Water sampling device for catch basin

Abstract

The invention discloses a rain well water body sampling device, and belongs to the technical field of water body sampling, the rain well water body sampling device comprises a support, a hoisting mechanism and a sampler, the hoisting mechanism is installed on the support and used for lowering and extracting the sampler, a hoisting rope is arranged on the hoisting mechanism, the upper end of the sampler for water body sampling is rotatably connected with a hoisting piece through a pin shaft, and the hoisting rope is connected with the hoisting piece. The lifting piece is connected with one end of the lifting rope, and an auxiliary assembly is arranged on the sampler and used for assisting the sampler in water sampling and cleaning the outer surface of the sampler after sampling. Under the condition that the well lid is not opened, water sampling work of a catch basin can be completed, meanwhile, the water entering condition of the sampler is judged by judging whether the floating ring collides with the pressure sensor on the fixed block, and the situation that the sampler cannot make contact with the water for sampling due to too little lowering is prevented; and the sampler is prevented from contacting with sludge at the bottom of the well to mix water due to excessive lowering.

Description

Technical Field

[0001] The invention relates to the technical field of water body sampling, and in particular to a rainwater well water body sampling device. Background Art

[0002] A rainwater well has a hole on its side connected to a drainage pipe and a seepage pipe extending downward at the bottom, which can replenish rainwater into the underground and drain excess rainwater through the drainage pipe. At present, when sampling water in a rainwater well, most people use a hanging sampling device for sampling. However, the existing sampling equipment may have the following problems when in use: due to the weak light in the well, it is difficult to control the lowering height of the sampling equipment. If the sampling equipment is lowered too little, the sampling equipment will not be able to contact the water and cannot take samples. If the sampling equipment is lowered too much, it will contact the bottom silt and confuse the water, affecting the sampling results of the water. In addition, this sampling method requires opening the manhole cover for operation, which is not only dangerous but also causes dust and debris to fall when the manhole cover is opened, thereby affecting the water quality in the well. Therefore, a rainwater well water sampling device is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a rainwater well water sampling device.

[0004] A rainwater well water sampling device comprises a bracket, a lifting mechanism and a sampler. The lifting mechanism is installed on the bracket for lowering and extracting the sampler. The lifting mechanism is provided with a lifting rope. The upper end of the sampler used for water sampling is rotatably connected to a hanging piece through a pin shaft, and the hanging piece is connected to one end of the lifting rope. The sampler is provided with an auxiliary component for assisting the sampler in sampling water and cleaning the outer surface of the sampler after sampling.

[0005] In the above-mentioned rainwater well water sampling device, the lifting mechanism includes a rotating shaft and a positioning plate. The rotating shaft is rotatably connected to the top of the bracket through a bearing. A rope drum is coaxially connected to the rotating shaft. A rocker is coaxially connected to one end of the rotating shaft. One end of the lifting rope is wound around the rope drum. The positioning plate is installed at the bottom of the bracket, and a positioning hole is opened at the center of the positioning plate.

[0006] In the above-mentioned rainwater well water sampling device, a cavity is provided at the center position of the sampler, and two centrally symmetrical sampling cavities are provided at both ends of the cavity, two slides are slidably connected in the cavity, and a compressed sponge is commonly connected between the two slides, a connecting port is provided on the outer side of the sampler to connect with the cavity, and a waterproof tape is provided on the outer wall of the sampler and at the connecting port, a piston block is sealingly and slidably connected in each of the sampling cavities, a sliding rod is connected to the side of each of the slides close to the compressed sponge, and the other end of the sliding rod is connected to the piston block in the sampling cavity farther away, a water inlet hole is provided at the end of each of the sampling cavities away from the cavity, and an air outlet is provided at the end of each of the sampling cavities close to the cavity.

