A method for sampling water bodies used in environmental engineering

Abstract

The present invention discloses a method for detecting and sampling water bodies for environmental engineering, wherein a plurality of sampling tubes are provided, and the plurality of sampling tubes are equidistantly arrayed and installed on the front side of a casing, and the present invention relates to the field of water body detection technology. The method for detecting and sampling water bodies for environmental engineering, by providing an auxiliary support mechanism, a synchronous opening and closing mechanism and a stop mechanism between the casing and the sampling tube, enables the device to easily float and be placed vertically in the water body through the coordinated cooperation of the auxiliary support mechanism, the synchronous opening and closing mechanism and the stop mechanism during sampling, thereby avoiding the problem that the device will have a large falling gravity during the sampling process, which will cause the manual holding to be more tiring, and simultaneously centrally control the opening and closing of the sampling tube that has reached a preset depth, so that the sampling tube can smoothly obtain water samples of different depths, and synchronously promote the stopping cooperation of the reel in the auxiliary support mechanism through the disassembly of the sampling tube.

Description

Technical Field

[0001] The invention relates to the technical field of water body detection, and in particular to a water body detection sampling method for environmental engineering. Background Art

[0002] Human beings cannot live without water in their lives and production activities. The quality of drinking water is closely related to human health. With the development of social economy, scientific progress and the improvement of people's living standards, people's requirements for the quality of drinking water are constantly increasing, and the drinking water quality standards are also constantly developing and improving accordingly. In order to better protect the water environment, it is necessary to regularly sample and test water bodies.

[0003] Freshwater sampling is an important step in detecting water quality. In order to facilitate the sampling of water bodies at different depths, current technology usually uses a longer straight rod and a sampling container to sample water bodies. Although this method can achieve the effect of water sampling, it is inevitable that there are still some shortcomings in its actual use. For example, the device lacks an auxiliary support mechanism for straightening, which leads to the problem of laborious holding the sample when manually using a straight rod and a sampling container to sample water bodies. In order to avoid such problems, a water body detection sampling method for environmental engineering is proposed to solve the existing problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for detecting and sampling water bodies for use in environmental engineering, which solves the problem that the device lacks an auxiliary support mechanism for straightening, resulting in the difficulty in holding the sample when manually using a straight rod and a sampling container to sample the water body.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for detecting and sampling water bodies for environmental engineering, specifically comprising the following steps:

[0006] Step 1: Assemble and lower. Through the cooperation of the plug rod, the card block, the slot and the card slot in the synchronous opening and closing mechanism, multiple sampling tubes are installed in different positions on the front side of the casing in sequence. Then, the device is carried to the designated sampling waters by boat and slowly inserted into the water. During the assembly of the sampling tube, the limit of the reel is released synchronously through the stop mechanism;

[0007] Step 2: With auxiliary support, insert the casing vertically into the water. As the casing descends, the sampling tube is pushed into different layers of water until the floating plate on the casing surface floats to the water surface. Then, the reel is rotated in the opposite direction to push the pull rope carrying the weight ball vertically down into the water by gravity.

[0008] Step 3: Multi-depth sampling: When the pull rope carries the weight ball downward, the pull rope simultaneously lowers the inclined block, which causes the inclined block to link the synchronous opening and closing mechanism, thereby opening the sampling inlets of multiple sampling tubes. After sampling is completed, the rewinding wheel is reset to rotate the number of circles, causing the sampling tube to automatically take samples and seal them;

[0009] Step 4: Split the limiter. After extracting the device from the water, press the pressure rods at different heights in turn to remove the sampling tube from the surface of the casing. When the sampling tube is removed, the stop mechanism is used to limit the winding wheel.

[0010] Preferably, there are a plurality of sampling tubes, and the plurality of sampling tubes are installed in an equidistant array on the front side of the sleeve, an auxiliary support mechanism is provided inside the sleeve, a synchronous opening and closing mechanism is provided between the auxiliary support mechanism and the sampling tube, and a stopping mechanism is provided between the synchronous opening and closing mechanism, the sleeve and the auxiliary support mechanism.

