A non-contact portable sampling device for contaminated water bodies

Abstract

This invention discloses a non-contact portable sampling device for polluted water bodies, comprising a support, a sampling component, a deployment and retraction component, and a collection component. The sampling component includes a mounting sleeve, a ring-shaped sampling tube, and a sampling pump. The deployment and retraction component includes a mounting plate and a first winding reel snapped onto the mounting plate, with a first pull cable connected to the mounting sleeve on the first winding reel. The collection component includes a transfer box mounted on the support and a collection bottle inside the transfer box. The device structure of this invention is reasonably designed. By using the support to suspend the sampling component on the water surface, the entire sampling work can be completed by the staff standing on the riverbank, reducing the risk of staff falling into the river and improving the safety of the device. At the same time, the device of this invention does not require staff to come into contact with the water sample during use, which reduces the harm caused by polluted water to the staff and also avoids the water sample being contaminated by external factors, thus affecting the water sample detection results.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water environment treatment, in particular to a non-contact portable sampling device for polluted water bodies. BACKGROUND

[0002] River water pollution refers to the phenomenon that untreated industrial wastewater, domestic sewage, farmland drainage and other harmful substances directly or indirectly enter the river, exceed the self-purification capacity of the river, and cause water quality deterioration and biological community change. The dilution and self-purification capacity of the river is strong, which is helpful for the diffusion and degradation of pollutants, but a large number of wastewater discharged into the river by many large industrial areas and cities built in the riverfront area leads to different degrees of pollution of the river.

[0003] The utility model patent with publication number CN107024366A discloses a portable water quality sampler, mainly including a water quality sampling probe, an extension rod, a sampling pipeline automatic take-up reel and a handheld terminal. The water quality sampling probe is composed of a depth sensor and a sampling pump; the extension rod is composed of multiple extension rods, a pulley set, a hook and a suspension seat; the sampling pipeline automatic take-up reel is composed of a reel, a winch motor, a balance weight, a cable and a sample delivery pipe, a suspension balance frame and a reel support; and the handheld terminal is composed of an LCD liquid crystal screen and a key set. However, the structure of the water quality sampler is too complex, which is not convenient to use and is not conducive to the normal development of field water quality sampling work.

[0004] The invention patent with publication number CN107966326A discloses a portable sewage water sample collection device, which comprises an electric telescopic rod and a rotating shaft. The right end of the electric telescopic rod is rotationally connected with a first sampler through the rotating shaft. The right side of the first sampler is slidingly connected with a second sampler. The right end of the second sampler is slidingly connected with a third sampler. The top end of the first sampler is fixedly connected with a support. The top end of the support is rotationally connected with a pulley. The pulley is rotationally connected with a rope. The other end of the rope is fixedly connected with a sampling pipe cover. The two sides of the sampling pipe cover are fixedly connected with tension springs. However, when the water sample collection device is used, the workers directly contact the water sample, and the contaminated water sample may pose a threat to the health of the workers. Moreover, the device can only collect one water sample at a time, and the water sample collection efficiency is low. SUMMARY

[0005] In view of the above technical problems, the present application provides a non-contact portable sampling device for polluted water bodies.

[0006] The technical scheme of the present application is as follows: a non-contact portable sampling device for polluted water bodies, comprising a support and a sampling assembly, a take-up assembly and a collection assembly arranged on the support; the take-up assembly and the collection assembly are connected with the sampling assembly respectively.

[0007] The sampling assembly comprises a mounting sleeve, an annular sampling pipe arranged on the inner side wall of the mounting sleeve, and a sampling pump slidingly connected to the support through a sliding seat; a counterweight seat is arranged below the mounting sleeve; a sampling inlet is arranged on the inner side of the annular sampling pipe; the input end of the sampling pump is connected to the annular sampling pipe through a conduit, and the output end of the sampling pump is provided with a liquid guide pipe;

[0008] The winding and releasing assembly comprises a mounting plate arranged on the support and a first winding disc rotatably connected to the mounting plate; a first cable is arranged on the first winding disc and connected to the mounting sleeve at the free end;

[0009] The collecting assembly comprises a transfer box movably arranged on the support and a collecting bottle arranged in the transfer box; an insertion hole corresponding to the position of the collecting bottle is arranged through the top end of the transfer box.