[0007] In the above-mentioned rainwater well water sampling device, the auxiliary component includes a floating ring and a fixed block, two symmetrical guide rails are connected to the outside of the sampler, the floating ring is sleeved on the sampler and slidably connected to the two guide rails, a cleaning brush is provided on the inner ring of the floating ring, the fixed block is connected to the sampler and close to one end of the hanging piece, a pressure sensor is provided at the bottom of the fixed block, and a signal receiving device for the pressure sensor is provided on the bracket.

[0008] In the above-mentioned rainwater well water sampling device, a push rod is connected to the side of each slide plate away from the compressed sponge, and the other end of the push rod extends to the outside of the sampler and is connected to a pressure block.

[0009] In the above-mentioned rainwater well water sampling device, the communication port and the water inlet hole are both located on the same side of the sampler.

[0010] In the above-mentioned rainwater well water sampling device, the diameter of the positioning hole is larger than the diameter of the floating ring.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The present invention uses the collision between the floating ring and the pressure sensor on the fixed block to determine the water entry of the sampler, which prevents the sampler from being unable to contact the water body for sampling due to being lowered too little, and also avoids the sampler from being contacted with the mud at the bottom of the well and confusing the water body due to being lowered too much.

[0013] 2. When the sampler enters and exits the water, the cleaning brush on the floating ring cleans the surface of the sampler. On the one hand, it removes impurities such as spider webs that stick to the sampler during the lowering process to avoid clogging the water inlet hole. On the other hand, it scrapes off the sewage carried on the surface of the sampler, making it convenient for the sampling personnel to take the sampler that has completed sampling.

[0014] 3. The present invention can complete the water sampling work of the rainwater well without opening the manhole cover, which not only improves the sampling efficiency and safety, but also avoids the falling of dust and debris when opening the manhole cover to affect the sample data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the sampler part of the present invention from a first viewing angle.

[0017] Figure 3 It is a structural schematic diagram of the sampler part of the present invention from a second viewing angle.

[0018] Figure 4 It is a cross-sectional view of the sampler in the present invention.

[0019] Figure 5 It is a cross-sectional view of the sampler of the present invention cut at another angle.

[0020] In the figure: 1 bracket, 2 lifting mechanism, 21 rotating shaft, 22 rope drum, 23 rocker, 24 lifting rope, 25 positioning plate, 26 positioning hole, 3 sampler, 31 hanging piece, 32 cavity, 321 connecting port, 322 waterproof tape, 33 sampling cavity, 331 piston block, 332 water inlet hole, 333 air outlet hole, 34 slide plate, 341 slide rod, 35 compression sponge, 36 push rod, 37 pressure block, 4 floating ring, 41 guide rail, 42 cleaning brush, 43 fixing block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Reference Figure 1-5 As shown, a rainwater well water sampling device includes a bracket 1, a lifting mechanism 2 and a sampler 3. The lifting mechanism 2 is installed on the bracket 1 for lowering and extracting the sampler 3. A lifting rope 24 is provided on the lifting mechanism 2. The upper end of the sampler 3 used for water sampling is rotatably connected to a hanging piece 31 through a pin shaft, and the hanging piece 31 is connected to one end of the lifting rope 24. An auxiliary component is provided on the sampler 3 to assist the sampler 3 in sampling water, and the outer surface of the sampler 3 after sampling is cleaned.

[0023] In this embodiment, the lifting mechanism 2 includes a rotating shaft 21 and a positioning plate 25. The rotating shaft 21 is rotatably connected to the top of the bracket 1 through a bearing. A rope drum 22 is coaxially connected to the rotating shaft 21. One end of the rotating shaft 21 is coaxially connected to a rocker 23. One end of the lifting rope 24 is wound around the rope drum 22. The positioning plate 25 is installed at the bottom of the bracket 1, and a positioning hole 26 is opened at the center of the positioning plate 25. When the lifting rope 24 is normally hung, the lifting rope 24 just passes through the center of the positioning hole 26.