[0011] Preferably, the auxiliary support mechanism includes a rotating rod, which is rotatably arranged at the top of the sleeve through a bracket, and the surface of the rotating rod is fixedly connected to a winding wheel, and a pull rope is wound and rolled up on the surface of the winding wheel, and the surface of the pull rope is fixedly connected to an interference block that is slidably adapted to the sleeve, the bottom end of the pull rope is fixedly connected to a counterweight ball, and the surface of the sleeve is fixedly connected to a floating plate.

[0012] Preferably, the synchronous opening and closing mechanism includes a centralized control plate, which is elastically slidably arranged on the front side of the sleeve, and a guide roller is rotatably arranged on the rear side of the centralized control plate through a bracket, and the guide roller slides and extends to the interior of the sleeve, and the rear side of the inner cavity of the sampling tube is fixedly connected with a corrugated telescopic sleeve, and the front side of the inner cavity of the corrugated telescopic sleeve is fixedly connected with a movable rod used in conjunction with the centralized control plate, and one end of the movable rod passes through the corrugated telescopic sleeve and extends to the interior of the sampling tube, and one end of the movable rod extending to the interior of the sampling tube is fixedly connected with a blocking plate used in conjunction with the sampling tube through a bracket, both sides of the rear side of the sampling tube are fixedly connected with a plug rod, and one end of the plug rod slides and extends to the interior of the sleeve, a card block is slidably connected to the interior of the plug rod, and a first spring is fixedly connected between the card block and the bottom of the inner cavity of the plug rod, and both sides of the front side of the sleeve are provided with slots slidably matched with the plug rod, and a plurality of slots are provided in a vertically equidistant array, and a card slot used in conjunction with the card block is provided at the top of the inner cavity of the slot.

[0013] Preferably, the stopping mechanism includes a slide slot plate, two slide slot plates are provided, and the two slide slot plates are respectively fixedly arranged on both sides of the rear side of the inner cavity of the sleeve, the slide slot plate is slidably connected with a sliding block inside the slide slot plate, the sliding block and the slide slot plate are fixedly connected, the front side of the sliding block is fixedly connected with a rear vertical plate, guide slots are provided on both sides of the inner cavity of the sleeve, and guide blocks are slidably connected with the guide slots inside the guide slots, the opposite sides of the two guide blocks are fixedly connected with the front vertical plate, the opposite sides of the front vertical plate and the rear vertical plate on the same side are fixedly connected with trapezoidal blocks, and the two adjacent trapezoidal blocks are staggered and reversely arranged, the two sides of the surface of the winding wheel are fixedly connected with gears, and the top of the rear vertical plate is fixedly connected with a tooth plate meshing with the gear.

[0014] Preferably, the top and bottom of the front side of the sleeve are fixedly connected to the first sleeve, the interior of the first sleeve is slidably connected to the first telescopic rod, and the front side of the first telescopic rod is fixedly connected to the rear side of the control panel, and a first return spring is fixedly connected between the first telescopic rod and the first sleeve.

[0015] Preferably, the top and bottom of the rear side of the sampling tube are fixedly connected to the second sleeve through a bracket, the interior of the second sleeve is slidably connected to the second telescopic rod, and the front side of the second telescopic rod is fixedly connected to the front side of the inner cavity of the corrugated telescopic sleeve, and a second return spring is fixedly connected between the second telescopic rod and the second sleeve.

[0016] Preferably, the bottom of the sampling cylinder is connected to a sampling short tube, and the outer surface of the sampling short tube is threadedly connected to a sealing cap by means of a thread.

[0017] Preferably, a pressure rod is fixedly connected to the front side of the clamping block and located inside the insertion rod.

