Non-contact portable sampling device for polluted water body

Abstract

The invention discloses a non-contact portable sampling device for a polluted water body. The non-contact portable sampling device comprises a bracket, a sampling assembly, a retractable assembly and a collecting assembly, the sampling assembly comprises a mounting sleeve, an annular sampling pipe and a sampling pump; the winding and unwinding assembly comprises a mounting plate and a first winding disc connected to the mounting plate in a clamped mode, and a first inhaul cable connected with the mounting sleeve is arranged on the first winding disc. The collecting assembly comprises a transfer box arranged on the support and a collecting bottle arranged in the transfer box. The device is reasonable in structural design, the sampling assembly is suspended on the water surface through the support, a worker can stand on a river bank to complete the whole sampling work, the risk that the worker falls into a river channel is reduced, and the use safety of the device is improved; meanwhile, when the device is used, a worker does not need to be in contact with the water sample, so that on one hand, the harm of the polluted water body to the worker is reduced; on the other hand, the water sample can be prevented from being polluted by external factors to influence the detection result of the water sample.

Description

Technical Field

[0001] The invention relates to the technical field of water environment treatment, and in particular to a non-contact portable sampling device for polluted water bodies. Background Art

[0002] River water pollution refers to the phenomenon that untreated industrial wastewater, domestic sewage, agricultural drainage and other harmful substances directly or indirectly enter the river, exceeding the self-purification capacity of the river, causing water quality deterioration and changes in the biological community. The dilution self-purification capacity of the river is strong, which helps the diffusion and degradation of pollutants. However, since many large industrial areas and cities are built in riverside areas, a large amount of wastewater is discharged into the river, causing the river to be polluted to varying degrees.

[0003] The utility model patent with publication number CN107024366A discloses a portable water quality sampler, which mainly includes a water quality sampling probe, a telescopic rod, an automatic retractable reel for the sampling pipeline, and a handheld terminal. The water quality sampling probe is composed of a depth sensor and a sampling pump; the telescopic rod is composed of a multi-section telescopic rod, a pulley block, a hook, and a suspension seat; the automatic retractable reel for the sampling pipeline is composed of a reel, a winch motor, a balancing weight, a cable and a sample delivery tube, a suspension balance frame, and a reel bracket; the handheld terminal is composed of an LCD screen and buttons; however, since the structure of the water quality sampler is too complicated, it is not convenient to use, which 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, including an electric telescopic rod and a rotating shaft, the right end of the electric telescopic rod is rotatably connected to a first sampler through the rotating shaft, the right side of the first sampler is slidably connected to a second sampler, the right end of the second sampler is slidably connected to a third sampler, the top of the first sampler is fixedly connected to a bracket, the top of the bracket is rotatably connected to a pulley, the pulley is rotatably connected to a rope, the other end of the rope is fixedly connected to a sampling tube cover, and both sides of the sampling tube cover are fixedly connected to tension springs; however, when the water sample collection device is in use, the staff directly contacts the water sample, and the contaminated water sample will pose a threat to the health of the staff; and the device can only collect one water sample at a time, and the water sample collection efficiency is low. Summary of the invention

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

[0006] The technical solution of the present invention is: a non-contact portable sampling device for polluted water bodies, comprising a bracket and a sampling component, a retractable component, and a collecting component arranged on the bracket; the retractable component and the collecting component are respectively connected to the sampling component;

[0007] The sampling assembly includes a mounting sleeve, an annular sampling tube arranged on the inner side wall of the mounting sleeve, and a sampling pump slidably connected to the bracket through a sliding seat; a counterweight seat is arranged below the mounting sleeve; a sampling head is arranged inside the annular sampling tube; the input end of the sampling pump is connected to the annular sampling tube through a catheter, and a liquid guide tube is arranged at the output end of the sampling pump;

[0008] The retractable assembly includes a mounting plate arranged on the bracket and a first winding disc rotatably connected to the mounting plate; a first cable is wound around the first winding disc, and a free end of the first cable is connected to the mounting sleeve;

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

[0010] Furthermore, the bracket includes a base, a telescopic column arranged on the base, and a telescopic cross bar rotatably connected to the top of the telescopic column; a limit plate is arranged at one end of the telescopic cross bar away from the telescopic column;

[0011] Description: By setting up the telescopic column and telescopic crossbar, it is convenient to adjust the height of the bracket and the sampling distance, thereby improving the practicality of the device.