[0024] In this embodiment, a cavity 32 is provided at the center of the sampler 3, and two centrally symmetrical sampling cavities 33 are provided at both ends of the cavity 32. Two slide plates 34 are slidably connected in the cavity 32, and a compressed sponge 35 is commonly connected between the two slide plates 34. A connecting port 321 is provided on the outside of the sampler 3 to communicate with the cavity 32, and a waterproof tape 322 is provided on the outer wall of the sampler 3 and at the connecting port 321 to prevent the compressed sponge 35 from absorbing moisture in the air. Each of the sampling cavities 33 is sealed. A piston block 331 is slidably connected, and a sliding rod 341 is connected to the side of each slide plate 34 close to the compression sponge 35, and the other end of the sliding rod 341 is connected to the piston block 331 in the sampling chamber 33 that is farther away. A water inlet 332 is provided at the end of each sampling chamber 33 away from the cavity 32, and an air outlet 333 is provided at the end of each sampling chamber 33 close to the cavity 32. A push rod 36 is connected to the side of each slide plate 34 away from the compression sponge 35, and the other end of the push rod 36 extends to the outside of the sampler 3 and is connected to a pressure block 37.

[0025] In this embodiment, the auxiliary component includes a floating ring 4 and a fixed block 43. Two symmetrical guide rails 41 are connected to the outside of the sampler 3. The floating ring 4 is sleeved on the sampler 3 and slidably connected to the two guide rails 41. A cleaning brush 42 is provided on the inner ring of the floating ring 4. The fixed block 43 is connected to the sampler 3 and is close to one end of the hanging piece 31. A pressure sensor is provided at the bottom of the fixed block 43. A signal receiving device for the pressure sensor is provided on the bracket 1. Limit blocks are provided at both ends of the guide rail 41.

[0026] The communication port 321 and the water inlet 332 are both located on the same side of the sampler 3 , so that water flows out from one side when taking out samples from the sampler 3 .

[0027] The diameter of the positioning hole 26 is larger than the diameter of the floating ring 4 .

[0028] The working process and principle of the present invention are as follows:

[0029] When the invention is used, the bracket 1 is placed on the manhole cover of the rainwater well, and the positioning hole 26 is aligned with the water flow hole on the manhole cover. After the waterproof tape 322 on the sampler 3 is torn off, the rocker 23 is rotated to slowly release the hanging rope 24, so that the sampler 3 falls through the positioning hole 26 and the water flow hole of the manhole cover in turn and enters the rainwater well. When the sampler 3 contacts the water body, the floating ring 4 at the bottom slides up under the action of buoyancy as the sampler 3 continues to enter the water. During the sliding process of the floating ring 4, the cleaning brush 4 2 will clean the surface of the sampler 3 to remove impurities such as spider webs that adhere to the sampler 3 during the lowering process to avoid clogging the water inlet hole 332. When the top of the sampler 3 enters the water, the floating ring 4 will collide with the pressure sensor on the fixed block 43. The sampling personnel located at the bracket 1 will stop turning the rocker 24 after receiving the signal from the pressure sensor, which can prevent the sampler from being unable to contact the water body for sampling due to too little lowering, and also prevent the sampler from being contacted with the mud at the bottom of the well and confusing the water body due to too much lowering.

[0030] After the sampler 3 enters the water body, the water in the well will enter the cavity 32 from the connecting port 321. The compressed sponge 35 will expand after absorbing water and push the two slide plates 34 to slide away from each other. Under the pull of the slide rod 341, the piston blocks 331 in the two sampling chambers 33 will slide in the direction of the cavity 32, and the water in the rainwater well will be drawn into the sampling chamber 33 through the water inlet hole 332 by the negative pressure, so that two water samples can be obtained at one time. At the same time, the original air in the sampling chamber 33 will be squeezed out from the air outlet 333 by the piston block 331 to form bubbles in the water. The sampler can judge whether the sampling is completed by the sound of bubbles. When the bubbling sound ends, it means that the sampling of the water in the sampling chamber 33 is completed. The sampler can reverse the wheel 23 to reel in the hanging rope 24 and pull out the sampler 3. When the sampler 3 leaves the water body, the floating ring 4 slides down under the action of gravity to scrape off the sewage carried on the surface of the sampler 3, making it convenient for the sampler to take the sampler 3. After taking it, the sampler can press the two pressing blocks 37 pushed out during sampling to squeeze out the water in the compressed sponge 35 and obtain the water sample in the sampling chamber 33.

