A sewage sampling device

Abstract

The utility model relates to sewage detection sampling tool, concretely is a sewage sampling device, the utility model discloses the cover is stably covered through spring, and the opening of the cover is realized through the mode that waterproof motor drives transmission rod rotation, transmission rod rotation drives slider sliding, slider sliding opens the cover through the traction rope, guarantees the sampling of the sampling bucket to the sewage of specified depth, avoids the sewage of other depth in the sampling bucket water inlet or water outlet process to enter the sampling bucket, thereby conveniently sampling detection to the sewage of different depth, the setting of guide rope subassembly prevents the traction rope and the support pipe top end from being jammed, the setting of multiple guide rope subassembly on the outer wall of support pipe further improves the sliding stability of traction rope, the setting of the float plate can be stably floated on the water surface of the utility model, and staff need not hold the support pipe all the time, the utility model discloses reasonable in the structure design, and simple to use, convenient operation, motion stability.

Description

Technical Field

[0001] This utility model relates to a wastewater testing and sampling tool, specifically a wastewater sampling device. Background Technology

[0002] Dairy product manufacturing plants need to treat the wastewater they discharge. Wastewater sampling is a crucial step in the daily work of wastewater treatment. The purpose is to obtain representative wastewater samples in order to accurately analyze indicators such as wastewater composition and pollutant content, and to provide a scientific basis for subsequent wastewater treatment process adjustments and water quality monitoring.

[0003] Currently, traditional wastewater sampling devices have many problems. Some manual sampling devices, such as simple sampling buckets, require manual placement into the wastewater for sampling, which is not only inefficient, but also makes it difficult to ensure consistent sampling depth and location each time due to differences in operator skills, resulting in a lack of representativeness in the samples.

[0004] Wastewater composition and pollutant content vary at different depths, making it essential to sample and test wastewater at different depths. Existing sampling containers commonly come in two forms: one with a baffle at the bottom that automatically rises upon contact with water, allowing water to enter from the bottom; after sampling, the baffle automatically falls back down when the container is lifted, leaving water inside. The other type has a rotating, opening and closing cover at the top that automatically rises upon contact with water, allowing water to enter from the top; after sampling, the cover automatically closes when the container is lifted.

[0005] The above two types of sampling buckets will sample the sewage as soon as they come into contact with it, making it impossible to sample the sewage at different depths.

[0006] Currently, in order to sample wastewater at different depths, staff tie plastic bottles to wooden sticks to collect samples at different depths. However, the water inside the plastic bottles will flow during the insertion and removal of the bottles, so it cannot be guaranteed that the wastewater inside the plastic bottle after the wooden stick is inserted to a specific depth is the wastewater at that depth. Utility Model Content

[0007] The purpose of this invention is to provide a wastewater sampling device that can sample wastewater at a specified depth, and is simple to use and easy to operate.

[0008] To achieve the above technical effects, this utility model provides a wastewater sampling device including a sampling bucket, which comprises a bucket body, an outlet pipe, a top support plate, and a top cover. The outlet pipe is fixedly connected to the bottom side wall of the bucket body and extends out of the bucket body. One end of the outlet pipe extending out of the bucket body is fitted with an outlet hose, and the other end of the outlet hose extending out of the outlet pipe is clamped with a clamp. The top support plate is fixedly connected to the center of the top surface of the bucket body and is arranged along the diameter of the bucket body. Two top covers are provided, and the two top covers are respectively connected to the left and right sides of the top support plate by hinges. Both top covers cover the top surface of the bucket body. The device also includes a support pipe, a transmission rod, a slider, a waterproof motor, and a traction rope. The cross-section of the outer wall and the cross-section of the inner hole of the support pipe are both rounded rectangles. The support pipe is coaxial with the bucket body, and the lower part of the support pipe is fixedly connected to the bottom wall of the bucket body. The lower end of the support pipe passes through the bottom wall of the bucket body and is fixed to the top support plate. The top support plate passes through the water-resistant motor, which is fixedly connected to the bottom surface of the outer casing. The output shaft of the water-resistant motor is coaxial with the support tube. The outer wall of the transmission rod has an external thread, and the bottom surface of the transmission rod has a bottom hole. The transmission rod is rotatably connected to the inner hole of the support tube. The transmission rod and the support tube are coaxial. The output shaft of the water-resistant motor is inserted into the bottom hole and fixedly connected to the bottom hole by a key. Both the outer wall of the water-resistant motor output shaft and the inner wall of the bottom hole have keyways. The outer wall of the slider has a rounded rectangular cross-section. The center of the slider has a threaded hole I, which is connected to the external thread. The outer wall of the slider slides up and down in the inner hole of the support tube. Both top covers are fixedly connected to the top surface with traction ropes. The end of the traction rope not connected to the top cover is inserted into the support tube from the top end. The end of the traction rope inserted into the support tube is fixedly connected to the slider. The traction ropes fixedly connected to the two top covers are arranged symmetrically at 180°. A spring is connected between each top cover and the bottom wall of the inner casing.