[0010] Further, the support comprises a base, an extendable column arranged on the base, and an extendable cross bar rotatably connected to the top end of the extendable column; a limiting plate is arranged at the end of the extendable cross bar away from the extendable column;

[0011] Description: By arranging the extendable column and the extendable cross bar, the height of the support and the sampling distance can be adjusted, and the practicability of the device is improved.

[0012] Further, a plurality of mounting sleeves are arranged in parallel on the mounting sleeve, adjacent two mounting sleeves are connected through a lifting frame, and a limiting cross beam slidingly connected to the lifting frame is arranged between adjacent two mounting sleeves;

[0013] The number of the annular sampling pipe, the sampling pump and the collecting bottle corresponds to the number of the mounting sleeves;

[0014] Description: By arranging a plurality of mounting sleeves, the present application can collect water samples of different depths at one time, and the reliability and efficiency of the sampling work are improved.

[0015] Further, a first sleeve is arranged at the top end of the counterweight seat, and a second sleeve is arranged on the lower bottom surface of the uppermost mounting sleeve and sleeved in the first sleeve; a sliding plate penetrating the second sleeve and connected to the first sleeve is arranged in the second sleeve, and the sliding plate is slidingly connected to the second sleeve;

[0016] The winding and releasing assembly further comprises a second winding disc rotatably connected to the mounting plate, a second cable is arranged on the second winding disc and connected to the sliding plate at the free end after penetrating the limiting plate;

[0017] Description: By releasing the sliding plate through the second cable, the first sleeve slides downward along the second sleeve, and the counterweight seat is released into the water body, avoiding the swing of the sampling assembly under the impact of water flow during use, thereby improving the use reliability of the present application.

[0018] Further, the first winding disc is internally sleeved with an operating rod movably connected with the mounting plate, the first winding disc is internally provided with a gear groove, and the operating rod is sleeved with a connecting gear in meshing connection with the gear groove; the operating rod is slidably connected with a plug-in rod fixedly connected with the mounting plate, and the plug-in rod is sleeved with a locking spring abutting against the inner wall of the operating rod; one end of the operating rod close to the mounting plate is provided with a locking ring capable of being clamped with the mounting plate; the second winding disc is also provided with an operating rod;

[0019] It is explained that when the first cable needs to be released or tightened, the operating rod is pulled out of the plug-in rod, so that the locking ring is separated from the mounting plate, and at this time, the operating rod is rotated to drive the first winding disc to rotate through the meshing action of the connecting gear and the gear groove; when the operating rod is released, the operating rod moves along the plug-in rod under the action of the locking spring, so that the locking ring is clamped with the mounting plate, and the first winding disc is prevented from rotating during use, thereby improving the reliability of sampling work.

[0020] Further, the bottom of the collecting bottle is slidably connected with a piston plate, the piston plate is sleeved with a movable tube penetrating through the top end of the collecting bottle, and the movable tube is provided with a sampling groove below the side wall; the upper side wall of the movable tube is provided with a dismounting seat in threaded connection with the collecting bottle;

[0021] It is explained that when the water sample enters the collecting bottle through the sampling groove on the movable tube, the piston plate moves upward along the inner wall of the collecting bottle under the action of water pressure, so that the air in the sampling bottle is effectively prevented from polluting the water sample.

[0022] Further, the movable tube is externally sleeved with a first compression spring abutting against the piston plate; the movable tube is internally sleeved with a sealed tube with a closed bottom, the sealed tube is provided with a second compression spring abutting against the bottom of the collecting bottle below; and the side wall of the sealed tube is provided with a communication groove capable of being communicated with the sampling groove;

[0023] It is explained that when the liquid guide tube is inserted into the movable tube to press the sealed tube, the sealed tube moves downward along the movable tube, the communication groove coincides with the sampling groove, and the water sample enters the collecting bottle; when the liquid guide tube is separated from the sealed tube, the sealed tube moves upward under the action of the second compression spring, the communication groove is staggered with the sampling groove, and the water sample is prevented from flowing out during movement of the collecting bottle; and the first compression spring is arranged to enable the water sample in the collecting bottle to flow out quickly.

