A device for stratified sampling of a body of water

Abstract

The application discloses a device for layered sampling of water body, comprising a sampling box, which is provided with multiple layers of cavities, each of which is provided with a water inlet and a water outlet, and a conduit is connected to the water inlet of the cavity, the conduit is sleeved with a pipe cover, a through hole is formed in the side wall of the pipe cover, the sampling box is slidingly connected with a push rod, a transmission member is arranged between the push rod and the bottom surface of the sampling box, the pipe cover of the conduit of each cavity is fixedly connected with the push rod, the left and right sides of the sampling box are fixedly connected with water storage tanks respectively, an opening is formed in the lower bottom surface of the water storage tank, a vertical pull rod is slidingly connected with the water storage tank, the pull rod passes through the opening in the lower bottom surface of the water storage tank, a transmission member is arranged between the pull rod and the upper bottom surface of the water storage tank, a baffle is fixedly connected to the bottom end of the pull rod, and a connecting pipe is arranged on the water storage tank close to the bottom surface thereof. After each layer of cavity of the water storage tank is immersed in water, the water in the river layer where each cavity is located can be collected at one time, and the device does not need to be used for multiple times, and is more convenient.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering facilities, and more particularly to a device for stratified water sampling. Background Technology

[0002] Water sampling is a technique that involves collecting water samples from polluted water bodies and obtaining pollution data through analysis and measurement. The core of the technique is to ensure the representativeness of the water samples. The main purposes of sampling include assessing water quality, identifying pollution sources, trend analysis, and risk assessment.

[0003] When sampling, the container is directly placed into the river to be tested, and an appropriate amount of water is taken for testing. However, when sampling water at different depths in the river, the container is first submerged to any depth in the river to take a certain amount of water. After the container is retrieved from the river, the water in the container is poured into a collection box for subsequent testing. Then, the container is submerged to any other depth in the river to take samples, and so on, taking samples at different depths in the river. The above method requires repeatedly inserting or removing the container from the river, which is more troublesome and laborious. Summary of the Invention

[0004] The purpose of this invention is to provide a water stratification sampling device, which has the advantage of being able to collect and use water at different depths in a river in a single operation.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A water stratification sampling device includes a sampling box with vertically arranged multi-layered chambers. A mounting base is fixedly connected to the top and bottom of the sampling box. Each chamber has an inlet and an outlet. A cover is detachably connected to the outlet of each chamber. An L-shaped conduit is connected to the inlet of each chamber, and the conduit is bent upwards. A cap, which is a hollow cylinder with a closed top and an open bottom, is fitted over the conduit opening. A through hole is provided on the side wall of the cap. Connecting pieces are connected to the mounting base and the side of the bottom surface of the sampling box. The device also includes a push rod that vertically passes through two connecting pieces and is slidably connected to them. A space is provided between the push rod and the connecting piece on the top surface of the sampling box. Equipped with a transmission component, the caps of the conduits in each chamber are fixedly connected to the push rods via connecting rods. Water tanks are fixedly connected to the left and right sides of the sampling box, respectively. Openings are provided on the bottom surfaces of the two water tanks. Vertical pull rods pass through the water tanks, passing through the openings on the top and bottom surfaces of the water tanks. The pull rods are slidably connected to the water tanks. A transmission component is installed between the upper end of the pull rod and the upper surface of the water tank. A baffle is fixedly connected to the bottom end of the pull rod. Two vertical guide rods are fixedly connected to the baffle. The guide rods pass through the bottom surface of the water tank and are slidably connected to the water tank. A connecting pipe for connecting a water pump is provided on the side of the water tank near its bottom surface.