[0009] Furthermore, the support tube is connected to a guide rope assembly, which includes a support, axle, and guide rope wheel. Two supports are provided, each with two shaft fixing holes. The rear ends of both supports are fixedly connected to the support tube, and the two shaft fixing holes on the two supports are coaxial. Two axles are provided, with each axle's ends fixedly inserted into the two coaxial shaft fixing holes of the two supports. The guide rope wheel is located between the two supports, and two guide rope wheels are provided. Each guide rope wheel has a shaft hole at its center, and the shaft holes of the two guide rope wheels are rotatably fitted onto the two axles. Each guide rope wheel has a rope groove on its outer wall, with an outer arc groove. The traction rope slides through the rope grooves of the two guide rope wheels. Each traction rope slides through three guide rope assemblies, which are respectively connected to the outer wall of the top end of the support tube, the top surface of the support tube, and the inner wall of the top end of the support tube.

[0010] Furthermore, multiple guide rope assemblies are fixedly connected to the outer wall of the support tube. The multiple guide rope assemblies are all located directly below the guide rope assembly connected to the outer wall of the top of the support tube. The multiple guide rope assemblies are linearly and evenly distributed along the axis of the support tube. The traction rope between the lowest guide rope assembly and the top cover is inclined.

[0011] Furthermore, each of the top covers is fixedly connected to a rope holder on its top surface. The rope holder is away from the axis of the barrel body and has a through hole II. One end of each traction rope is fixedly wrapped around the through hole II. The slider has two rope holes. The end of each traction rope that is not connected to the through hole II passes through the rope hole. After each traction rope passes through the rope hole, it is clamped with a rope locking clip.

[0012] Furthermore, each top cover has a spring bracket fixedly connected to its bottom surface, and two spring brackets are fixedly connected to the bottom wall of the barrel. The two spring brackets connected to the bottom wall of the barrel are respectively located directly below the spring brackets connected to the bottom surfaces of the two top covers. Each spring bracket has a through hole I. The spring is a common cylindrical helical tension spring with a round ring compression center. The hook at one end of each spring is hooked into the through hole I of the spring bracket connected to the bottom surface of the top cover, and the hook at the other end of each spring is hooked into the through hole I of the spring bracket connected to the bottom wall of the barrel.

[0013] Furthermore, a motor mounting base is connected between the outer bottom surface of the barrel and the waterproof motor. The motor mounting base includes an inner flange, an outer flange, and a vertical pipe. The inner flange is fixedly connected to the bottom end of the vertical pipe, and the outer flange is fixedly connected to the top end of the vertical pipe. The inner flange is located inside the vertical pipe, and the outer flange is located outside the vertical pipe. The inner flange and the waterproof motor are connected by screws. The inner flange has holes for screws to pass through, and the waterproof motor has screw holes for screw connection. The outer flange is fixedly connected to the outer bottom surface of the barrel by bolts and nuts. Both the outer flange and the bottom wall of the barrel have holes for bolts to pass through. After the bolt passes through the outer flange and the barrel, a nut is connected.

[0014] Furthermore, a floating plate is slidably connected to the outer wall of the support tube. The floating plate includes a circular plate portion and a connecting pipe portion. The connecting pipe portion is fixedly connected to the center of the top surface of the circular plate portion. The floating plate has a rectangular hole that penetrates the circular plate portion and the connecting pipe portion. The two inner walls of the rectangular hole that are parallel to each other have symmetrical grooves. The two inner walls of the rectangular hole with grooves are slidably connected to the two outer walls of the support tube. The guide rope assembly is located in the groove. There is a gap between the two parallel inner walls of the rectangular hole without grooves and the two outer walls of the support tube. The two parallel side walls of the rectangular hole without grooves have threaded holes II. Each threaded hole II is connected to a locking screw. The front end of the locking screw passes through the threaded hole II and abuts against the outer wall of the support tube. The floating plate material is rigid polyurethane foam, polyethylene foam, polystyrene foam, polyvinyl chloride foam, or phenolic resin foam.

[0015] Furthermore, a bottom support pipe is fixedly connected to the bottom surface of the barrel body. The bottom support pipe is coaxial with the barrel body, and the outer diameter of the bottom support pipe is equal to the outer diameter of the barrel body. The waterproof motor is located inside the bottom support pipe, and a wire groove is provided on the bottom side wall of the bottom support pipe. The power cord of the waterproof motor passes through the wire groove.

[0016] Furthermore, a retaining ring groove is provided on the top outer wall of the transmission rod, and a shaft end retaining ring is engaged in the retaining ring groove, with the shaft end retaining ring positioned above the slider.