[0024] Furthermore, it also includes a positioning assembly mounted on the telescopic column; the positioning assembly includes a positioning cone that is slidably engaged inside the telescopic column and penetrates the base, a push block that is slidably engaged on the outer wall of the telescopic column and can be connected to the positioning cone, and a pedal that is movably hinged on the outer wall of the telescopic column and connected to the push block; several slots are provided on the outer wall of the positioning cone along its length; a retaining sleeve that is slidably engaged with the telescopic column is fitted on the push block; a locking block that can engage with the slots is provided at the end of the push block near the positioning cone, and a return spring that abuts against the retaining sleeve is fitted at the end of the push block away from the positioning cone; a push rod that is movably hinged to the push block is movably hinged to the bottom surface of the pedal; a return torsion spring is provided at the connection between the pedal and the telescopic column;

[0025] Explanation: By pressing down the pedal, the push rod is pushed down to push the block, and the locking block engages with the slot on the positioning cone. After the positioning cone penetrates the base, it is inserted into the soil, ensuring the support stability of the bracket and ensuring the stable operation of water sample collection.

[0026] The method of using this invention includes the following steps:

[0027] S1. Adjust the length of the telescopic column and telescopic crossbar as needed;

[0028] S2. Rotate the telescopic crossbar so that the mounting sleeve, annular sampling tube and counterweight are positioned above the water surface;

[0029] S3. Rotate the first winding disc and use the first cable to release the sleeve, annular sampling tube and counterweight into the river water;

[0030] S4. Move the slide block so that the liquid guide tube passes through the insertion hole and is inserted into the collection bottle. Turn on the sampling pump. The water sample enters the inside of the ring sampling tube through the injection head and finally enters the collection bottle through the conduit.

[0031] S5. When it is necessary to collect water samples from different water areas, clean each component of the device and repeat steps S1-S4.

[0032] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0033] First, the device structure of the present invention is reasonably designed. The sampling component is suspended on the water surface by the bracket, and the staff can complete the entire sampling work while standing on the riverbank, which reduces the risk of staff falling into the river and improves the safety of the device.

[0034] Second, the present application uses the lifting frame to connect each mounting sleeve, so that each mounting sleeve is automatically unfolded during use, thereby enabling water sample collection at different depths of the same sampling water area at the same time, improving the efficiency of water sample collection and reducing the output of manpower and material resources; meanwhile, after each lifting frame is retracted, the volume of the device is reduced, improving the portability and operability of the device.

[0035] Third, during use of the device of the present application, the worker does not need to contact the water sample, which on the one hand reduces the harm caused to the worker by the polluted water body, and on the other hand can also avoid the water sample from being polluted by external factors and affecting the detection result of the water sample. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a longitudinal sectional view of the present application;

[0037] Figure 2 is a connection schematic diagram of the mounting sleeve and the lifting frame of the present application;

[0038] Figure 3 is a connection schematic diagram of the annular sampling tube and the mounting sleeve of the present application;

[0039] Figure 4 is a connection schematic diagram of the counterweight seat and the mounting sleeve of the present application;

[0040] Figure 5 is a connection schematic diagram of the first winding disc, the second winding disc and the telescopic horizontal rod of the present application;

[0041] Figure 6 is a connection schematic diagram of the operating rod and the first winding disc of the present application;

[0042] Figure 7 is a structure schematic diagram of the collection bottle of the present application;

[0043] Figure 8 is a connection schematic diagram of the positioning assembly and the telescopic vertical column of the present application;

[0044] Figure 9 is a connection schematic diagram of the pushing block and the positioning cone of the present application;