[0012] Furthermore, a plurality of mounting sleeves are arranged in parallel up and down, and two adjacent mounting sleeves are connected by a lifting frame, and a limiting crossbeam slidably engaged with the lifting frame is arranged between the two adjacent mounting sleeves;

[0013] The number of annular sampling tubes, sampling pumps and collecting bottles corresponds to the number of installation sleeves;

[0014] Description: By providing several installation sleeves, the present invention can collect water samples of different depths at one time, thereby improving the reliability and efficiency of the sampling work.

[0015] Furthermore, a first sleeve is provided at the top of the counterweight seat, and a second sleeve is provided on the bottom surface of the uppermost mounting sleeve and is sleeved inside the first sleeve; a sliding plate is provided inside the second sleeve and penetrates the second sleeve and is connected to the first sleeve, and the sliding plate is slidably engaged with the second sleeve;

[0016] The retractable assembly also includes a second winding disk rotatably connected to the mounting plate, a second cable is wound around the second winding disk, and a free end of the second cable passes through the limiting plate and is connected to the sliding plate;

[0017] Description: The sliding plate is released by the second pull cable, so that the first sleeve slides downward along the second sleeve, and the counterweight seat is released into the water body, so as to avoid the sampling component from swinging under the impact of water flow during use, thereby improving the reliability of the present invention.

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

[0019] Note: When it is necessary to release or tighten the first cable, pull the operating rod out from the plug-in rod to disengage the locking ring from the mounting plate. At this time, rotate the operating rod to drive the first winding disk to rotate by 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 engaged and locked with the mounting plate, preventing the first winding disk from rotating during use and improving the reliability of the sampling work.

[0020] Furthermore, a piston plate is slidably connected to the bottom of the collecting bottle, a movable tube is sleeved on the piston plate and passes through the top of the collecting bottle, a sample injection groove is arranged below the side wall of the movable tube; a disassembly seat connected with the collecting bottle thread is arranged above the outer side wall of the movable tube;

[0021] Note: When the water sample enters the collecting bottle through the sample inlet slot on the movable tube, the piston plate moves upward along the inner wall of the collecting bottle under the action of water pressure, effectively preventing the air in the sampling bottle from contaminating the water sample.

[0022] Furthermore, the outer sleeve of the movable tube is provided with a first compression spring abutting against the piston plate; the inner sleeve of the movable tube is provided with a sealing tube with a closed bottom end, and a second compression spring abutting against the bottom of the collecting bottle is provided below the sealing tube; and a connecting groove capable of communicating with the injection groove is provided below the side wall of the sealing tube;

[0023] Description: When the liquid guiding tube is inserted into the movable tube and squeezes the sealing tube, the sealing tube moves downward along the movable tube, the connecting groove and the injection groove overlap, and the water sample enters the collecting bottle; when the liquid guiding tube is separated from the sealing tube, the sealing tube moves upward under the action of the second compression spring, and the connecting groove and the injection groove are staggered, thereby preventing the water sample from flowing out during the movement of the collecting bottle; and the first compression spring can make the water sample inside the collecting bottle flow out quickly.

[0024] Furthermore, it also includes a positioning assembly arranged on the telescopic column; the positioning assembly includes a positioning cone that is slidably engaged with the inside of the telescopic column and passes through the base, a pushing block that is slidably engaged with 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 pushing block; a plurality of slots are arranged on the outer wall of the positioning cone along its length direction; a retaining sleeve that is slidably engaged with the telescopic column is sleeved on the pushing block; a clamping block that can be engaged with the slot is arranged on one end of the pushing block close to the positioning cone, and a return spring that is abutted by the retaining sleeve is sleeved on one end of the pushing block away from the positioning cone; a push rod that is movably hinged to the push block is movably hinged on the lower bottom surface of the pedal; a return torsion spring is arranged at the connection between the pedal and the telescopic column;

[0025] Note: By pressing down the pedal, the push rod presses down the push block, and the card block is engaged with the card slot on the positioning cone. The positioning cone penetrates the base and is inserted into the soil, ensuring the support stability of the bracket and the stable progress of water sample collection.