[0018] Preferably, a guide slot is provided at the rear side of the abutting inclined block, a guide slider is slidably connected inside the guide slot, and the rear side of the guide slider is fixedly connected to the rear side of the inner cavity of the sleeve. Beneficial Effects

[0019] The present invention provides a method for detecting and sampling water bodies used in environmental engineering. Compared with the existing technology, it has the following beneficial effects:

[0020] (1) The water body detection sampling method for environmental engineering uses an auxiliary support mechanism, a synchronous opening and closing mechanism, and a stop mechanism to be arranged between the casing and the sampling tube. When the device is sampling, the auxiliary support mechanism, the synchronous opening and closing mechanism, and the stop mechanism cooperate with each other to enable the casing and the sampling tube to be easily floated and placed vertically in the water body, thereby avoiding the problem that the device will have a large falling gravity during the sampling process, which will cause the manual holding to be more tiring. The sampling tube that reaches the preset depth is opened and closed by centralized control, so that the sampling tube can smoothly take water samples at different depths. The sampling tube is disassembled synchronously to enable the reel in the auxiliary support mechanism to stop and cooperate, thereby avoiding the problem that the reel is easy to rotate accidentally during the idle period and release the pull rope.

[0021] (2) The water body detection sampling method for environmental engineering is to set a bellows telescopic sleeve on the rear side of the sampling tube so that the movable rod and the sealing plate that cooperate with the sampling tube can be opened and closed by the telescopic state of the bellows telescopic sleeve without affecting the sealing cooperation on the rear side of the sampling tube.

[0022] (3) The water body detection sampling method for environmental engineering is to set a guide roller at the rear side of the central control plate so that when the central control plate changes to different matching states with the abutment inclined block at different positions, the friction resistance can be reduced by rotating the guide roller.

[0023] (4) The water body detection sampling method for environmental engineering uses a pressure rod fixedly arranged on the front side of the card block and inside the insertion rod, so that the card block can be pressed from the outside of the pressure rod, which makes it easy for the card block to disengage from the limit fit in the card slot, thereby facilitating the overall disassembly of the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the flow chart of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the external structure of the present invention;

[0026] Figure 3 is a side view of the sleeve structure of the present invention;

[0027] Figure 4 For the present invention Figure 2 A partial enlarged view of the middle A;

[0028] Figure 5 It is a side view of the internal structure of the sleeve of the present invention;

[0029] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 7 For the present invention Figure 5 A partial enlarged view of point C in the middle;

[0031] Figure 8 A top view of the internal structure of the casing of the present invention;

[0032] Fig. 9 A side view of the internal structure of the sleeve of the present invention;

[0033] Fig.10 It is a schematic diagram of the synchronous opening and closing mechanism structure of the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of the stop mechanism of the present invention;

[0035] Fig.12 It is a schematic diagram of the structure of the stop mechanism of the present invention.

[0036] In the figure: 1, casing; 2, sampling tube; 3, auxiliary support mechanism; 301, rotating rod; 302, winding wheel; 303, pull rope; 304, contact inclined block; 305, counterweight ball; 306, floating plate; 4, synchronous opening and closing mechanism; 401, control panel; 402, guide roller; 403, corrugated telescopic sleeve; 404, movable rod; 405, blocking plate; 406, plug rod; 407, block; 408, first spring; 409, slot; 410, slot; 5, stop Mechanism; 501, slide plate; 502, sliding block; 503, second spring; 504, rear vertical plate; 505, guide groove; 506, guide block; 507, front vertical plate; 508, trapezoidal block; 509, gear; 510, tooth plate; 6, first sleeve; 7, first telescopic rod; 8, first return spring; 9, second sleeve; 10, second telescopic rod; 11, second return spring; 12, sampling short tube; 13, pressure rod; 14, guide slide groove; 15, guide slider. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] See also Figure 1-12 The present invention provides a technical solution: a method for detecting and sampling water bodies used in environmental engineering, which specifically comprises the following steps:

[0039] Step 1, assemble and lower. Through the cooperation of the plug rod 406, the block 407, the slot 409 and the slot 410 in the synchronous opening and closing mechanism 4, multiple sampling tubes 2 are installed in different positions on the front side of the casing 1 in sequence. Then, the device is carried to the designated sampling waters by boat and slowly inserted into the water. During the assembly of the sampling tube 2, the stopper mechanism 5 is used to release the limit of the winding wheel 302, and the sampling tube 2 is installed backward. The sampling tube 2 moves backward to drive the plug rod 406 to align with the slot 409, and the plug rod 406 is inserted into the slot 409. During the process of the plug rod 406 entering the slot 409, the block 407 inside the plug rod 406 will elastically engage with the inside of the slot 410 at the top of the inner cavity of the slot 409. The sampling tube 2 drives the plug rod 406 to move backward, and at the same time, it drives the movable rod 404 to be squeezed and contacted with the centralized control board 401, and the sleeve 1 and the plug rod 406 continue to move, so that the movable rod 404 is elastically stored in the original position;