[0045] Wherein, 1-bracket, 10-base, 11-telescopic column, 12-telescopic crossbar, 13-limiting plate, 2-sampling assembly, 20-mounting sleeve, 21-annular sampling tube, 210-sample head, 22-sample pump, 220-sliding seat, 221-liquid guide tube, 23-counterweight seat, 230-first sleeve, 231-second sleeve, 232-sliding plate, 24-lifting frame, 240-limiting crossbeam, 2400-storage strap, 3-retraction assembly, 30-mounting plate, 31-first winding disc, 310-gear groove, 32-first inhaul, 33-second winding disc, 34-second inhaul, 35-operation lever, 350-connection gear, 351-insertion rod, 3510-locking spring, 352-locking ring, 4-collection assembly, 40-transfer box, 400-insertion hole, 41-collection bottle, 410-piston plate, 411-movable tube, 4110-sample inlet, 412-disassembly seat, 413-first compression spring, 414-sealing tube, 4140-communication groove, 415-second compression spring, 5-positioning assembly, 50-positioning cone, 500-clamping groove, 501-guiding seat, 51-pushing block, 510-clamping block, 511-return spring, 52-treadle, 53-retaining sleeve, 54-push rod. DETAILED DESCRIPTION

[0046] Example 1

[0047] As shown in Figure 1 , 5 , a non-contact portable sampling device for contaminated water bodies comprises a bracket 1 and a sampling assembly 2, a retraction assembly 3, and a collection assembly 4 arranged on the bracket 1; the retraction assembly 3 and the collection assembly 4 are connected with the sampling assembly 2 respectively; the bracket 1 comprises a base 10, a telescopic column 11 arranged on the base 10, and a telescopic crossbar 12 rotationally connected to the top end of the telescopic column 11; the end of the telescopic crossbar 12 away from the telescopic column 11 is provided with a limiting plate 13;

[0048] As shown in Figure 1 , 3 , 8, the sampling assembly 2 comprises one mounting sleeve 20, one annular sampling tube 21 arranged on the inner side wall of the mounting sleeve 20, and one sample pump 22 slidingly connected to the telescopic column 11 through a sliding seat 220; a counterweight seat 23 is arranged below the mounting sleeve 20; the counterweight seat 23 is made of a cylindrical lead block of the prior art; an inlet head 210 is arranged on the inner side of the annular sampling tube 21; the input end of the sample pump 22 is connected with the annular sampling tube 21 through a guide tube, and the output end of the sample pump 22 is provided with a liquid guide tube 221;

[0049] As shown in Figure 1 , 6As shown in the figure, the folding assembly 3 comprises a mounting plate 30 arranged at one end of the telescopic cross rod 12 close to the telescopic stand 11 and a first winding disc 31 rotatably clamped on the mounting plate 30; the first winding disc 31 is wound with a first cable 32, and the free end of the first cable 32 is connected with the mounting sleeve 20 after penetrating through the limiting plate 13.

[0050] As shown in the figure, Figure 8 As shown in the figure, the collecting assembly 4 comprises a transfer box 40 movably arranged on the base 10 and a collecting bottle 41 arranged inside the transfer box 40; the top end of the transfer box 40 is provided with an insertion hole 400 corresponding to the position of the collecting bottle 41, and the collecting bottle 41 is made of transparent glass material according to the prior art.

[0051] Embodiment 2

[0052] The difference between this embodiment and embodiment 1 is that:

[0053] As shown in the figure, Figure 2 As shown in the figure, the mounting sleeve 20 is arranged in parallel in upper and lower positions, and five mounting sleeves 20 are arranged in parallel, and adjacent two mounting sleeves 20 are connected through a lifting frame 24, and a limiting cross beam 240 is arranged between the adjacent two mounting sleeves 20 and is slidably clamped with the lifting frame 24;

[0054] The number of the annular sampling tube 21, the sampling pump 22 and the collecting bottle 41 corresponds to the number of the mounting sleeve 20;

[0055] By arranging five mounting sleeves 20, the present application can collect water samples of different depths at one time, thereby improving the reliability and efficiency of the sampling work.