[0026] The method of use of the present invention comprises the following steps:

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

[0028] S2. Rotate the telescopic crossbar to place the mounting sleeve, the annular sampling tube and the counterweight seat above the water surface;

[0029] S3, rotating the first winding disk, and using the first cable to release the sleeve, the annular sampling tube and the counterweight seat into the river water body;

[0030] S4, move the slide seat so that the liquid guide tube passes through the insertion hole and is inserted into the collection bottle, turn on the sampling pump, and the water sample enters the inside of the annular sampling tube through the injection head, and finally enters the collection bottle through the catheter;

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

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

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

[0034] Second, the present invention uses a lifting frame to connect each installation sleeve, so that each installation sleeve is automatically unfolded during use, so that water samples can be collected at different depths of the same sampling water area at the same time, which improves the efficiency of water sample collection and reduces the output of manpower and material resources; at the same time, after each lifting frame is retracted, the volume of the device is reduced, and the portability and operability of the device are improved;

[0035] Third, during use of the device of the present invention, workers do not need to come into contact with water samples, which reduces the harm caused to workers by polluted water on the one hand, and can also prevent water samples from being contaminated by external factors and affecting the detection results of water samples on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0040] Figure 5 It is a schematic diagram of the connection between the first winding disc, the second winding disc and the telescopic cross bar of the present invention;

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

[0042] Figure 7 It is a schematic structural diagram of a collecting bottle of the present invention;

[0043] Figure 8 It is a schematic diagram of the connection between the positioning assembly and the telescopic column of the present invention;

[0044] Fig. 9 It is a schematic diagram of the connection between the push block and the positioning cone of the present invention;

[0045] Among them, 1- bracket, 10- base, 11- telescopic column, 12- telescopic cross bar, 13- limit plate, 2- sampling assembly, 20- installation sleeve, 21- annular sampling tube, 210- injection head, 22- sampling pump, 220- slide seat, 221- guide tube, 23- counterweight seat, 230- first sleeve, 231- second sleeve, 232- sliding plate, 24- lifting frame, 240- limit beam, 2400- storage strap, 3- retractable assembly, 30- installation plate, 31- first winding disk, 310- gear groove, 32- first cable, 33- second winding disk, 34- second cable, 35 -operating rod, 350-connecting gear, 351-plug-in rod, 3510-locking spring, 352-locking ring, 4-collecting assembly, 40-transfer box, 400-insertion hole, 41-collecting bottle, 410-piston plate, 411-movable tube, 4110-injection slot, 412-disassembly seat, 413-first compression spring, 414-sealing tube, 4140-connecting slot, 415-second compression spring, 5-positioning assembly, 50-positioning cone, 500-card slot, 501-guide seat, 51-pushing block, 510-card block, 511-reset spring, 52-pedal, 53-retaining sleeve, 54-push rod. DETAILED DESCRIPTION

[0046] Example 1

[0047] like Figure 1 , 5 A non-contact portable sampling device for polluted water bodies shown in the figure comprises a bracket 1 and a sampling assembly 2, a retractable assembly 3, and a collecting assembly 4 arranged on the bracket 1; the retractable assembly 3 and the collecting assembly 4 are respectively connected to the sampling assembly 2; the bracket 1 comprises a base 10, a telescopic column 11 arranged on the base 10, and a telescopic cross bar 12 rotatably connected to the top of the telescopic column 11; a limit plate 13 is arranged at one end of the telescopic cross bar 12 away from the telescopic column 11;

[0048] like Figure 1 , 3 As shown in , 8, the sampling assembly 2 includes a mounting sleeve 20, an annular sampling tube 21 arranged on the inner wall of the mounting sleeve 20, and a sampling pump 22 slidably connected to the telescopic column 11 through a slide 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, and a sampling head 210 is arranged inside the annular sampling tube 21; the input end of the sampling pump 22 is connected to the annular sampling tube 21 through a catheter, and the output end of the sampling pump 22 is provided with a liquid guide tube 221;

