142 is rotatably connected to the lower side of the upper cover plate 11, and the lower end of the screw 142 is rotatably connected to the upper side of the lower cover plate 13. The lower cover plate 13 is bolted to the lower end of the outer cylinder 12. Multiple filter grooves 131 are evenly distributed in the middle of the lower cover plate 13. The rotation of screw 142 adjusts the position of piston disc 143, causing a change in the volume of gas in cylinder 112. Since water can enter and exit the floating assembly 1 through filter tank 1 21 and filter tank 2 131, the buoyancy of the sampling assembly 1 is adjusted. The position of the sampling device in the water can be adjusted according to the pressure value detected by the water pressure sensor, so that the sampling device can stay at different water depths.

[0022] Furthermore, the outer cylinder 12 is filled with butane gas. Since butane is a colorless gas with a slight odor and a boiling point of -0.5 degrees Celsius at atmospheric pressure, butane can be adjusted to either a gaseous or liquid state at room temperature according to pressure changes. This allows it to switch between gaseous and liquid states depending on the position of the piston disc 143, thereby adjusting the pressure inside the cylinder 112 and preventing excessive pressure differences between the inside and outside of the cylinder 112.

[0023] Further, see Figure 4 and Figure 5 Both screws 142 pass through the lower cover plate 13. The lower outer end of the right screw 142 is rotatably connected to a worm gear 153. The outer side of the worm gear 153 is meshed with a worm 152. The worm 152 is connected to the output shaft of the motor 15 via a coupling 151. The lower side of the worm gear 153 is coaxially and fixedly connected to a bevel gear 154. The bevel gear 154 meshes with a bevel gear 155. The bevel gear 155 is rotatably mounted on the lower cover plate 13 via a connecting rod 156. The other end of the connecting rod 156 is fixedly equipped with a bevel gear 157. The bevel gear 157 meshes with a bevel gear 158. (See also...) Figure 6 Both bevel gear 154 and bevel gear 4 158 are coaxially fixedly connected to hexagonal sleeves 1541 on the side away from the lower cover plate 13. The motor 15 drives the worm 152 to rotate, which in turn drives the worm wheel 153 to rotate. The worm wheel 153 then drives the bevel gears 154, 155, 157, and 158 to rotate in sequence. The bevel gears 154 and 158 drive the hexagonal sleeves 1541 connected to them to rotate synchronously in opposite directions. Because the meshing of the worm wheel 153 and the worm 152 has a self-locking property, the worm wheel 153, bevel gear 154, 155, 157, and 158 can be positioned to prevent them from reversing.

[0024] Further, see Figure 6 and Figure 7 Both hexagonal sleeves 1541 are slidably fitted with clutch sleeves 18 on their outer sides. The clutch sleeves 18 are hollow cylinders. The lower end of the clutch sleeves 18 is provided with a large hexagonal hole 182. The upper end of the large hexagonal hole 182 is connected to a small hexagonal hole 183 through a guide part three 185. The upper end of the small hexagonal hole 183 is provided with a guide part two 184. The large hexagonal hole 182 is slidably fitted on the outside of the hexagonal sleeves 1541 and is in clearance fit with the hexagonal sleeves 1541. The threads of the two screws 142 are opposite, and each screw 142 has a round rod portion 1421 at one end near the lower cover plate 13. The upper end of the round rod portion 1421 is provided with a hexagonal prism portion 1423, and the end of the hexagonal prism portion 1423 is provided with a guide portion 1424. The round rod portion 1421 is rotatably disposed in the circular through hole 1542 at the center of the hexagonal sleeve 1541 and is clearance-fitted with the circular through hole 1542. The hexagonal prism portion 1423 rotatably abuts against the end of the hexagonal sleeve 1541 and is clearance-fitted with the small hexagonal hole 183 of the clutch sleeve 18. The hexagonal sleeve 1541 and the large hexagonal hole 182 are always in sliding contact. The rotation of the hexagonal sleeve 1541 drives the clutch sleeve 18 to rotate continuously following the rotation of the hexagonal sleeve 1541. At the same time, when the small hexagonal hole 183 is engaged with the hexagonal prism portion 1423 of the screw 142, the screw 142 is in a rotating state. When the clutch sleeve 18 moves axially, causing the small hexagonal hole 183 to disengage from the hexagonal prism portion 1423 of the screw 142, the clutch sleeve 18 no longer drives the screw 142 to rotate, thereby realizing the interruption and connection of power transmission between the hexagonal sleeve 1541 and the screw 142. At the same time, the guide portion 1424 of the screw 142 and the guide portion 3 of the clutch sleeve 18 cooperate with each other to enable the clutch sleeve 18 to be smoothly engaged at the end of the screw 142.