[0040] When the insertion rod 406 is inserted into the slot 409 and enters the interior of the sleeve 1, the insertion rod 406 presses the front vertical plate 507 backwards, and the front vertical plate 507 moves backwards to drive the trapezoidal block 508, and the two trapezoidal blocks 508 are interlaced to squeeze the rear vertical plate 504 to drive the tooth plate 510 to move downward, and the tooth plate 510 moves downward to disengage the meshing limit match with the gear 509;

[0041] Step 2: With auxiliary support, insert the casing 1 vertically into the water. As the casing 1 descends, the sampling tube 2 is pushed into different layers of water until the floating plate 306 on the surface of the casing 1 floats to the water surface. Then, the reel 302 is rotated in the opposite direction to push the pull rope 303 carrying the weight ball 305 vertically down into the water by gravity. When the floating plate 306 floats on the water surface, the rotating rod 301 and the reel 302 are rotated. The reel 302 rotates to release the length of the pull rope 303, and the corresponding weight ball 305 is gravity-dropped, so that the casing 1 is vertically in the water.

[0042] Step 3: Multi-depth sampling. During the process of lowering the counterweight ball 305 with the pull rope 303, the pull rope 303 simultaneously lowers the oblique block 304, prompting the oblique block 304 to link with the synchronous opening and closing mechanism 4, thereby opening the sampling entrances of multiple sampling tubes 2. After the sampling is completed, the resetting winding wheel 302 rotates a number of circles, prompting the sampling tube 2 to automatically sample and seal. During the process of lowering the counterweight ball 305 with the pull rope 303, the pull rope 303 simultaneously drives the oblique block 304 to move downward, and as the oblique block 304 moves downward, it is squeezed by the oblique block 304. The contacting guide roller 402 will elastically move backward and reset to the inclined surface of the inclined block 304. The guide roller 402 moves backward and drives the control panel 401 to move backward. The control panel 401 moves backward and squeezes and contacts the movable rod 404, and elastically moves backward and resets accordingly. The movable rod 404 moves backward and drives the blocking plate 405 to disengage the blocking cooperation with the inlet of the sampling tube 2, thereby prompting the sampling tube 2 to start sampling. After the sampling is completed, the pull rope 303 is reset to the number of winding turns, and the corresponding height of the inclined block 304 is automatically reset. The movable rod 404 continues to push the blocking plate 405 to block the sampling tube 2.

[0043] Step 4, split limit, after extracting the device from the water, press the pressure rods 13 at different heights in turn to force the sampling tube 2 to be removed from the surface of the casing 1. The sampling tube 2 is removed and the winding wheel 302 is limited by the stopping mechanism 5 at the same time. After the device is taken ashore, press the pressure rod 13 to force the pressure rod 13 to drive the block 407 to disengage from the slot 410, and then pull out the sampling tube 2 and the insertion rod 406. After the insertion rod 406 is pulled out, the rear vertical plate 504 that loses the squeezing force is reset in height, and the front vertical plate 507 slides forward and resets through the offset squeezing between the trapezoidal blocks 508 accordingly. The rear vertical plate 504 rises and resets, driving the tooth plate 510 and the gear 509 to engage and limit, so that the winding wheel 302 in the winding state is stopped.