[0049] like Figure 1 , 6As shown, the retractable assembly 3 includes a mounting plate 30 disposed at one end of the telescopic cross bar 12 close to the telescopic column 11 and a first winding drum 31 rotatably connected to the mounting plate 30; a first cable 32 is wound around the first winding drum 31, and a free end of the first cable 32 passes through the limiting plate 13 and is connected to the mounting sleeve 20;

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

[0051] Example 2

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

[0053] like Figure 2 As shown, five mounting sleeves 20 are arranged in parallel up and down, and two adjacent mounting sleeves 20 are connected by a lifting frame 24, and a limiting crossbeam 240 is provided between two adjacent mounting sleeves 20 and is slidably engaged 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 installation sleeve 20;

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

[0056] Example 3

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

[0058] like Figure 4 As shown, a first sleeve 230 is provided at the top of the counterweight seat 23, and a second sleeve 231 sleeved inside the first sleeve 230 is provided on the bottom surface of the installation sleeve 20 located at the top; a sliding plate 232 penetrating the second sleeve 231 and connected to the first sleeve 230 is provided inside the second sleeve 231, and the sliding plate 232 is slidably engaged with the second sleeve 231;

[0059] like Figure 5 As shown, the retractable assembly 3 further includes a second winding disc 33 rotatably connected to the mounting plate 30, a second cable 34 is wound around the second winding disc 33, and a free end of the second cable 34 passes through the limiting plate 13 and is connected to the sliding plate 232;

[0060] The second cable 34 is used to release the sliding plate 232, so that the first sleeve 230 slides downward along the second sleeve 231, and the counterweight seat 23 is released into the water body, thereby preventing the sampling component 2 from swinging under the impact of water flow during use, thereby improving the reliability of the present invention.

[0061] Example 4

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

[0063] like Figure 6 As shown, an operating rod 35 movably connected to the mounting plate 30 is sleeved inside the first winding disc 31, a gear groove 310 is provided inside the first winding disc 31, and a connecting gear 350 meshingly connected to the gear groove 310 is sleeved on the operating rod 35; a plug-in rod 351 fixedly connected to the mounting plate 30 is slidably engaged inside the operating rod 35, and a locking spring 3510 abutting against the inner wall of the operating rod 35 is sleeved on the plug-in rod 351; a locking ring 352 capable of being clamped to the mounting plate 30 is provided at one end of the operating rod 35 close to the mounting plate 30; an operating rod 35 is also provided inside the second winding disc 33;

[0064] When it is necessary to release or tighten the first cable 32, the operating rod 35 is pulled out from the plug rod 351, so that the locking ring 352 is disengaged from the mounting plate 30. At this time, the operating rod 35 is rotated to drive the first winding disk 31 to rotate by the meshing action of the connecting gear 350 and the gear groove 310; when the operating rod 35 is released, the operating rod 35 moves along the plug rod 351 under the action of the locking spring 3510, so that the locking ring 352 is engaged and locked with the mounting plate 30, thereby preventing the first winding disk 31 from rotating during use, thereby 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 clamped at the bottom of the collecting bottle 41, and a movable tube 411 penetrating the top of the collecting bottle 41 is sleeved on the piston plate 410, and a sample injection slot 4110 is arranged below the side wall of the movable tube 411; a disassembly seat 412 threadedly connected to the collecting bottle 41 is arranged above the outer side wall of the movable tube 411; a first compression spring 413 abutting against the piston plate 410 is sleeved on the outside of the movable tube 411; a sealing tube 414 with a closed bottom end is sleeved inside the movable tube 411, and a second compression spring 415 abutting against the bottom of the collecting bottle 41 is arranged below the sealing tube 414; a connecting slot 4140 capable of conducting with the sample injection slot 4110 is arranged below the side wall of the sealing tube 414;

[0068] When the water sample enters the collecting bottle 41 through the injection 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 preventing the air in the sampling bottle 41 from contaminating the water sample; when the liquid guide tube 221 is inserted into the movable tube 411 and squeezes the sealing tube 414, the sealing tube 414 moves downward along the movable tube 411, the connecting slot 4140 overlaps with the injection 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 connecting slot 4140 and the injection slot 4110 are staggered, preventing the water sample from flowing out during the movement of the collecting bottle 41; and the first compression spring 413 is set to enable the water sample inside the collecting bottle 41 to flow out quickly.

