Water quality sampling device for environmental engineering detection

Abstract

The utility model relates to the technical field of environmental detection, in particular to a water quality sampling device for environmental engineering detection, which comprises a water quality sampling mechanism for detection, a water quality sampling mechanism and a water quality sampling mechanism, the multi-channel peristaltic pump is fixed on one side of the inner wall of the cover plate of the storage box; the multi-layer sampling mechanism is fixed on the inner wall of the cover plate of the storage box, and the multi-layer sampling mechanism comprises a hose II. According to the multi-layer sampling device, the multi-layer sampling mechanism is matched with the multi-channel peristaltic pump, so that water areas with different depths can be sampled at the same time. Second hoses with different lengths are wound on each sampling mechanism, and the lengths of the second hoses are determined according to working requirements and sampling depth. The multi-channel peristaltic pump serves as a power source to extrude the first hose and drive the second hose to collect water samples at the same time, the mode that water samples of different depths need to be obtained through multiple times of operation in the past is changed, time and manpower are saved, the time and space consistency of water sample collection is guaranteed, and the accuracy and comparability of detection results are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental detection technical field, concretely is water quality sampling device for environmental engineering detection. BACKGROUND

[0002] In the field of environmental engineering detection, water quality detection is a crucial link, and accurate water sampling is of key significance for comprehensive assessment of water quality, monitoring of environmental pollution and development of scientific and reasonable environmental protection measures. However, the existing water quality sampling device has some problems in practical application.

[0003] At present, part of water quality sampling device is difficult to realize the synchronous collection of water sample of different depth water area, and often needs multiple operations to obtain water sample of different depth, which not only consumes a lot of time and manpower, but also easily leads to the inconsistency of water sample collection time and space, affecting the accuracy and comparability of detection results.

[0004] And the existing device is easy to be affected by the local bending of itself during winding storage in the sampling process, and is not easy to accurately reach the water area of the specified depth, resulting in inaccurate sampling position, and further affecting the reliability of the detection result. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a water quality sampling device for environmental engineering detection to solve the problems in the above background.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A water quality sampling device for environmental engineering detection comprises:

[0008] The water quality sampling mechanism for detection comprises a storage box;

[0009] The multichannel peristaltic pump is fixed to the inner wall of the cover plate of the storage box at one side;

[0010] The multilayer sampling mechanism is fixed to the inner wall of the cover plate of the storage box, and comprises a second hose;

[0011] The clamping and weighting unit is fixed to one end of the second hose;

[0012] The adjusting mechanism is fixed to the inner wall of the cover plate of the storage box.

[0013] Further, the water quality sampling mechanism for detection comprises:

[0014] The tripod is provided with a group and is fixed to the outer wall of one side of the storage box;

[0015] The arc-shaped holes are provided with a plurality of holes and are arranged at equal intervals on the cover plate of the storage box.

[0016] Preferably, the multi-layer sampling mechanism comprises:

[0017] The fixed seat is fixedly connected with the cover plate of the storage box, and a round rod is fixedly connected with the fixed seat;

[0018] A plurality of ring shells are arranged and fixedly arranged on the outer wall of the round rod at equal intervals, one side of the outer wall of the ring shell is fixedly connected with a circular tube, and the inside of the ring shell is the same as that of the circular tube;

[0019] The first soft tube is fixed to the circular tube.

[0020] Preferably, the multi-layer sampling mechanism comprises:

[0021] The first ring frame is rotatable on the ring shell, the outer wall of the first ring frame is fixedly connected with one end of the second soft tube, and the second soft tube is wound thereon;

[0022] The second ring frame is arranged on both sides of the first ring frame, and the outer wall of one of the second ring frames is provided with a clamping groove;

[0023] The silica gel cross valve is fixed in one end of the second soft tube.

[0024] Preferably, the clamping and weight adding unit comprises:

[0025] The U-shaped frame is fixedly connected with the outer wall of the second soft tube, and the inner walls of the two sides of the U-shaped frame are fixedly connected with magnets;

[0026] The weight block is screwed on the bottom of the U-shaped frame.

[0027] Preferably, the adjusting mechanism comprises:

[0028] The L-shaped frame is fixedly connected with the inner wall of the cover plate of the storage box;

[0029] The square hole is arranged on one end of the L-shaped frame;

[0030] The limiting seat is arranged on both sides of the square hole on the L-shaped frame, and a group of bolts are rotatably connected between the square holes;

[0031] The T-shaped frame is screwed on the bolt, and the outer wall of the T-shaped frame is slidably inserted into the outer wall of the L-shaped frame;

[0032] The square rod is arranged on the outer wall of the L-shaped frame at equal intervals, and the ring frame three is fixedly connected with the square rod;

[0033] The telescopic rod is arranged on the outer wall of one of the second ring frames at equal angles;

[0034] The fourth ring frame is fixed between the four telescopic rods, the fourth ring frame is rotatably connected with the third ring frame, and the outer wall of the fourth ring frame is inserted into the clamping groove.