[0025] Furthermore, the lower end of the clutch sleeve 18 is provided with an annular groove 181, which is rotatably sleeved within both ends of the clutch rod 17. The clutch rod 17 has an ear plate 171 on the side near the lower cover plate 13. An inclined sliding groove 172 is laterally provided within the ear plate 171. A drive slide column 161 is slidably connected within the sliding groove 172. The drive slide column 161 is fixedly connected to the output end of the electric push rod 16, which is fixedly connected to the lower cover plate 13. The output end of the electric push rod 16 drives the drive slide column 161 to move within the sliding groove 172, thereby driving the clutch rod 17 to move up and down. The clutch rod 17 then drives the two clutch sleeves 18 to move up and down, thus interrupting and reconnecting the power transmission between the hexagonal sleeve 1541 and the screw 142.

[0026] Further, see Figure 5A locking disc 192 is fixedly installed on the screw 142 on the side away from the worm gear 153. Multiple locking grooves are evenly distributed around the outer circumference of the locking disc 192. A locking head 191 is movably engaged within each locking groove. The locking head 191 is retractably mounted within a locking seat 19, which is bolted to the lower cover plate 13. When the clutch sleeve 18 is no longer circumferentially fixed to the screw 142, the locking disc 192 and locking head 191 can lock the screw 142, preventing it from rotating freely. When the clutch sleeve 18 is circumferentially fixed to the screw 142, and the clutch sleeve 18 drives the screw 142 to rotate, the locking head 191 extends and retracts, sequentially contacting and disengaging from the locking grooves of the locking disc 192. The locking disc 192 can then rotate, thus not affecting the rotation of the screw 142 driven by the motor 15.

[0027] Further, see Figure 8 and Figure 9 The sampling assembly 3 includes a bottom shell 31, a bottom cover 32 bolted to the upper end of the bottom shell 31, and two chucks 35 arranged vertically connected to the lower center of the bottom cover 32. Multiple slots are evenly distributed around the outer periphery of the chucks 35, and multiple sampling bottles 36 are engaged in the slots. The bottom end of the sampling bottle 36 abuts against the inner bottom of the bottom shell 31, and the upper end of the sampling bottle 36 abuts against the lower side of the bottom cover 32. Multiple sampling bottles 36 slide in contact with the inner wall of the bottom shell 31. The bottom cover 32 is provided with a sampling hole 324 corresponding to the upper end of the sampling bottle 36. The chuck 35 has slots that allow multiple sampling bottles 36 to be secured to it. The bottom shell 31 and bottom cover 32 restrict and fix the sampling bottles 36. As the chuck 35 rotates, the upper end of each sampling bottle 36 aligns with the sampling hole 324. Water then enters the sampling bottle 36 through the sampling hole 324, allowing water to be sampled. When the sampling bottle 36 is removed from the sampling hole 324, the bottom cover 32 seals the sampling bottle 36 to prevent water from entering or flowing out.