[0044] As a preferred embodiment: in order to reduce the weight of the device and improve the vertical placement effect of the device, and avoid the device being tilted and swung due to the flow of water in the water, which makes it inconvenient to hold the device manually, a plurality of sampling tubes 2 are provided, and a plurality of sampling tubes 2 are equidistantly arranged in an array on the front side of the sleeve 1, the bottom of the sampling tube 2 is connected to a sampling short tube 12, and the outer surface of the sampling short tube 12 is connected to a sealing cap by threading, and an auxiliary support mechanism 3 is provided inside the sleeve 1, and the auxiliary support mechanism 3 includes a rotating rod 301, and the rotating rod 301 is supported by a support The frame is rotatably arranged on the top of the sleeve 1, and the surface of the rotating rod 301 is fixedly connected to the winding wheel 302, and the surface of the winding wheel 302 is wound with a pull rope 303, and the surface of the pull rope 303 is fixedly connected to an abutment block 304 slidably adapted to the sleeve 1, and the bottom end of the pull rope 303 is fixedly connected to a counterweight ball 305, and the surface of the sleeve 1 is fixedly connected to a floating plate 306, and a guide groove 14 is opened on the rear side of the abutment block 304, and the guide slide block 15 is slidably connected inside the guide groove 14, and the rear side of the guide slide block 15 is fixedly connected to the rear side of the inner cavity of the sleeve 1.

[0045] As a preferred embodiment: in order to facilitate the synchronous opening and closing sampling of multiple sampling tubes 2 at different heights, a synchronous opening and closing mechanism 4 is arranged between the auxiliary support mechanism 3 and the sampling tube 2, and the synchronous opening and closing mechanism 4 includes a central control plate 401, and the central control plate 401 is elastically slidably arranged on the front side of the sleeve 1, and the top and bottom of the front side of the sleeve 1 are fixedly connected with a first sleeve 6, and the first sleeve 6 is internally slidably connected with a first telescopic rod 7, and the front side of the first telescopic rod 7 is fixedly connected to the rear side of the central control plate 401, and a first return spring 8 is fixedly connected between the first telescopic rod 7 and the first sleeve 6, and a guide roller 402 is arranged on the rear side of the central control plate 401 through the rotation of the bracket, and the guide roller 402 slides and extends to the interior of the sleeve 1, and a corrugated telescopic sleeve 403 is fixedly connected to the rear side of the inner cavity of the sampling tube 2. As a detailed explanation: the folded section of the corrugated telescopic sleeve 403 is made of rubber, and the front side of its inner cavity is made of hard metal. The front side of the inner cavity of the bellows telescopic sleeve 403 is fixedly connected with a movable rod 404 used in conjunction with the central control board 401, and one end of the movable rod 404 passes through the bellows telescopic sleeve 403 and extends to the interior of the sampling tube 2, and one end of the movable rod 404 extending to the interior of the sampling tube 2 is fixedly connected with a blocking plate 405 used in conjunction with the sampling tube 2 through a bracket, and both sides of the rear side of the sampling tube 2 are fixedly connected with an insertion rod 406, and one end of the insertion rod 406 slides and extends to the interior of the sleeve 1, and a card block 407 is slidably connected to the interior of the insertion rod 406, and a first spring 408 is fixedly connected between the card block 407 and the bottom of the inner cavity of the insertion rod 406, and both sides of the front side of the sleeve 1 are provided with slots 409 slidably matched with the insertion rod 406, and a plurality of slots 409 are provided in a vertically equidistant array, and a card slot 410 used in conjunction with the card block 407 is provided at the top of the inner cavity of the slot 409;

[0046] As a detailed explanation: a pressure rod 13 is fixedly connected to the front side of the block 407 and located inside the insertion rod 406, the top and bottom of the rear side of the sampling tube 2 are fixedly connected to the second sleeve 9 through a bracket, the second sleeve 9 is slidably connected to the inside of the second telescopic rod 10, and the front side of the second telescopic rod 10 is fixedly connected to the front side of the inner cavity of the corrugated telescopic sleeve 403, and a second return spring 11 is fixedly connected between the second telescopic rod 10 and the second sleeve 9.