[0056] Embodiment 3

[0057] The difference between this embodiment and embodiment 2 is that:

[0058] As shown in the figure, Figure 4 As shown in the figure, the counterweight seat 23 is provided with a first sleeve 230 at the top end, and the lower bottom surface of the uppermost mounting sleeve 20 is provided with a second sleeve 231 sleeved in the first sleeve 230; the second sleeve 231 is provided with a sliding plate 232 penetrating through the second sleeve 231 and connected with the first sleeve 230, and the sliding plate 232 is slidably clamped with the second sleeve 231;

[0059] As shown in the figure, Figure 5 As shown in the figure, the folding assembly 3 further comprises a second winding disc 33 rotatably clamped on the mounting plate 30, and the second winding disc 33 is wound with a second cable 34, and the free end of the second cable 34 is connected with the sliding plate 232 after penetrating through the limiting plate 13;

[0060] By using the second cable 34 to release the sliding plate 232, the first sleeve 230 slides downward along the second sleeve 231, releasing the counterweight 23 into the water body. This prevents the sampling component 2 from swaying under the impact of water flow during use, thereby improving the reliability of the invention.

[0061] Example 4

[0062] The difference between this embodiment and embodiment 3 is that:

[0063] like Figure 6 As shown, the first winding reel 31 has an operating rod 35 that is movably engaged with the mounting plate 30 inside. The first winding reel 31 has a gear groove 310 inside. The operating rod 35 has a connecting gear 350 that meshes with the gear groove 310. The operating rod 35 has a plug rod 351 that is slidably engaged with the mounting plate 30 inside. The plug rod 351 has a locking spring 3510 that abuts against the inner wall of the operating rod 35. The end of the operating rod 35 near the mounting plate 30 has a locking ring 352 that can engage with the mounting plate 30. The second winding reel 33 also has an operating rod 35 inside.

[0064] When it is necessary to release or tighten the first cable 32, the operating lever 35 is pulled out from the plug-in lever 351, causing the locking ring 352 to disengage from the mounting plate 30. At this time, the operating lever 35 is rotated, and the meshing action of the connecting gear 350 and the gear groove 310 drives the first winding disc 31 to rotate. When the operating lever 35 is released, the operating lever 35 moves along the plug-in lever 351 under the action of the locking spring 3510, so that the locking ring 352 is locked with the mounting plate 30, preventing the first winding disc 31 from rotating during the use of the device and improving the reliability of the operation.

[0065] Example 5

[0066] The difference between this embodiment and embodiment 4 is that:

[0067] like Figure 7 As shown, a piston plate 410 is slidably engaged with the bottom of the collection bottle 41. A movable tube 411, which passes through the top of the collection bottle 41, is sleeved on the piston plate 410. A sample inlet groove 4110 is provided on the lower side wall of the movable tube 411. A disassembly seat 412, which is threadedly connected to the collection bottle 41, is provided on the upper side wall of the movable tube 411. A first compression spring 413, which abuts against the piston plate 410, is sleeved on the outside of the movable tube 411. A sealing tube 414, which is closed at the bottom, is sleeved inside the movable tube 411. A second compression spring 415, which abuts against the bottom of the collection bottle 41, is provided below the sealing tube 414. A connecting groove 4140, which can communicate with the sample inlet groove 4110, is provided on the lower side wall of the sealing tube 414.

[0068] When the water sample enters the collecting bottle 41 through the sample inlet slot 4110 on the movable tube 411, the piston plate 410 moves upward along the inner wall of the collecting bottle 41 under the action of water pressure, effectively avoiding the pollution of air in the sampling bottle 41 to the water sample; when the liquid guide tube 221 is inserted into the movable tube 411 to extrude the sealing tube 414, the sealing tube 414 moves downward along the movable tube 411, the communication groove 4140 is overlapped with the sample inlet slot 4110, and the water sample enters the collecting bottle 41; when the liquid guide tube 221 is separated from the sealing tube 414, the sealing tube 414 moves upward under the action of the second compression spring 415, the communication groove 4140 is staggered with the sample inlet slot 4110, avoiding the water sample from flowing out during the movement of the collecting bottle 41; and the first compression spring 413 is arranged to enable the water sample in the collecting bottle 41 to flow out quickly.