[0028] Furthermore, a second gear 341 is rotatably mounted on the upper side of the bottom cover 32 and coaxially fixedly connected to the chuck 35. The upper end of the second gear 341 is rotatably connected to the support frame 321, which is fixedly welded to the upper side of the bottom cover 32. A first gear 34 is meshed with the left side of the second gear 341. A ratchet groove 332 is coaxially fixedly connected to the upper side of the first gear 34. The left side of the ratchet groove 332 is meshed with the ratchet turntable 33. The lower side of the ratchet turntable 33 is rotatably connected to the bottom cover 32 via a support block 323. The Geneva clearance motion structure formed by the left side of the ratchet groove 332 and the ratchet turntable 33 is existing technology. The ratchet turntable 33 drives the ratchet groove 332 to rotate with clearance, and the ratchet turntable 33 can position the ratchet groove 332 to prevent it from rotating freely. A hexagonal rotating column 331 is coaxially fixedly connected to the upper end of the ratchet turntable 33. (See also...) Figure 2The hexagonal rotating column 331 is coaxially arranged with the screw 142, and the upper end of the hexagonal rotating column 331 contacts the lower end of the hexagonal prism portion 1423 of the screw 142. During operation, when the clutch sleeve 18 moves downward under the drive of the clutch rod 17, the small hexagonal hole 183 of the clutch sleeve 18 disengages from the hexagonal prism portion 1423 of the screw 142. When the clutch sleeve 18 is no longer circumferentially fixed to the screw 142, the small hexagonal hole 183 of the clutch sleeve 18 will be sleeved on the hexagonal rotating column 331. At this time, the clutch sleeve 18 can drive the hexagonal rotating column 331 to rotate. When the hexagonal rotating column 331 rotates, it sequentially drives the ratchet turntable 33, the ratchet groove 332, the first gear 34, and the second gear 341 to rotate, thereby driving the chuck 35 to rotate. The chuck 35 drives the sampling bottle 36 to move. The sampling bottle 36 contacts the sampling hole 324 and then disengages, completing the sampling function.

[0029] Furthermore, gear 342 is meshed with the right side of gear 2 341. Gear 4 343 is coaxially fixedly connected to the upper side of gear 342. Gear 5 344 is meshed with the right side of gear 4 343. Cleaning turntable 345 is coaxially fixedly connected to the lower side of gear 5 344. Cleaning turntable 345 is rotatably connected to the center of sampling hole 324, and the lower side of cleaning turntable 345 abuts against sampling hole 324. By setting up cleaning turntable 345, when gear 2 341 rotates, it will sequentially drive gear 342, gear 4 343, gear 5 344, and cleaning turntable 345 to rotate. When cleaning turntable 345 rotates, it can clean sampling hole 324, thereby preventing impurities from contaminating the sampled water.

[0030] During operation, the bottom shell 31 and the bottom cover 32 are separated. The bottom shell 31 and the bottom cover 32 are detachable connected by bolts. For easy disassembly, a quick-disassembly structure, such as a snap-fit ​​connection, can also be provided between the bottom shell 31 and the bottom cover 32. This connection method is not an innovation of this invention. Then, the piston disc 143 is placed at the bottom of the cylinder 112 to maximize the buoyancy of the sampling device. Then, the sampling device is placed in the water area to be sampled. At this time, the sampling device floats on the water surface or is at the top of the water body.

[0031] Then, the clutch sleeve 18 moves downward under the drive of the clutch lever 17, and the clutch sleeve 18 engages with the hexagonal rotating column 331. The motor 15 drives the clutch sleeve 18 and the hexagonal rotating column 331 to rotate, which in turn drives the chuck 35 and the sampling bottle 36 to rotate. The upper end of the sampling bottle 36 coincides with the sampling hole 324, and the sampling is completed.

[0032] Subsequently, the clutch sleeve 18 moves upward under the drive of the clutch rod 17. The clutch sleeve 18 disengages from the hexagonal rotating column 331 and engages with the hexagonal prism part 1423 of the screw 142. At this time, the motor 15 rotates, driving the screw 142 to rotate. The screw 142 drives the piston disc 143 to move upward, reducing the volume between the piston disc 143 and the cylinder 112. As a result, the buoyancy of the sampling device decreases, causing it to sink downward and enter deeper water.