[0047] As a preferred embodiment: In order to facilitate the corresponding stopping and unstopping of the winding wheel 302 in the synchronous state, and restore the free rotation state, a stopping mechanism 5 is arranged between the synchronous opening and closing mechanism 4, the sleeve 1 and the auxiliary support mechanism 3, and the stopping mechanism 5 includes a slide plate 501, two slide plates 501 are arranged, and the two slide plates 501 are respectively fixedly arranged on both sides of the rear side of the inner cavity of the sleeve 1, and the inner sliding connection of the slide plate 501 is connected with a sliding block 502, and a second spring 503 is fixedly connected between the sliding block 502 and the slide plate 501, and the sliding block The front side of 502 is fixedly connected to a rear vertical plate 504, guide grooves 505 are provided on both sides of the inner cavity of the sleeve 1, and guide blocks 506 are slidably connected inside the guide grooves 505. The two guide blocks 506 are fixedly connected to the front vertical plates 507 on opposite sides, and the front vertical plates 507 and the rear vertical plates 504 on the same side are fixedly connected to the opposite sides, and the two adjacent trapezoidal blocks 508 are staggered and reversely arranged, and gears 509 are fixedly connected to both sides of the surface of the winding wheel 302, and the top of the rear vertical plate 504 is fixedly connected to a tooth plate 510 meshing with the gear 509.

Claims

1. A method for sampling water for environmental engineering, characterized in that: The specific steps include: Step 1: assemble and lower, through the cooperation of the insertion rod (406), the clamping block (407), the slot (409) and the clamping groove (410) in the synchronous opening and closing mechanism (4), a plurality of sampling tubes (2) are sequentially installed at different positions on the front side of the casing (1), and then the device is carried to the designated sampling water area by boat, and the device is slowly inserted into the water. During the assembly of the sampling tube (2), the limit of the winding wheel (302) is released synchronously through the stop mechanism (5); Step 2: With auxiliary support, the casing (1) is vertically inserted into the water. As the casing (1) descends, the sampling tube (2) is pushed into different layers of water until the floating plate (306) on the surface of the casing (1) floats to the water surface. Then, the reel (302) is rotated in the opposite direction, so that the pull rope (303) carrying the weight ball (305) vertically falls into the water due to gravity. Step 3: sampling at multiple depths. When the pull rope (303) carries the weighted ball (305) downward, the pull rope (303) simultaneously lowers the abutting inclined block (304), prompting the abutting inclined block (304) to link with the synchronous opening and closing mechanism (4), thereby opening the sampling inlets of the plurality of sampling tubes (2). After sampling is completed, the resetting reel (302) rotates a certain number of circles, prompting the sampling tubes (2) to automatically take samples and seal them. Step 4: Split and limit. After the device is extracted from the water, the pressure rods (13) at different heights are pressed in sequence to cause the sampling tube (2) to be removed from the surface of the casing (1). When the sampling tube (2) is removed, the stop mechanism (5) is used to limit the winding wheel (302).

2. A method for detecting and sampling water for environmental engineering according to claim 1, characterized in that: A plurality of sampling tubes (2) are provided, and the plurality of sampling tubes (2) are equidistantly arranged in an array on the front side of the casing (1); an auxiliary support mechanism (3) is provided inside the casing (1); a synchronous opening and closing mechanism (4) is provided between the auxiliary support mechanism (3) and the sampling tube (2); and a stop mechanism (5) is provided between the synchronous opening and closing mechanism (4), the casing (1) and the auxiliary support mechanism (3).

3. A method for detecting and sampling water for environmental engineering according to claim 2, characterized in that: The auxiliary support mechanism (3) comprises a rotating rod (301), the rotating rod (301) being rotatably arranged on the top of the sleeve (1) via a bracket, the surface of the rotating rod (301) being fixedly connected to a winding wheel (302), the surface of the winding wheel (302) being wound with a pull rope (303), the surface of the pull rope (303) being fixedly connected to an abutting inclined block (304) slidably matched with the sleeve (1), the bottom end of the pull rope (303) being fixedly connected to a counterweight ball (305), and the surface of the sleeve (1) being fixedly connected to a floating plate (306).