[0035] Preferably: the adjusting mechanism comprises:

[0036] The rotating seat is fixedly connected with the cover plate of the storage box, a rocker is rotationally connected with the rotating seat, and the rotating shaft of the rocker is fixedly connected with one of the second ring frames.

[0037] Compared with the prior art, the utility model has the advantages that:

[0038] 1. The multi-layer sampling mechanism and the multi-channel peristaltic pump can simultaneously sample water in different depths, the multi-layer sampling mechanism is located above each, and the second soft tube with different lengths is wound, the length is determined according to the working requirement and the sampling depth, the multi-channel peristaltic pump serves as a power source to extrude the first soft tube and drive the second soft tubes to simultaneously collect water samples, the previous mode of obtaining water samples in different depths through multiple operations is changed, time and manpower are saved, the time and space consistency of water sample collection is ensured, and the accuracy and comparability of detection results are improved.

[0039] 2. The silica gel cross valve arranged at one end of the second soft tube has a one-way conduction function, when the second soft tube does not reach the specified position, water in other areas can be prevented from invading, the accuracy of collecting water samples is ensured, when the multi-channel peristaltic pump is started, sufficient negative pressure is generated in the second soft tube, the opening pressure of the silica gel cross valve is reached, the valve is opened, water samples in the target depth enter the second soft tube, non-target water samples are prevented from mixing, the detection result can truly reflect the water quality condition of the water area in the target depth, the clamping and weight unit is fixed at one end of the second soft tube, the weight block is made of high-density metal material, such as a lead block, after the weight block enters water, the second soft tube keeps straight in water, the bending problem of the soft tube caused by storage winding is overcome, the end of the first soft tube cannot reach the correct depth when entering water is prevented, water flow impact is resisted to a certain extent, the soft tube is prevented from deviating, the accuracy of the sampling position is ensured, and reliable detection results are ensured.

[0040] 3. The adjusting mechanism is convenient for adjusting the second soft tube, the rocker is rotationally connected with the rotating seat, one end of the rocker is fixedly connected with one of the second ring frames, when water sample collection is completed, all the second ring frames can be limited together by twisting, and the rocker can drive all the second ring frames to rotate simultaneously, the adjusting of the second soft tube is realized, the operation is simple and efficient, the labor intensity and time of the staff for adjusting the soft tube are reduced, when the second ring frames are adjusted, the magnets in the inner walls of the two sides of the U-shaped frame can attract the second ring frames, the adjusted second soft tube is limited, one of the second soft tubes can be individually limited through the mode when the second soft tube is collected, different lengths of the soft tubes can be adjusted respectively, the adjusting efficiency is improved, and subsequent cleaning and storage are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1Is the overall structure schematic diagram of the utility model;

[0042] Figure 2 Is the ring frame four structure schematic diagram in the utility model;

[0043] Figure 3 Is the partial structure schematic diagram of the multi-layer sampling mechanism in the utility model;

[0044] Figure 4 Is the partial structure schematic diagram of the collection mechanism in the utility model;

[0045] Figure 5 Is the structure schematic diagram of the clamping and weight unit in the utility model;

[0046] Figure 6 Is the structure schematic diagram of the silica gel cross valve in the utility model.

[0047] In the drawing: 100, water quality sampling mechanism for detection; 110, storage box; 111, tripod; 112, arc-shaped hole; 120, multi-channel peristaltic pump; 200, multi-layer sampling mechanism; 210, fixed seat; 211, round rod; 212, ring shell; 213, circular tube; 220, ring frame one; 221, ring frame two; 222, clamping groove; 230, hose one; 240, hose two; 241, silica gel cross valve; 250, clamping and weight unit; 251, U-shaped frame; 252, magnet; 253, weight block; 300, collection mechanism; 311, L-shaped frame; 312, square hole; 313, limiting seat; 314, bolt; 315, T-shaped frame; 316, square rod; 317, ring frame three; 318, telescopic rod; 319, ring frame four; 321, rotating seat; 322, rocker. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0049] Please refer to Figures 1-6The utility model discloses an environmental engineering detects water quality sampling device, its characterized in that, including: the water quality sampling mechanism 100 of detection includes the storage box 110, and the multichannel peristaltic pump 120 is fixed in the cover inner wall of storage box 110 and is located at one side, and multilayer sampling mechanism 200 is fixed on the cover inner wall of storage box 110, and it can cooperate multichannel peristaltic pump 120 and sample the water area of different depth simultaneously, and multilayer sampling mechanism 200 includes hose no. 2 240, and the clamping and heavy unit 250 is fixed to one end of hose no. 2 240, which can make hose no. 2 240 keep straight after submerging, and conveniently collect and adjust hose no. 2 240, and the collection mechanism 300 is fixed on the cover inner wall of storage box 110, which can conveniently collect and adjust hose no. 2 240 by personnel, and the tripod 111 is provided with a group and is fixed on the one side outer wall of storage box 110, which can support the cover of storage box 110, and the arc hole 112 is provided with several and is equidistantly arranged on the cover of storage box 110, which can preliminarily limit hose no. 2 240.