[0033] Then, the clutch sleeve 18 moves downward again under the drive of the clutch lever 17. The clutch sleeve 18 engages with the hexagonal rotating column 331. The motor 15 drives the clutch sleeve 18 and the hexagonal rotating column 331 to rotate, which in turn drives the chuck 35 and the sampling bottle 36 to rotate. The upper end of the sampling bottle 36 coincides with the sampling hole 324, completing the sampling and thus completing the sampling of water at different depths.

[0034] Repeat the above process to complete water sampling at different depths. Finally, the motor 15 drives the piston disc 143 to the bottom of the cylinder 112, which increases the buoyancy of the sampling device, causing the sampling device to float up and realize the recovery of the sampling device and the sampling bottle 36, thus completing the final sampling operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended technical solutions and their equivalents.

Claims

1. A sampling device for municipal wastewater treatment, comprising a floating component (1), the lower end of which is bolted to a sampling component (3) via a connecting sleeve (2), wherein a plurality of filter grooves (21) are evenly distributed on the outer periphery of the connecting sleeve (2); characterized in that: The floating assembly (1) includes an outer cylinder (12), a water pressure sensor is provided inside the outer cylinder (12), an upper cover plate (11) is bolted to the upper end of the outer cylinder (12), a cylinder (112) is provided on the lower side of the upper cover plate (11), an inflation head (111) communicating with the cylinder (112) is provided on the upper side of the upper cover plate (11), a piston (14) is slidably connected inside the cylinder (112), the piston (14) includes a piston disc (143), and the piston disc (143) is connected by... The waist-shaped connecting block is fixedly connected to the drive plate (141). The drive plate (141) has a threaded hole on each of its left and right sides. A screw (142) is threaded into each of the two threaded holes. The upper end of the screw (142) is rotatably connected to the lower side of the upper cover plate (11), and the lower end of the screw (142) is rotatably connected to the upper side of the lower cover plate (13). The lower cover plate (13) is bolted to the lower end of the outer cylinder (12). Multiple filter grooves (131) are evenly distributed in the middle of the lower cover plate (13).

2. The sampling device for municipal wastewater treatment according to claim 1, characterized in that: The outer cylinder (12) is filled with butane gas.

3. The sampling device for municipal wastewater treatment according to claim 1, characterized in that: Both screws (142) pass through the lower cover plate (13). The lower outer end of the right screw (142) is rotatably connected to a worm gear (153). The outer side of the worm gear (153) is meshed with a worm (152). The worm (152) is connected to the output shaft of the motor (15) through a coupling (151). The lower side of the worm gear (153) is coaxially fixedly connected to a bevel gear (154). The bevel gear (154) and the bevel gear The two (155) bevel gears are meshed together. The second bevel gear (155) is rotatably mounted on the lower cover plate (13) via the connecting rod (156). The other end of the connecting rod (156) is fixedly mounted with the third bevel gear (157). The third bevel gear (157) is meshed with the fourth bevel gear (158). The first bevel gear (154) and the fourth bevel gear (158) are both coaxially fixedly connected with a hexagonal sleeve (1541) on the side away from the lower cover plate (13).