[0006] Using the above technical solution, before the sampling box is placed into the river, the bottom of the cap of the conduit in each chamber contacts the end face of the conduit opening, and the side wall of the conduit blocks the through hole on the side wall of the cap. Connect each water tank to a water pump. During connection, connect a delivery pipe to the connecting pipe of the water tank, and then connect the delivery pipe to the water pump. The water pump is connected to a drain pipe. Extend the bottom of the sampling box into the river channel. Water enters the water tank through the opening at the bottom, causing the sampling box and water tank to sink. After the uppermost chamber of the sampling box sinks into the river channel, a transmission mechanism drives a push rod to move vertically upwards. The moving push rod pulls the cap of the conduit in each chamber upwards, separating the top bottom of the cap from the end face of the conduit to which it is connected. The through hole on the side wall of the cap moves to a position where it is not opposite to the side wall of the pipe. Water from the river channel layer in each chamber enters the chamber through the through hole of the cap and the conduit. After a certain amount of water is collected in the chamber, the transmission mechanism drives the push rod to descend, which in turn lowers each cap. The pipe cap blocks the opening of the connecting pipe, and the side wall of the connecting pipe blocks the through hole of the pipe cap. The pull rod is driven to rise through the transmission mechanism between the pull rod and the water tank. The pull rod drives the baffle connected to it to rise, so that the baffle blocks the opening at the bottom of the water tank. Then the water pump pumps out all the water in the water tank, increasing the buoyancy of the water tank and the overall buoyancy of the sampling device, making it easier to pull it out of the river. That is, it is easier to pull up the sampling box. After the sampling box is pulled out of the river, the lid of the outlet of each chamber is opened in turn, so that the water sample collected in each chamber in its respective river layer flows out and flows into the detection container. Then the water at different layers of the river is sampled. Do not throw the sampling container into the water repeatedly. Let the container sink to different depths in the river to collect water at different depths of the river, which is more convenient.

[0007] Preferably, a rubber plug is fixedly connected to the inner side of the bottom of the tube cap.

[0008] Using the above technical solution, the transmission mechanism drives the push rod to descend, and the push rod drives the pot lid to descend, so that the lid blocks the opening of the pipe connected to it. The side wall of the pipe blocks the through hole of the lid, and at the same time, the lid drives the plug inside to penetrate into the pipe opening of the pipe, blocking the opening and increasing the sealing of the opening.

[0009] Preferably, the transmission component includes a nut, and the upper ends of the push rod and the pull rod are respectively threaded. The connecting plates of the end face of the water storage tank and the upper end face of the sampling box are respectively rotatably connected with nuts. The upper end of the push rod passes through the nut on the connecting plate it passes through, and the push rod is threadedly connected to the nut. The pull rod passes through the nut on the upper end face of the water storage tank, and the pull rod is threadedly connected to the nut it passes through.

[0010] Using the above technical solution, tightening the nut connected to the push rod causes the push rod to rise or fall, which in turn causes the pipe cover to rise or fall, opening or closing the pipe connected to the pipe cover. Similarly, tightening the nut connected to the pull rod causes the baffle to rise or fall via the pull rod, contacting or separating the baffle from the bottom of the water tank, opening or closing the opening at the bottom of the water tank.

[0011] Preferably, a sealing ring is fixedly connected to the lower end of the pull rod near the baffle. The diameter of the sealing ring is slightly larger than the diameter of the bottom opening of the water tank, and the sealing ring is made of elastic material.

[0012] With the above technical solution, when the baffle blocks the bottom opening of the water tank, the sealing ring on the pull rod passes into the bottom opening of the water tank, increasing the sealing of the bottom of the water tank.

[0013] Preferably, the outer wall of the nut is provided with friction grooves.

[0014] By adopting the above technical solution, the friction between the hand and the nut is increased, preventing slippage when tightening the nut. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of the embodiment; Figure 2 This is a front view of an embodiment; Figure 3 This is a side view of an embodiment; Figure 4 This is a top view of an embodiment; Figure 5 This is a rear view of an embodiment; Figure 6 This is a sectional view along line AA; Figure 7 This is a cross-sectional view along the BB direction.

[0016] Reference numerals: 1. Sampling box; 2. Chamber; 3. Outlet; 4. Box cover; 5. Guide tube; 6. Pipe cap; 7. Through hole; 8. Connecting piece; 9. Push rod; 10. Connecting rod; 11. Water storage tank; 12. Pull rod; 13. Baffle; 14. Guide rod; 15. Connecting pipe; 16. Rubber stopper; 17. Nut; 18. Sealing ring; 19. Reinforcing rib. Detailed Implementation

[0017] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of the present invention should be considered within the protection scope of the present invention. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the protection scope of the present invention.