[0017] Furthermore, a safety rope is fixedly wound around the circular plate portion, and the circular plate portion is provided with holes for the safety rope to be wound.

[0018] The beneficial effects of this utility model are: This invention utilizes a spring to stably close the top cover, and a waterproof motor drives a transmission rod to rotate, which in turn drives a slider to slide. The slider then pulls the top cover open via a traction rope. This system ensures that the sampling bucket can sample wastewater at a designated depth while preventing wastewater from other depths from entering the sampling bucket during water inflow or outflow, thus facilitating sampling and testing of wastewater at different depths. The guide rope assembly prevents the traction rope from jamming with the top of the support tube. Multiple guide rope assemblies on the outer wall of the support tube further improve the sliding stability of the traction rope. The floating plate allows the invention to float stably on the water surface, eliminating the need for operators to constantly hold the support tube. This invention features a reasonable structural design, is simple to use, easy to operate, and provides stable movement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the top cover of this utility model when it is closed; Figure 2 This is a partial structural diagram of the sampling bucket of this utility model; Figure 3 This utility model Figure 2 AA section view; Figure 4 This is a partial structural diagram of the connection between the bottom of the sampling bucket and the waterproof motor of this utility model; Figure 5 This is a schematic diagram of the structure of the motor mounting bracket of this utility model; Figure 6 This is a partial structural diagram of the spring connection of this utility model; Figure 7 This is a partial structural diagram of the top of the support tube of this utility model; Figure 8 This is a schematic diagram of the transmission rod of this utility model; Figure 9 This is a schematic diagram of the slider of this utility model; Figure 10 This is a partial structural schematic diagram of the guide rope assembly of this utility model; Figure 11 This utility model Figure 10 BB cross-sectional view; Figure 12 This is a partial structural diagram of the connection between the floating plate and the support pipe of this utility model; Figure 13 This utility model Figure 12 CC section view; Figure 14 This utility model Figure 13 DD section view Figure 15 This is a partial structural diagram of the top cover when the top cover of this utility model is opened.

[0020] In the diagram: 1. Sampling bucket; 101. Bucket body; 102. Water outlet pipe; 103. Top support plate; 104. Top cover; 2. Support pipe; 3. Transmission rod; 301. External thread; 302. Bottom hole; 303. Retaining ring groove; 4. Sliding block; 401. Threaded hole I; 402. Rope hole; 5. Motor mounting base; 501. Inner flange; 502. Outer flange; 503. Vertical pipe; 6. Waterproof motor; 7. Bottom support pipe; 701. Cable groove; 8. Water outlet hose; 9. Clamp; 10. Traction rope; 11. Rope guide assembly Components; 12. Floating plate; 1201. Circular plate part; 1202. Connecting pipe part; 1203. Rectangular hole; 1204. Groove; 1205. Threaded hole II; 13. Safety rope; 14. Spring hanger; 1401. Through hole I; 15. Spring; 16. Rope hanging seat; 1601. Through hole II; 17. Hinge; 18. Shaft end retaining ring; 19. Rope locking buckle clamp; 20. Support; 2001. Shaft fixing hole; 21. Wheel axle; 22. Rope guide wheel; 2201. Shaft hole; 2202. Rope groove; 23. Locking screw. Detailed Implementation

[0021] The existing sampling container 1 generally includes a container body 101, a water outlet pipe 102, a top support plate 103, and a top cover 104. The water outlet pipe 102 is fixedly connected to the bottom side wall of the container body 101 and extends out of the container body 101. A water outlet hose 8 is sleeved at one end of the water outlet pipe 102 extending out of the container body 101, and a clamp 9 is snapped at one end of the water outlet hose 8 extending out of the water outlet pipe 102. The top support plate 103 is fixedly connected to the center of the top surface of the container body 101 and is arranged along the diameter direction of the container body 101. Two top covers 104 are provided, and the two top covers 104 are respectively connected to the left and right sides of the top support plate 103 by hinges 17. Both top covers 104 cover the top surface of the container body 101. Figures 1-15As shown, this utility model discloses a wastewater sampling device comprising a support pipe 2, a transmission rod 3, a slider 4, a waterproof motor 6, and a traction rope 10. The outer wall cross-section and inner hole cross-section of the support pipe 2 are both rounded rectangles. The support pipe 2 is coaxial with the tank body 101. The lower part of the support pipe 2 is fixedly connected to the bottom wall of the tank body 101, and the lower end of the support pipe 2 passes through the bottom wall of the tank body 101. The support pipe 2 is fixed to a top support plate 103, and the upper part of the support pipe 2 passes through the top support plate 103. The waterproof motor 6 is fixedly connected to the outer bottom surface of the tank body 101, and the output shaft of the waterproof motor 6 is coaxial with the support pipe 2. The transmission rod 3 has an external thread 301 on its outer wall and a bottom hole 302 on its bottom surface. The transmission rod 3 is rotatably connected to the inner hole of the support pipe 2. The transmission rod 3 is coaxial with the support pipe 2, and the output shaft of the waterproof motor 6 is inserted into... The output shaft of the waterproof motor 6 is fixedly connected to the bottom hole 302 via a key. Keyways are provided on both the outer wall of the output shaft of the waterproof motor 6 and the inner wall of the bottom hole 302. The outer wall of the slider 4 has a rounded rectangular cross-section. A threaded hole I 401 is provided at the center of the slider 4. The threaded hole I 401 is connected to the external thread 301. The outer wall of the slider 4 slides up and down in the inner hole of the support tube 2. Traction ropes 10 are fixedly connected to the top surfaces of the two top covers 104. The end of the traction rope 10 not connected to the top cover 104 is inserted into the support tube 2 from the top end of the support tube 2. The end of the traction rope 10 inserted into the support tube 2 is fixedly connected to the slider 4. The traction ropes 10 fixedly connected to the two top covers 104 are arranged symmetrically at 180°. A spring 15 is connected between each top cover 104 and the inner bottom wall of the barrel 101.