[0069] Embodiment 6

[0070] The difference between this embodiment and embodiment 5 is that:

[0071] As shown in Figure 1 、 8 , 9, further comprising a positioning assembly 5 arranged on the telescopic column 11; the positioning assembly 5 comprises a positioning cone 50 slidably clamped in the telescopic column 11 and penetrating the base 10, a pushing block 51 slidably clamped on the outer sidewall of the telescopic column 11 and capable of being connected with the positioning cone 50, and a pedal 52 movably hinged on the outer sidewall of the telescopic column 11 and connected with the pushing block 51; a plurality of clamping grooves 500 are arranged on the outer sidewall of the positioning cone 50 along the length direction thereof; the pushing block 51 is sleeved with a retaining sleeve 53 slidably clamped with the telescopic column 11; one end of the pushing block 51 close to the positioning cone 50 is provided with a clamping block 510 capable of being clamped with the clamping groove 500, and the other end of the pushing block 51 away from the positioning cone 50 is sleeved with a reset spring 511 abutting against the retaining sleeve 53; the pedal 52 is movably hinged with a push rod 54 movably hinged with the pushing block 51; a reset torsion spring is arranged at the connection between the pedal 52 and the telescopic column 11; a guide seat 501 slidably clamped with the positioning cone 50 is arranged on the inner wall of the telescopic column 11;

[0072] By depressing the pedal 52, the push rod 54 depresses the pushing block 51, and the clamping block 510 is clamped with the clamping groove 500 on the positioning cone 50; after the positioning cone 50 penetrates the base 10 and is inserted into the soil, the support stability of the telescopic column 11 is ensured, and the water sample collection work is stably carried out; by arranging the guide seat 501, the positioning cone 50 can be prevented from swinging, thereby improving the stability when the clamping block 510 is clamped with the clamping groove 500.

[0073] Embodiment 7

[0074] The difference between this embodiment and embodiment 6 is that:

[0075] As shown in Figure 2As shown, each limiting cross beam 240 is provided with a receiving band 2400;

[0076] The receiving band 2400 can be used to tighten each limiting cross beam 240, which is beneficial to improve the convenience of the present application during the carrying process.

[0077] It should be noted that the sampling pump 22 used in the present application adopts the existing technology, which is not specially limited here, and the corresponding product can be selected according to the actual needs.