[0018] See Figure 1 , Figure 3 and Figure 6 A water stratification sampling device includes a sampling box 1, which has vertically arranged multi-layered chambers 2. Each chamber 2 has an inlet and an outlet 3. The outlet 3 of each chamber 2 is detachably connected to a box cover 4. An L-shaped conduit 5 is connected to the inlet of each chamber 2. The conduit 5 is bent upwards, and a tube cap 6 is fitted over the end of the conduit 5. The tube cap 6 is a hollow cylinder with a closed upper end and an open lower end. A rubber stopper 16 is fixedly connected to the inner side of the bottom of the tube cap 6, and a through hole 7 is provided on the side wall of the tube cap 6.

[0019] See Figure 1 , Figure 3 and Figure 6 The sampling box 1 has connecting plates 8 connected to its upper and lower ends. It also includes a push rod 9, which vertically passes through the two connecting plates 8 and is slidably connected to them. A nut 17 is rotatably connected to the connecting plate on the upper end of the sampling box 1. The outer wall of the nut 17 has friction grooves. The upper end of the push rod 9 passes through the nut 17 on the connecting plate it passes through, increasing friction between the hand and the nut 17 and preventing slippage when turning it. The upper end of the push rod 9 is threaded, and the push rod 9 is threadedly connected to the nut 17 on the connecting plate. Multiple connecting rods 10 are fixedly connected to the upper part of the push rod 9, and reinforcing ribs 19 are fixedly connected between the push rod 9 and the connecting rods 10. The cap 6 of the conduit 5 in each chamber 2 is fixedly connected to the push rod 9 via the connecting rods 10.

[0020] See Figure 2 , Figure 4 , Figure 5 and Figure 7 A water storage tank 11 is fixedly connected to the left and right sides of the sampling box 1. The top cover 4 of the water storage tank 11 has a vent hole, and the bottom surfaces of both water storage tanks 11 have openings. A vertical pull rod 12 passes through the water storage tank 11, passing through the openings on the top and bottom surfaces of the water storage tanks 11. The pull rod 12 is slidably connected to the water storage tank 11, and a thread is provided near its upper end. A nut 17 is rotatably connected to the top surface of the water storage tank 11, and the pull rod 12 passes through the nut 17 on the top surface of the water storage tank 11, with the pull rod 12 threadedly connected to the nut 17 it passes through. A baffle 13 is fixedly connected to the bottom end of the pull rod 12. Two vertical guide rods 14 are fixedly connected to the baffle 13. The guide rods 14 pass through the bottom surface of the water tank 11 and are slidably connected to the water tank 11. A sealing ring 18 is fixedly connected to the lower end of the pull rod 12 near the baffle 13. The diameter of the sealing ring 18 is slightly larger than the diameter of the bottom opening of the water tank 11, and the sealing ring 18 is made of elastic material. A connecting pipe 15 for connecting a water pump is provided on the side of the water tank 11 near its bottom surface.

[0021] Working principle: Before the sampling box 1 is placed in the river, the bottom of the cap 6 of the conduit 5 in each chamber 2 contacts the end face of the conduit 5 opening. The side wall of the conduit 5 blocks the through hole 7 on the side wall of the cap 6. The rubber plug 16 inside the cap 6 is embedded in the conduit 5, blocking the opening of the conduit 5. A water pump is then connected to each water tank 11. During connection, a delivery pipe is connected to the connecting pipe 15 of the water tank 11, and then the delivery pipe is connected to the water pump. The water pump is connected to a drain pipe.

[0022] The water sampling device is inserted into the river channel, with the bottoms of the water storage tank 11 and sampling box 1 submerged first. Water enters the water storage tank 11 through the opening at the bottom, causing the sampling box 1 and water storage tank 11 to sink. After the uppermost chamber 2 of the sampling box 1 sinks into the river channel, the nut 17 on the connecting piece 8 is turned. The nut 17 drives the push rod 9 connected to it to move upward. The moving push rod 9 pulls the cap 6 of the conduit 5 of each chamber 2 upward, causing the upper bottom of the cap 6 to separate from the end face of the conduit 5 connected to it. The through hole 7 on the side wall of the cap 6 moves to a position where it is not opposite to the side wall of the conduit, and the plug inside the cap 6 leaves the inside of the conduit 5. Water from the river channel layer where each chamber 2 is located enters the chamber 2 through the through hole 7 of the cap 6 and the conduit 5.