[0022] When the sampling container 1 is not submerged in water, ensure that the top cover 104 is attached to the top surface of the container body 101. At this time, the slider 4 is located above the transmission rod 3. Submerge the sampling container 1 to the designated depth in the sewage. Since the top cover 104 is attached to the top surface of the container body 101, as... Figure 1 As shown, no water will enter the sampling bucket 1 during the process of reaching the designated depth. After the sampling bucket 1 reaches the designated depth, the operator controls the waterproof motor 6 to rotate. The rotation of the waterproof motor 6 drives the transmission rod 3 to rotate. The outer wall of the slider 4 slides up and down in the inner hole of the support tube 2, thus restricting the rotation of the slider 4. Therefore, the rotation of the transmission rod 3 will drive the slider 4 to slide up and down. When the slider 4 slides down, the slider 4 pulls the traction rope 10. The traction rope 10 pulls the top cover 104 to overcome the tension of the spring 15 and open the top cover 104. Figure 15 As shown, after the top cover 104 is opened, sewage is sampled at a specified depth. After sampling, the waterproof motor 6 is controlled to rotate, causing the slider 4 to slide upward. The upward sliding of the slider 4 releases the tension on the traction rope 10. As the slider 4 slides upward, the top cover 104 is reattached to the top surface of the barrel 101 under the action of the spring 15, thereby preventing the sewage in the sampling barrel 1 from mixing with sewage in other locations. After the top cover 104 is reattached, the present invention can be removed from the sewage to complete the sampling of sewage at a specific depth.

[0023] Since the top cover 104 relies on the tension of the spring 15 to stably cover the top surface of the tank 101, the selection and installation of the spring 15 must ensure that the spring 15 has a certain elastic deformation when the top cover 104 is stably covering the top surface of the tank 101. At the same time, it must also ensure that when the top cover 104 is fully opened, the deformation of the spring 15 is elastic and will not be damaged by excessive stretching. The fully open angle of the top cover 104 is generally 90°. When calculating the length specification of the spring 15, it can be calculated based on the fully open angle of the top cover 104 being 90°. However, in actual sewage sampling operations, the top cover 104 generally does not need to be opened to 90°, because after the top cover 104 rotates, as long as there is a gap between it and the top surface of the tank 101, sewage can enter the sampling tank 1. In actual use, the rotation angle of the top cover 104 generally does not exceed 30°.

[0024] Since it is inconvenient to observe the opening status of the top cover 104 and the water intake status of the sampling bucket 1 while it is submerged in sewage, the opening of the top cover 104 and the intake of a large volume of water from the sampling bucket 1 are generally ensured by controlling the working time of the waterproof motor 6 and the residence time of the sampling bucket 1 in the sewage. Specifically, the method is as follows: control the working time of the waterproof motor 6 on the ground and record the opening and closing time of the top cover 104. When the top cover 104 needs to be opened or closed in the sewage, add about 10% margin to the time on the ground. Record the time when the sampling bucket 1 is completely filled with sewage on the water surface. The water intake time in the sewage is calculated by adding about 10% margin to the time when the water surface is filled with sewage.

[0025] Since the top cover 104 should be attached to the top surface of the barrel 101 to prevent sewage from entering the sampling barrel 1, a sealing gasket can be glued to the bottom surface of the top cover 104 in actual use, so that the top cover 104 has a certain degree of sealing when it is attached to the top surface of the barrel 101. Considering that the use of the sealing gasket requires a certain pre-tightening force, the selection of the spring 15 should be able to meet the pre-tightening force requirements.