[0069] Example 6

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

[0071] like Figure 1 , 8 9, it also includes a positioning assembly 5 arranged on the telescopic column 11; the positioning assembly 5 includes a positioning cone 50 that is slidably clamped inside the telescopic column 11 and passes through the base 10, a pushing block 51 that is slidably clamped on the outer wall of the telescopic column 11 and can be connected to the positioning cone 50, and a pedal 52 that is movably hinged on the outer wall of the telescopic column 11 and connected to the pushing block 51; a plurality of card slots 500 are arranged on the outer wall of the positioning cone 50 along its length direction; a push block 51 is sleeved with a positioning cone 50 that is connected to the telescopic column 11 slidingly engaged with a retaining sleeve 53; a clamping block 510 capable of engaging with the clamping groove 500 is provided at one end of the pushing block 51 close to the positioning cone 50, and a return spring 511 abutting against the retaining sleeve 53 is sleeved at one end of the pushing block 51 away from the positioning cone 50; a push rod 54 movably hinged to the bottom surface of the pedal 52 and movably hinged to the pushing block 51; a return torsion spring is provided at the connection between the pedal 52 and the telescopic column 11; a guide seat 501 slidably engaged with the positioning cone 50 is provided on the inner wall of the telescopic column 11;

[0072] By pressing down the pedal 52, the push rod 54 presses down the push block 51, and the block 510 is engaged with the slot 500 on the positioning cone 50. The positioning cone 50 passes through the base 10 and is inserted into the soil, thereby ensuring the support stability between 1 and ensuring the stable progress of the water sample collection work; by setting the guide seat 501, the positioning cone 50 can be prevented from swinging, thereby improving the stability of the block 510 when it is engaged with the slot 500.

[0073] Example 7

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

[0075] like Figure 2As shown, each limiting beam 240 is provided with a storage strap 2400;

[0076] The storage straps 2400 can be used to tighten each of the limiting beams 240, which is beneficial to improving the convenience of the present invention during transportation.

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

Claims

1. A non-contact portable sampling device for polluted water, characterized in that: It comprises a support (1) and a sampling component (2), a retractable component (3), and a collecting component (4) arranged on the support (1); the retractable component (3) and the collecting component (4) are respectively connected to the sampling component (2); The sampling assembly (2) comprises a mounting sleeve (20), an annular sampling tube (21) arranged on the inner side wall of the mounting sleeve (20), and a sampling pump (22) slidably connected to the bracket (1) via a sliding seat (220); a counterweight seat (23) is arranged below the mounting sleeve (20); an injection head (210) is arranged inside the annular sampling tube (21); the input end of the sampling pump (22) is connected to the annular sampling tube (21) via a catheter, and the output end of the sampling pump (22) is provided with a liquid guide tube (221); The retractable assembly (3) comprises a mounting plate (30) arranged on the bracket (1) and a first winding disc (31) rotatably clamped on the mounting plate (30); a first cable (32) is wound around the first winding disc (31), and a free end of the first cable (32) is connected to the mounting sleeve (20); The collecting assembly (4) comprises a transfer box (40) movably arranged on a support (1) and a collecting bottle (41) arranged inside the transfer box (40); an insertion hole (400) corresponding to the position of the collecting bottle (41) is provided through the top of the transfer box (40).

2. A non-contact portable sampling device for polluted water according to claim 1, characterized in that: The bracket (1) comprises a base (10), a telescopic column (11) arranged on the base (10), and a telescopic cross bar (12) rotatably connected to the top of the telescopic column (11); a limiting plate (13) is provided at one end of the telescopic cross bar (12) away from the telescopic column (11).