Claims

1. A non-contact portable sampling device for a contaminated water body, characterized in that, The application relates to a sampling device for a water quality monitoring system, which comprises a support (1) and a sampling assembly (2), a winding and releasing assembly (3) and a collecting assembly (4) arranged on the support (1); the winding and releasing assembly (3) and the collecting assembly (4) are connected with the sampling assembly (2) respectively. The sampling assembly (2) comprises a mounting sleeve (20), an annular sampling pipe (21) arranged on the inner side wall of the mounting sleeve (20) and a sampling pump (22) slidably clamped on the support (1) through a sliding seat (220); a counterweight seat (23) is arranged below the mounting sleeve (20); a sampling head (210) is arranged on the inner side of the annular sampling pipe (21); the input end of the sampling pump (22) is connected with the annular sampling pipe (21) through a pipeline, and the output end of the sampling pump (22) is provided with a liquid guide pipe (221); A plurality of mounting sleeves (20) are arranged on the sampling assembly (2) in parallel, adjacent two mounting sleeves (20) are connected through a lifting frame (24), and a limiting cross beam (240) slidably clamped with the lifting frame (24) is arranged between the adjacent two mounting sleeves (20); the number of the annular sampling pipes (21), the sampling pumps (22) and the collecting bottles (41) corresponds to the number of the mounting sleeves (20); a first sleeve (230) is arranged at the top end of the counterweight seat (23), and a second sleeve (231) sleeved in the first sleeve (230) is arranged on the lower bottom surface of the uppermost mounting sleeve (20); a sliding plate (232) penetrating through the second sleeve (231) and connected with the first sleeve (230) is arranged in the second sleeve (231), and the sliding plate (232) is slidably clamped with the second sleeve (231); The winding and releasing assembly (3) comprises a mounting plate (30) arranged on the support (1) and a first winding disc (31) rotatably clamped on the mounting plate (30); a first inhaul cable (32) is wound on the first winding disc (31), and the free end of the first inhaul cable (32) is connected with the mounting sleeve (20); the winding and releasing assembly (3) further comprises a second winding disc (33) rotatably clamped on the mounting plate (30), a second inhaul cable (34) is wound on the second winding disc (33), and the free end of the second inhaul cable (34) is connected with the sliding plate (232) after penetrating through the limiting plate (13); an operating rod (35) movably clamped with the mounting plate (30) is sleeved in the first winding disc (31), a gear groove (310) is arranged in the first winding disc (31), a connecting gear (350) meshingly connected with the gear groove (310) is sleeved on the operating rod (35); an inserting rod (351) fixedly connected with the mounting plate (30) is slidably clamped in the operating rod (35), a locking spring (3510) abutting against the inner wall of the operating rod (35) is sleeved on the inserting rod (351); a locking ring (352) capable of being clamped with the mounting plate (30) is arranged at the end of the operating rod (35) close to the mounting plate (30); the operating rod (35) is also arranged in the second winding disc (33). The collecting assembly (4) comprises a transfer box (40) movably arranged on the support (1) and a collecting bottle (41) arranged inside the transfer box (40); a top end of the transfer box (40) is provided with an insertion hole (400) corresponding to a position of the collecting bottle (41); A piston plate (410) is slidably clamped to an inner bottom of the collecting bottle (41), the piston plate (410) is sleeved with a movable tube (411) penetrating a top end of the collecting bottle (41), and a sampling groove (4110) is arranged on a lower side wall of the movable tube (411); a dismounting seat (412) is arranged on an upper outer side wall of the movable tube (411) and is threadedly connected with the collecting bottle (41); A first compression spring (413) is sleeved outside the movable tube (411) and abuts against the piston plate (410); a sealing tube (414) with a closed bottom is sleeved inside the movable tube (411), a second compression spring (415) is arranged below the sealing tube (414) and abuts against an inner bottom of the collecting bottle (41); a communication groove (4140) is arranged on a lower side wall of the sealing tube (414) and can be communicated with the sampling groove (4110).

2. A non-contact portable sampling device for a contaminated water body as claimed in claim 1, wherein, The support (1) comprises a base (10), an extension column (11) arranged on the base (10) and an extension cross bar (12) rotatably clamped to a top end of the extension column (11); a limiting plate (13) is arranged on an end of the extension cross bar (12) away from the extension column (11).

3. A non-contact portable sampling device for a contaminated water body as claimed in claim 2, wherein, A positioning assembly (5) is arranged on the extension column (11); the positioning assembly (5) comprises a positioning cone (50) slidably clamped inside the extension column (11) and penetrating the base (10), a pushing block (51) slidably clamped on an outer side wall of the extension column (11) and connectable with the positioning cone (50), and a pedal (52) movably hinged on the outer side wall of the extension column (11) and connected with the pushing block (51); a plurality of clamping grooves (500) are arranged on an outer side wall of the positioning cone (50) along a length direction of the positioning cone (50); a retaining sleeve (53) is sleeved on the pushing block (51) and slidably clamped with the extension column (11); an end of the pushing block (51) close to the positioning cone (50) is provided with a clamping block (510) capable of being clamped with the clamping grooves (500), and an end of the pushing block (51) away from the positioning cone (50) is sleeved with a reset spring (511) abutting against the retaining sleeve (53); the pedal (52) is movably hinged with a pushing rod (54) movably hinged with the pushing block (51); a reset torsion spring is arranged at a connection between the pedal (52) and the extension column (11).

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