[0026] Waterproof motor 6 has wide applications in industrial fields. It can operate stably underwater. In this embodiment, a DC waterproof planetary geared motor is selected. The rated voltage of waterproof motor 6 in this embodiment is 24V, the no-load speed is 40RPM, the no-load current is 52A, the rated load speed is 32RPM, the rated load current is 4A, the rated load torque is 55Kg, and the rated load power is 60W. The power cord of waterproof motor 6 uses a waterproof interface. The drive power supply and controller of waterproof motor 6 can both be located on the ground and connected via the power cord. The power cord being in sewage will not affect the normal operation of waterproof motor 6.

[0027] Since the sampling bucket 1 needs to be submerged to a certain depth underwater, the support pipe 2 needs to extend a certain height above the sampling bucket 1. Generally, the length of the support pipe 2 extending beyond the maximum sewage sampling depth is required to ensure that the top of the support pipe 2 can be exposed above the water surface when the sampling bucket 1 is at the maximum sewage sampling depth. Correspondingly, the transmission rod 3 should also generally be approximately the same length as the support pipe 2. Considering that an excessively long traction rope 10 will affect the stability of use, the slider 4 is generally allowed to slide up and down at the top of the transmission rod 3 and the support pipe 2, thereby reducing the unnecessary length of the traction rope 10 inside the support pipe 2.

[0028] In actual use, in order to facilitate observation of the sinking depth of the sampling bucket 1, a scale line can be set on the outer wall of the support tube 2 and the height can be marked. The starting height position of the scale line should be the center or bottom of the height of the sampling bucket 1.

[0029] A guide rope assembly 11 is connected to the support pipe 2. The guide rope assembly 11 includes a support 20, a wheel axle 21, and a guide rope wheel 22. Two supports 20 are provided, each with two shaft fixing holes 2001. The rear ends of both supports 20 are fixedly connected to the support pipe 2. The two shaft fixing holes 2001 on the two supports 20 are coaxial. Two wheel axles 21 are provided, with both ends of each wheel axle fixedly inserted into the two coaxial shaft fixing holes 2001 of the two supports 20. The guide rope wheel 22 is located between the two supports 20. There are two rope pulleys 22, and each rope pulley 22 has a shaft hole 2201 at its center. The shaft holes 2201 of the two rope pulleys 22 are respectively rotatably sleeved on two wheel axles 21. Each rope pulley 22 has a rope groove 2202 on its outer wall. The outer arc groove of the rope groove 2202 allows the traction rope 10 to slide through the rope groove 2202 of the two rope pulleys 22. Each traction rope 10 slides through three rope guide assemblies 11. The three rope guide assemblies 11 are respectively connected to the outer wall of the top end of the support tube 2, the top surface of the support tube 2, and the inner wall of the top end of the support tube 2.

[0030] The guide rope assembly 11 is designed to prevent the traction rope 10 from getting stuck at the top of the support tube 2, ensuring the smooth sliding of the traction rope 10. Each guide rope assembly 11 limits the traction rope 10 through two guide rope wheels 22, further ensuring the smooth sliding of the traction rope 10. At the same time, the rope groove 2202 is designed to cooperate with the traction rope 10 to prevent the traction rope 10 from disengaging from the guide rope wheel 22.

[0031] Multiple guide rope assemblies 11 are fixedly connected to the outer wall of the support tube 2. The multiple guide rope assemblies 11 are all located directly below the guide rope assembly 11 connected to the top outer wall of the support tube 2. The multiple guide rope assemblies 11 are linearly and evenly distributed along the axis of the support tube 2. The traction rope 10 between the lowest guide rope assembly 11 and the top cover 104 is inclined.

[0032] Since the support tube 2 has a certain height, the multiple guide rope assemblies 11 on the outer wall of the support tube 2 further improve the sliding stability of the traction rope 10.

[0033] The traction rope 10 between the lowest guide rope assembly 11 and the top cover 104 is inclined to ensure that the traction rope 10 can smoothly pull open the top cover 104.

[0034] Each top cover 104 has a rope hanging seat 16 fixedly connected to its top surface. The rope hanging seat 16 is away from the axis of the barrel body 101. The rope hanging seat 16 has a through hole II 1601. One end of each traction rope 10 is fixedly wrapped in the through hole II 1601. The slider 4 has two rope holes 402. The end of each traction rope 10 that is not connected to the through hole II 1601 passes through the rope hole 402. After each traction rope 10 passes through the rope hole 402, it is clamped with a rope locking buckle 19.

[0035] The rope holder 16 is designed to connect the traction rope 10. The fact that the rope holder 16 is far from the axis of the barrel 101 also helps to increase the torque of the traction rope 10 in pulling open the top cover 104.