[0031] In summary, completing the water sampling work of the rainwater well without opening the manhole cover not only improves the sampling efficiency and safety, but also avoids the falling of dust and debris when opening the manhole cover, which affects the sample data.

[0032] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A rainwater well water sampling device, characterized in that: The invention comprises a support (1), a lifting mechanism (2) and a sampler (3); the lifting mechanism (2) is installed on the support (1) and is used for lowering and extracting the sampler (3); a lifting rope (24) is arranged on the lifting mechanism (2); the upper end of the sampler (3) used for water sampling is rotatably connected to a hanging piece (31) via a pin shaft, and the hanging piece (31) is connected to one end of the lifting rope (24); the sampler (3) is provided with an auxiliary component for assisting the sampler (3) in sampling water and cleaning the outer surface of the sampler (3) after sampling.

2. A rainwater well water sampling device according to claim 1, characterized in that: The lifting mechanism (2) comprises a rotating shaft (21) and a positioning plate (25), wherein the rotating shaft (21) is rotatably connected to the top of the bracket (1) via a bearing, a rope drum (22) is coaxially connected to the rotating shaft (21), one end of the rotating shaft (21) is coaxially connected to a rocker (23), one end of the lifting rope (24) is wound around the rope drum (22), and the positioning plate (25) is installed at the bottom of the bracket (1), and a positioning hole (26) is provided at the center of the positioning plate (25).

3. A rainwater well water sampling device according to claim 2, characterized in that: A cavity (32) is provided at the center of the sampler (3), and two centrally symmetrical sampling cavities (33) are provided at both ends of the cavity (32). Two slide plates (34) are slidably connected in the cavity (32), and a compressed sponge (35) is commonly connected between the two slide plates (34). A connecting port (321) is provided on the outside of the sampler (3) to communicate with the cavity (32), and a waterproof tape (35) is provided on the outer wall of the sampler (3) at the connecting port (321). 322), a piston block (331) is sealed and slidably connected in each sampling cavity (33), a sliding rod (341) is connected to a side of each sliding plate (34) close to the compression sponge (35), and the other end of the sliding rod (341) is connected to the piston block (331) in the sampling cavity (33) that is farther away, a water inlet hole (332) is provided at one end of each sampling cavity (33) away from the cavity (32), and an air outlet hole (333) is provided at one end of each sampling cavity (33) close to the cavity (32).

4. A rainwater well water sampling device according to claim 3, characterized in that: The auxiliary component comprises a floating ring (4) and a fixed block (43); the outer side of the sampler (3) is connected to two symmetrical guide rails (41); the floating ring (4) is sleeved on the sampler (3) and slidably connected to the two guide rails (41); a cleaning brush (42) is arranged on the inner ring of the floating ring (4); the fixed block (43) is connected to the sampler (3) and is close to one end of the hanging piece (31); a pressure sensor is arranged at the bottom of the fixed block (43); and a signal receiving device for the pressure sensor is arranged on the bracket (1).

5. A rainwater well water sampling device according to claim 3, characterized in that: A push rod (36) is connected to one side of each slide plate (34) away from the compression sponge (35), and the other end of the push rod (36) extends to the outside of the sampler (3) and is connected to a pressure block (37).

6. A rainwater well water sampling device according to claim 3, characterized in that: The communication port (321) and the water inlet hole (332) are both located on the same side of the sampler (3).

7. A rainwater well water sampling device according to claim 4, characterized in that: The diameter of the positioning hole (26) is greater than the diameter of the floating ring (4).

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