[0023] After chamber 2 collects a certain amount of water, the nut 17 on the connecting piece 8 is turned in the reverse direction. Nut 17 causes the push rod 9 to descend, which in turn causes each pipe cap 6 to descend, blocking the opening of the connecting tube 5. The side wall of the connecting tube 5 blocks the through hole 7 of the pipe cap 6, and the plug of the pipe cap 6 is inserted into the opening of the connecting tube 5. Then, the nut 17 on the water storage tank 11 is turned, causing the pull rod 12 to rise. The pull rod 12 causes the baffle 13 connected to it to rise, and the sealing ring 18 at the bottom of the pull rod 12 is embedded in the opening at the bottom of the water storage tank 11. The baffle 13 then blocks the opening at the bottom of the water storage tank 11. Then, the water pump pumps out all the water from the water storage tank 11 and discharges it into the river through the drain pipe. The buoyancy of the water storage tank 11 increases, and the buoyancy of the sampling device as a whole increases, making it easier to pull it out of the river, i.e., it is easier to pull up the sampling box 1. After pulling the sampling box 1 out of the river, open the lid 4 of the outlet 3 of each chamber 2 in sequence, allowing the water samples collected in their respective river layers to flow out and into the testing container. Then, test the water at different layers of the river. Avoid repeatedly throwing the sampling container into the water; allow it to sink to different depths in the river for easier water collection.

Claims

1. A device for water stratification sampling, characterized in that, The sample box (1) includes a vertically arranged multi-layered chamber (2). Each chamber (2) has an inlet and an outlet (3). The outlet (3) of each chamber (2) is detachably connected to a cover (4). An L-shaped conduit (5) is connected to the inlet of each chamber (2). The conduit (5) is bent upwards. A cap (6) is fitted over the end of the conduit (5). The side wall of the cap (6) has a [missing information]. The sampling box (1) has a through hole (7), and the upper and lower end faces are respectively connected to connecting pieces (8). It also includes a push rod (9), which vertically passes through the two connecting pieces (8). The push rod (9) is slidably connected to the connecting pieces (8). A transmission component is provided between the push rod (9) and the connecting piece (8) on the bottom surface of the sampling box (1). The cap (6) of the conduit (5) of each chamber (2) is connected to the push rod (8) via a connecting rod (10). 9) Fixed connection: Water storage tanks (11) are fixedly connected to the left and right sides of the sampling box (1), respectively. Openings are provided on the bottom surfaces of the two water storage tanks (11). A vertical pull rod (12) passes through each water storage tank (11). The pull rod (12) passes through the openings on the top and bottom surfaces of the water storage tanks (11) and the bottom surfaces of the water storage tanks (11). The pull rod (12) is slidably connected to the water storage tanks (11). The upper end of the pull rod (12) is connected to... A transmission component is provided between the upper and lower surfaces of the water storage tank (11). A baffle (13) is fixedly connected to the bottom end of the pull rod (12). Two vertical guide rods (14) are fixedly connected to the baffle (13). The guide rods (14) pass through the lower surface of the water storage tank (11) and are slidably connected to the water storage tank (11). A connecting pipe (15) for connecting a water pump is provided on the side of the water storage tank (11) near its bottom surface.

2. The water stratification sampling device according to claim 1, characterized in that, A rubber plug (16) is fixedly connected to the inner side of the bottom of the tube cap (6).

3. The water stratification sampling device according to claim 1, characterized in that, The transmission component includes a nut (17), and the upper ends of the push rod (9) and the pull rod (12) are respectively threaded. The connecting plates of the end face of the water storage tank (11) and the upper end face of the sampling box (1) are respectively rotatably connected with nuts (17). The upper end of the push rod (9) passes through the nut (17) on the connecting plate it passes through, and the push rod (9) is threadedly connected to the nut (17). The pull rod (12) passes through the nut (17) on the upper end face of the water storage tank (11), and the pull rod (12) is threadedly connected to the nut (17) it passes through.

4. A water stratification sampling device according to claim 3, characterized in that, A sealing ring (18) is fixedly connected to the lower end of the pull rod (12) near the baffle (13). The diameter of the sealing ring (18) is slightly larger than the diameter of the bottom opening of the water tank (11). The sealing ring (18) is made of elastic material.

5. A water stratification sampling device according to claim 3, characterized in that, The outer wall of the nut (17) has friction grooves.

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