[0036] Each top cover 104 has a spring hanger 14 fixedly connected to its bottom surface. Two spring hangers 14 are fixedly connected to the bottom wall of the inner wall of the barrel 101. The two spring hangers 14 connected to the bottom wall of the barrel 101 are respectively located directly below the spring hangers 14 connected to the bottom surfaces of the two top covers 104. Each spring hanger 14 has a through hole I 1401. The spring 15 is a common cylindrical helical tension spring with a round ring compression center. The hook at one end of each spring 15 is hooked into the through hole I 1401 of the spring hanger 14 connected to the bottom surface of the top cover 104, and the hook at the other end of each spring 15 is hooked into the through hole I 1401 of the spring hanger 14 connected to the bottom wall of the barrel 101.

[0037] The spring bracket 14 is provided for connecting the spring 15.

[0038] A motor mounting base 5 is connected between the outer bottom surface of the barrel 101 and the waterproof motor 6. The motor mounting base 5 includes an inner flange 501, an outer flange 502, and a vertical pipe 503. The inner flange 501 is fixedly connected to the bottom end of the vertical pipe 503, and the outer flange 502 is fixedly connected to the top end of the vertical pipe 503. The inner flange 501 is located inside the vertical pipe 503, and the outer flange 502 is located outside the vertical pipe 503. The inner flange 501 and the waterproof motor 6 are connected by screws. The inner flange 501 has holes for screws to pass through, and the waterproof motor 6 has screw holes for screw connection. The outer flange 502 is fixedly connected to the outer bottom surface of the barrel 101 by bolts and nuts. Both the outer flange 502 and the bottom wall of the barrel 101 have holes for bolts to pass through. After the bolt passes through the outer flange 502 and the barrel 101, a nut is connected to it.

[0039] The motor mounting bracket 5 facilitates the connection between the waterproof motor 6 and the barrel body 101.

[0040] A floating plate 12 is slidably connected to the outer wall of the support tube 2. The floating plate 12 includes a circular plate portion 1201 and a connecting pipe portion 1202. The connecting pipe portion 1202 is fixedly connected to the center of the top surface of the circular plate portion 1201. The floating plate 12 has a rectangular hole 1203 that penetrates the circular plate portion 1201 and the connecting pipe portion 1202. The two inner walls of the rectangular hole 1203 are symmetrically provided with grooves 1204. The two inner walls of the rectangular hole 1203 with grooves 1204 are slidably connected to the two outer walls of the support tube 2. The guide rope assembly 11 is provided in the groove. Within 1204, there are gaps between the two parallel inner walls of the rectangular hole 1203 (without grooves) and the two outer walls of the support tube 2. Threaded holes II 1205 are provided on the two parallel side walls of the rectangular hole 1203 (without grooves). Each threaded hole II 1205 is connected to a locking screw 23, the front end of which passes through the threaded hole II 1205 and abuts against the outer wall of the support tube 2. The floating plate 12 is made of rigid polyurethane foam, polyethylene foam, polystyrene foam, polyvinyl chloride foam, or phenolic resin foam.

[0041] The floating plate 12 allows the present invention to float stably on the water surface. Loosen the two locking screws 23 to adjust the height of the floating plate 12 on the support pipe 2. After adjusting it to the correct position, tighten the two locking screws 23 again. After the sampling bucket 1 extends to the specified depth of the sewage, the floating plate 12 will float on the water surface and will not sink again, so the staff does not need to hold the support pipe 2 all the time.

[0042] The groove 1204 provides space for the guide rope assembly 11 and the traction rope 10.

[0043] A bottom support tube 7 is fixedly connected to the bottom surface of the barrel 101. The bottom support tube 7 is coaxial with the barrel 101. The outer diameter of the bottom support tube 7 is equal to the outer diameter of the barrel 101. The waterproof motor 6 is located inside the bottom support tube 7. A wire groove 701 is provided on the bottom side wall of the bottom support tube 7. The power cord of the waterproof motor 6 passes through the wire groove 701.

[0044] The bottom support pipe 7 is designed to prevent the waterproof motor 6 from colliding with the bottom or wall of the sewage tank, and also to facilitate the vertical placement of this utility model on the ground.

[0045] The transmission rod 3 has a retaining ring groove 303 on its top outer wall. A shaft end retaining ring 18 is engaged in the retaining ring groove 303. The shaft end retaining ring 18 is located above the slider 4.

[0046] The shaft end retaining ring 18 limits the upward sliding of the slider 4, preventing the slider 4 from disengaging from the transmission rod 3.

[0047] A safety rope 13 is fixedly wound around the circular plate portion 1201, and the circular plate portion 1201 is provided with a hole for the safety rope 13 to be wound.

[0048] The safety rope 13 makes it easy for staff to pull the utility model back to the edge of the sewage tank, preventing the utility model from drifting to the center of the sewage tank and becoming difficult to retrieve.