3. A non-contact portable sampling device for polluted water according to claim 1, characterized in that: A plurality of the installation sleeves (20) are arranged in parallel up and down, and two adjacent installation sleeves (20) are connected by a lifting frame (24). A limiting crossbeam (240) is arranged between the two adjacent installation sleeves (20) and is slidably engaged with the lifting frame (24). The number of the annular sampling tube (21), the sampling pump (22) and the collecting bottle (41) corresponds to the number of the installation sleeves (20).

4. A non-contact portable sampling device for polluted water according to claim 3, characterized in that: The top of the counterweight seat (23) is provided with a first sleeve (230), and the bottom surface of the uppermost mounting sleeve (20) is provided with a second sleeve (231) sleeved inside the first sleeve (230); the second sleeve (231) is provided with a sliding plate (232) penetrating the second sleeve (231) and connected to the first sleeve (230), and the sliding plate (232) is slidably engaged with the second sleeve (231); The retractable assembly (3) further comprises a second winding disc (33) rotatably clamped on the mounting plate (30), a second cable (34) being wound around the second winding disc (33), a free end of the second cable (34) passing through the limiting plate (13) and then connected to the sliding plate (232).

5. A non-contact portable sampling device for polluted water according to claim 4, characterized in that: An operating rod (35) movably engaged with the mounting plate (30) is sleeved inside the first winding disk (31), a gear groove (310) is provided inside the first winding disk (31), and a connecting gear (350) meshingly connected with the gear groove (310) is sleeved on the operating rod (35); a plug-in rod (351) fixedly connected with the mounting plate (30) is slidably engaged inside the operating rod (35), and a locking spring (3510) abutting against the inner wall of the operating rod (35) is sleeved on the plug-in rod (351); a locking ring (352) capable of being engaged with the mounting plate (30) is provided at one end of the operating rod (35) close to the mounting plate (30); the operating rod (35) is also provided inside the second winding disk (33).

6. A non-contact portable sampling device for polluted water according to claim 1, characterized in that: A piston plate (410) is slidably engaged with the bottom of the collecting bottle (41), and a movable tube (411) penetrating the top of the collecting bottle (41) is sleeved on the piston plate (410), and a sample injection groove (4110) is arranged below the side wall of the movable tube (411); and a disassembly seat (412) threadedly connected to the collecting bottle (41) is arranged above the outer side wall of the movable tube (411).

7. A non-contact portable sampling device for polluted water according to claim 5, characterized in that: The movable tube (411) is externally sleeved with a first compression spring (413) abutting against the piston plate (410); the movable tube (411) is internally sleeved with a sealing tube (414) with a closed bottom end, and a second compression spring (415) abutting against the bottom of the collecting bottle (41) is provided below the sealing tube (414); and a connecting groove (4140) capable of communicating with the injection groove (4110) is provided below the side wall of the sealing tube (414).

8. A non-contact portable sampling device for polluted water according to claim 2, characterized in that: The invention also comprises a positioning assembly (5) arranged on the telescopic column (11); the positioning assembly (5) comprises a positioning cone (50) slidably engaged with the inside of the telescopic column (11) and penetrating the base (10), a pushing block (51) slidably engaged with the outer wall of the telescopic column (11) and capable of being connected to the positioning cone (50), and a pedal (52) movably hinged on the outer wall of the telescopic column (11) and connected to the pushing block (51); a plurality of slots (500) are arranged on the outer wall of the positioning cone (50) along its length direction; A retaining sleeve (53) is sleeved on the push block (51) and is slidably engaged with the telescopic column (11); a clamping block (510) capable of being engaged with the clamping groove (500) is provided at one end of the push block (51) close to the positioning cone (50); a return spring (511) is sleeved on one end of the push block (51) away from the positioning cone (50) and is abutted against the retaining sleeve (53); a push rod (54) is movably hinged on the lower surface of the pedal (52) and is movably hinged to the push block (51); and a return torsion spring is provided at the connection between the pedal (52) and the telescopic column (11).

9. A non-contact portable sampling device for polluted water according to claim 1, characterized in that: The bottom of the collecting bottle (41) is slidably connected with a piston plate (410), a movable tube (411) and a disassembly seat (412).

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