4. A sampling device for municipal wastewater treatment according to claim 3, characterized in that: Two hexagonal sleeves (1541) are slidably fitted with clutch sleeves (18) on their outer sides. The clutch sleeves (18) are hollow cylinders. The lower end of the clutch sleeves (18) is provided with a large hexagonal hole (182). The upper end of the large hexagonal hole (182) is connected to a small hexagonal hole (183) through a guide part three (185). The upper end of the small hexagonal hole (183) is provided with a guide part two (184). The large hexagonal hole (182) is slidably fitted on the outside of the hexagonal sleeves (1541) and has a clearance fit with the hexagonal sleeves (1541). The two screws (142) have opposite thread directions, and each of the two screws (142) has a round rod portion (1421) at one end near the lower cover plate (13). The upper end of the round rod portion (1421) is provided with a hexagonal prism portion (1423), and the end of the hexagonal prism portion (1423) is provided with a guide portion (1424). The round rod portion (1421) is rotatably disposed in the circular through hole (1542) in the center of the hexagonal sleeve (1541) and is clearance-fitted with the circular through hole (1542). The hexagonal prism portion (1423) rotatably abuts against the end of the hexagonal sleeve (1541), and the hexagonal prism portion (1423) is clearance-fitted with the small hexagonal hole (183) of the clutch sleeve (18).

5. A sampling device for municipal wastewater treatment according to claim 4, characterized in that: The lower end of the clutch sleeve (18) is provided with an annular groove (181), which is rotatably sleeved in both ends of the clutch rod (17). The clutch rod (17) is provided with an ear plate (171) on the side near the lower cover plate (13). An inclined sliding groove (172) is provided in the ear plate (171) laterally. A drive slide column (161) is slidably connected in the sliding groove (172). The drive slide column (161) is fixedly connected to the output end of the electric push rod (16), which is fixedly connected to the lower cover plate (13).

6. A sampling device for municipal wastewater treatment according to claim 5, characterized in that: A locking disc (192) is fixedly installed on the screw (142) on the side away from the worm gear (153). Multiple locking grooves are evenly distributed on the outer periphery of the locking disc (192). A locking head (191) is movably engaged in the locking groove. The locking head (191) is telescopically installed in the locking seat (19). The locking seat (19) is bolted to the lower cover plate (13).

7. A sampling device for municipal wastewater treatment according to claim 6, characterized in that: The sampling assembly (3) includes a bottom shell (31), and a bottom cover (32) is bolted to the upper end of the bottom shell (31). Two chucks (35) arranged vertically are rotatably connected to the lower center of the bottom cover (32). Multiple slots are evenly distributed on the outer periphery of the chucks (35). Multiple sampling bottles (36) are engaged in the slots. The bottom end of the sampling bottle (36) abuts against the inner bottom of the bottom shell (31), and the upper end of the sampling bottle (36) abuts against the lower side of the bottom cover (32). Multiple sampling bottles (36) slide in contact with the inner wall of the bottom shell (31). The bottom cover (32) is provided with a sampling hole (324) corresponding to the upper end of the sampling bottle (36).

8. A sampling device for municipal wastewater treatment according to claim 7, characterized in that: A gear two (341) is rotatably mounted on the upper side of the bottom cover (32) and coaxially fixedly connected to the chuck (35). The upper end of the gear two (341) is rotatably connected to the support frame (321), which is fixedly welded to the upper side of the bottom cover (32). A gear one (34) is meshed with the left side of the gear two (341). A ratchet groove disc (332) is coaxially fixedly connected to the upper side of the gear one (34). (332) The left side is engaged with the ratchet turntable (33). The lower side of the ratchet turntable (33) is rotatably connected to the bottom cover (32) through the support block (323). A hexagonal swivel (331) is coaxially fixedly connected to the upper end of the ratchet turntable (33). The hexagonal swivel (331) is coaxially arranged with the screw (142), and the upper end of the hexagonal swivel (331) contacts the lower end of the hexagonal prism part (1423) of the screw (142).

9. A sampling device for municipal wastewater treatment according to claim 8, characterized in that: Gear 2 (341) is meshed with gear 3 (342) on its right side. Gear 4 (343) is coaxially fixedly connected to the upper side of gear 3 (342). Gear 5 (344) is meshed with the right side of gear 4 (343). Gear 5 (344) is coaxially fixedly connected to the lower side of gear 5 (344). Gear 5 (344) is rotatably connected to the center of sampling hole (324). The lower side of cleaning turntable (345) abuts against sampling hole (324).

Images