[0049] This invention uses a spring 15 to stably close the top cover 104, and a waterproof motor 6 drives a transmission rod 3 to rotate, which in turn drives a slider 4 to slide. The slider 4 then pulls the top cover 104 open via a traction rope 10. This method ensures that the sampling bucket 1 can sample wastewater at a specified depth, while preventing wastewater from other depths from entering the sampling bucket 1 during the water inlet or outlet process. This facilitates sampling and testing of wastewater at different depths. The invention has a reasonable structural design, is simple to use, easy to operate, and has stable movement.

Claims

1. A wastewater sampling device, comprising a sampling bucket (1), the sampling bucket (1) comprising a bucket body (101), a water outlet pipe (102), a top support plate (103) and a top cover (104), the water outlet pipe (102) being fixedly connected to the bottom side wall of the bucket body (101), the water outlet pipe (102) extending out of the bucket body (101), and a water outlet hose (8) being sleeved at one end of the water outlet pipe (102) extending out of the bucket body (101), the water outlet hose (8) extending out One end of the water outlet pipe (102) is clamped with a clamp (9). The top support plate (103) is fixedly connected to the center of the top surface of the barrel (101). The top support plate (103) is set along the diameter direction of the barrel (101). There are two top covers (104). The two top covers (104) are respectively connected to the left and right sides of the top support plate (103) by hinges (17). Both top covers (104) are covered on the top surface of the barrel (101). The feature is that: The system includes a support tube (2), a transmission rod (3), a slider (4), a waterproof motor (6), and a traction rope (10). The cross-section of the outer wall and the inner hole of the support tube (2) are both rounded rectangles. The support tube (2) is coaxial with the barrel body (101). The lower part of the support tube (2) is fixedly connected to the bottom wall of the barrel body (101). The lower end of the support tube (2) passes through the bottom wall of the barrel body (101). The support tube (2) is fixed on the top support plate (103). The upper part of the support tube (2) passes through the top support plate (103). The waterproof motor (6) is fixedly connected to the outer bottom surface of the barrel body (101). The output shaft of the waterproof motor (6) is coaxial with the support tube (2). The outer wall of the transmission rod (3) is provided with an external thread (301). The bottom surface of the transmission rod (3) is provided with a bottom hole (302). The transmission rod (3) is rotatably connected in the inner hole of the support tube (2). The transmission rod (3) is coaxial with the support tube (2). The output shaft of the waterproof motor (6) is inserted into the bottom hole (302). Inside 302), the output shaft of the waterproof motor (6) is fixedly connected to the bottom hole (302) by a key. The outer wall of the output shaft of the waterproof motor (6) and the inner wall of the bottom hole (302) are both provided with keyways. The outer wall of the slider (4) has a cross-section of rounded rectangle. The center of the slider (4) is provided with threaded hole I (401). Threaded hole I (401) is connected to the external thread (301). The outer wall of the slider (4) is slidably connected to the inner hole of the support tube (2). The top surfaces of the two top covers (104) are fixedly connected with traction ropes (10). The end of the traction rope (10) not connected to the top cover (104) is inserted into the support tube (2) from the upper end of the support tube (2). The end of the traction rope (10) inserted into the support tube (2) is fixedly connected to the slider (4). The traction ropes (10) fixedly connected to the two top covers (104) are arranged symmetrically at 180°. A spring (15) is connected between each top cover (104) and the inner bottom wall of the barrel (101).

2. The wastewater sampling device according to claim 1, characterized in that: The support tube (2) is connected to a guide rope assembly (11). The guide rope assembly (11) includes a support (20), a wheel axle (21), and a guide rope wheel (22). There are two supports (20), each of which has two shaft fixing holes (2001). The rear ends of the two supports (20) are fixedly connected to the support tube (2). The two shaft fixing holes (2001) on the two supports (20) are coaxial. There are two wheel axles (21). The two ends of each wheel axle (21) are respectively fixedly inserted into the two coaxial shaft fixing holes (2001) of the two supports (20). The guide rope wheel (22) is located between the two supports (20). There are two guide rope wheels (22), each guide rope wheel (22) has a shaft hole (2201) at its center. The shaft holes (2201) of the two guide rope wheels (22) are respectively rotatably sleeved on two wheel axles (21). Each guide rope wheel (22) has a rope groove (2202) on its outer wall. The rope groove (2202) has an outer arc groove. The traction rope (10) slides through the rope groove (2202) of the two guide rope wheels (22). Each traction rope (10) slides through three guide rope assemblies (11). The three guide rope assemblies (11) are respectively connected to the outer wall of the top part of the support tube (2), the top surface of the support tube (2), and the inner wall of the top part of the support tube (2).

3. The wastewater sampling device according to claim 2, characterized in that: Multiple guide rope assemblies (11) are fixedly connected to the outer wall of the support tube (2). The multiple guide rope assemblies (11) are all located directly below the guide rope assembly (11) connected to the outer wall of the top part of the support tube (2). The multiple guide rope assemblies (11) are linearly and evenly distributed along the axis of the support tube (2). The traction rope (10) between the lowest guide rope assembly (11) and the top cover (104) is inclined.