4. A method for detecting and sampling water for environmental engineering according to claim 2, characterized in that: The synchronous opening and closing mechanism (4) comprises a centralized control plate (401), the centralized control plate (401) being elastically slidably arranged on the front side of the sleeve (1), the rear side of the centralized control plate (401) being rotatably arranged with a guide roller (402) through a bracket, and the guide roller (402) slidingly extends into the interior of the sleeve (1), the rear side of the inner cavity of the sampling tube (2) being fixedly connected with a corrugated telescopic sleeve (403), the front side of the inner cavity of the corrugated telescopic sleeve (403) being fixedly connected with a movable rod (404) used in conjunction with the centralized control plate (401), and one end of the movable rod (404) passing through the corrugated telescopic sleeve (403) and extending into the interior of the sampling tube (2), and the end of the movable rod (404) extending into the interior of the sampling tube (2) being fixedly connected with the support The frame is fixedly connected with a blocking plate (405) matched with the sampling tube (2), and both sides of the rear side of the sampling tube (2) are fixedly connected with an insertion rod (406), and one end of the insertion rod (406) slides and extends into the interior of the sleeve (1), and a clamping block (407) is slidably connected to the interior of the insertion rod (406), and a first spring (408) is fixedly connected between the clamping block (407) and the bottom of the inner cavity of the insertion rod (406), and both sides of the front side of the sleeve (1) are provided with a slot (409) slidably matched with the insertion rod (406), and a plurality of slots (409) are arranged in a vertically equidistant array, and a clamping slot (410) matched with the clamping block (407) is provided at the top of the inner cavity of the slot (409).

5. The method for detecting and sampling water for environmental engineering according to claim 2, characterized in that: The stop mechanism (5) comprises a slide plate (501), two of which are provided, and the two slide plates (501) are respectively fixedly provided on two sides of the rear side of the inner cavity of the sleeve (1), a sliding block (502) is slidably connected inside the slide plate (501), a second spring (503) is fixedly connected between the sliding block (502) and the slide plate (501), a rear vertical plate (504) is fixedly connected to the front side of the sliding block (502), and guide grooves (505) are provided on both sides of the inner cavity of the sleeve (1). A guide block (506) is slidably connected inside the guide groove (505), and a front vertical plate (507) is fixedly connected to opposite sides of the two guide blocks (506). A trapezoidal block (508) is fixedly connected to opposite sides of the front vertical plate (507) and the rear vertical plate (504) on the same side, and two adjacent trapezoidal blocks (508) are staggered and arranged in opposite directions. Gears (509) are fixedly connected to both sides of the surface of the winding wheel (302), and a tooth plate (510) meshing with the gear (509) is fixedly connected to the top of the rear vertical plate (504).

6. A method for detecting and sampling water for environmental engineering according to claim 4, characterized in that: The top and bottom of the front side of the sleeve (1) are both fixedly connected to a first sleeve (6), the interior of the first sleeve (6) is slidably connected to a first telescopic rod (7), the front side of the first telescopic rod (7) is fixedly connected to the rear side of the centralized control panel (401), and a first return spring (8) is fixedly connected between the first telescopic rod (7) and the first sleeve (6).

7. A method for detecting and sampling water for environmental engineering according to claim 4, characterized in that: The top and bottom of the rear side of the sampling tube (2) are fixedly connected to a second sleeve (9) via a bracket, the interior of the second sleeve (9) is slidably connected to a second telescopic rod (10), and the front side of the second telescopic rod (10) is fixedly connected to the front side of the inner cavity of the corrugated telescopic sleeve (403), and a second return spring (11) is fixedly connected between the second telescopic rod (10) and the second sleeve (9).

8. The method for detecting and sampling water for environmental engineering according to claim 1, characterized in that: The bottom of the sampling cylinder (2) is connected to a sampling short tube (12), and the outer surface of the sampling short tube (12) is threadedly connected to a sealing cap by means of a thread.

9. A method for detecting and sampling water for environmental engineering according to claim 4, characterized in that: A pressure rod (13) is fixedly connected to the front side of the clamping block (407) and located inside the insertion rod (406).

10. The method for detecting and sampling water for environmental engineering according to claim 3, characterized in that: A guide slot (14) is provided on the rear side of the abutting inclined block (304), a guide slider (15) is slidably connected inside the guide slot (14), and the rear side of the guide slider (15) is fixedly connected to the rear side of the inner cavity of the sleeve (1).

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