4. A wastewater sampling device according to any one of claims 1-3, characterized in that: Each of the top covers (104) is fixedly connected to a rope holder (16) on its top surface. The rope holder (16) is away from the axis of the barrel (101). The rope holder (16) is provided with a through hole II (1601). One end of each traction rope (10) is fixedly wrapped in the through hole II (1601). The slider (4) is provided with two rope holes (402). The end of each traction rope (10) that is not connected to the through hole II (1601) passes through the rope hole (402). After each traction rope (10) passes through the rope hole (402), it is clamped with a locking rope buckle (19).

5. A wastewater sampling device according to claim 4, characterized in that: Each top cover (104) is fixedly connected to a spring hanger (14) on its bottom surface. Two spring hangers (14) are fixedly connected to the bottom wall of the barrel (101). The two spring hangers (14) connected to the bottom wall of the barrel (101) are respectively located directly below the spring hangers (14) connected to the bottom surfaces of the two top covers (104). Each spring hanger (14) is provided with a through hole I (1401). The spring (15) is a common cylindrical spiral tension spring with a round ring pressing center. The hook at one end of each spring (15) is hooked in the through hole I (1401) of the spring hanger (14) connected to the bottom surface of the top cover (104). The hook at the other end of each spring (15) is hooked in the through hole I (1401) of the spring hanger (14) connected to the bottom wall of the barrel (101).

6. A wastewater sampling device according to any one of claims 1-3 or 5, characterized in that: A motor mounting base (5) is connected between the outer bottom surface of the barrel body (101) and the waterproof motor (6). The motor mounting base (5) includes an inner flange (501), an outer flange (502), and a vertical pipe (503). The inner flange (501) is fixedly connected to the bottom end of the vertical pipe (503), and the outer flange (502) is fixedly connected to the top end of the vertical pipe (503). The inner flange (501) is located inside the vertical pipe (503), and the outer flange (502) is located outside the vertical pipe (503). On the side, the inner flange (501) is connected to the waterproof motor (6) by screws. The inner flange (501) has holes for screws to pass through, and the waterproof motor (6) has screw holes for screw connection. The outer flange (502) is fixedly connected to the bottom surface of the barrel (101) by bolts and nuts. Both the outer flange (502) and the bottom wall of the barrel (101) have holes for bolts to pass through. After the bolt passes through the outer flange (502) and the barrel (101), a nut is connected.

7. A wastewater sampling device according to any one of claims 2 or 3, characterized in that: A floating plate (12) is slidably connected to the outer wall of the support tube (2). The floating plate (12) includes a circular plate part (1201) and a connecting pipe part (1202). The connecting pipe part (1202) is fixedly connected to the center of the top surface of the circular plate part (1201). The floating plate (12) is provided with a rectangular hole (1203). The rectangular hole (1203) passes through the circular plate part (1201) and the connecting pipe part (1202). The two inner walls of the rectangular hole (1203) are symmetrically provided with grooves (1204) on two parallel inner walls. The two inner walls of the rectangular hole (1203) with grooves (1204) are slidably connected to the two outer walls of the support tube (2). The guide rope assembly (1 1) The rectangular hole (1203) without the groove (1204) is provided with a gap between the two parallel inner walls of the rectangular hole (1203) without the groove (1204) and the two outer walls of the support tube (2). The two parallel side walls of the rectangular hole (1203) without the groove (1204) are provided with threaded holes II (1205). Each threaded hole II (1205) is connected with a locking screw (23). The front end of the locking screw (23) passes through the threaded hole II (1205) and then abuts against the outer wall of the support tube (2). The floating plate (12) is made of rigid polyurethane foam, polyethylene foam, polystyrene foam, polyvinyl chloride foam or phenolic resin foam.

8. A wastewater sampling device according to claim 1, characterized in that: A bottom support tube (7) is fixedly connected to the bottom surface of the barrel (101). The bottom support tube (7) is coaxial with the barrel (101). The outer diameter of the bottom support tube (7) is equal to the outer diameter of the barrel (101). The waterproof motor (6) is located inside the bottom support tube (7). A wire groove (701) is provided on the bottom side wall of the bottom support tube (7). The power cord of the waterproof motor (6) passes through the wire groove (701).

9. A wastewater sampling device according to claim 1, characterized in that: The transmission rod (3) has a retaining ring groove (303) on its top outer wall. A shaft end retaining ring (18) is engaged in the retaining ring groove (303) and is located above the slider (4).

10. A wastewater sampling device according to claim 7, characterized in that: A safety rope (13) is fixedly wound around the circular plate (1201), and the circular plate (1201) is provided with a hole for the safety rope (13) to be wound around.

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