[0050] Multilayer sampling mechanism 200 includes: fixed seat 210 is fixedly connected with the cover of storage box 110, and the fixed seat 210 is fixedly connected with round rod 211, and ring shell 212 is provided with several and is equidistantly fixed on the outer wall of round rod 211, and the outer wall of one side of ring shell 212 is fixedly connected with circular tube 213, and the inside of ring shell 212 and circular tube 213 is communicated, and hose no. 1 230 is fixed to circular tube 213, and ring frame no. 1 220 rotates on ring shell 212, and the outer wall of ring frame no. 1 220 is fixedly connected with one end of hose no. 2 240 and is wound with hose no. 2 240, which can cooperate with the water in hose no. 2 240 and send it into the inside of hose no. 1 230 along the inside of ring shell 212, and conveniently collect and adjust hose no. 2 240, and ring frame no. 2 221 is provided with two and is fixed on both sides of ring frame no. 1 220 respectively, and one of the outer walls of ring frame no. 2 221 is provided with clamping groove 222, and silica gel cross valve 241 is fixed in the inside of one end of hose no. 2 240.

[0051] Clamping and heavy unit 250 includes: U-shaped frame 251 is fixedly connected with the outer wall of hose no. 2 240, and the inner wall of both sides of U-shaped frame 251 is fixedly connected with magnet 252, which can adsorb ring frame no. 2 221, and limit the collected hose no. 2 240, and heavy block 253 is screwed on the bottom of U-shaped frame 251.

[0052] The adjusting mechanism 300 comprises an L-shaped frame 311 fixedly connected with the inner wall of the cover plate of the storage box 110, a square hole 312 is formed on one end of the L-shaped frame 311, two limiting seats 313 are arranged on the L-shaped frame 311 and located on both sides of the square hole 312, a group of square holes 312 are rotatably connected with a bolt 314, a T-shaped frame 315 is screwed on the bolt 314, the outer wall of the T-shaped frame 315 is slidably inserted with the outer wall of the L-shaped frame 311, a plurality of square rods 316 are equidistantly arranged on the outer wall of the L-shaped frame 311, the square rods 316 are fixedly connected with a ring frame three 317, all the ring frames one 220 can be limited together, four telescopic rods 318 are equiangularly arranged on the outer wall of one of the ring frames two 221, a ring frame four 319 is fixed between the four telescopic rods 318, the ring frame four 319 is rotatably connected with the ring frame three 317, and the outer wall of the ring frame four 319 is insertedly matched with the inner part of the clamping groove 222, a rotating seat 321 is fixedly connected with the cover plate of the storage box 110, the rotating seat 321 is rotatably connected with a rocker 322, the rotating shaft of the rocker 322 is fixedly connected with one of the ring frames two 221, the rocker 322 can be rocked, and all the ring frames one 220 are rotated to adjust the hose two 240.

[0053] Specifically, during operation, the storage box 110 is placed on the shore or on the ship, the cover plate is opened, the internal components such as the multi-channel peristaltic pump 120, the multi-layer sampling mechanism 200 and the storage mechanism 300 are exposed, the hose 230 is connected to the pump head of the multi-channel peristaltic pump 120 at one end and is fixedly connected to the circular pipe 213 on the ring shell 212 at the other end, in the multi-layer sampling mechanism 200, the hose 240 is wound on the ring frame 220, one end is fixedly connected to the outer wall of the ring frame 220, the weight unit 250 is clamped and fixed to the other end of the hose 240, the sampling bottle is placed below the port of the hose 230 on the side of the multi-channel peristaltic pump 120, the hose 230 is tightly inserted into the sampling bottle, the weight block 253 is installed at the bottom end of the U-shaped frame 251, and the sampling is prepared. The hose 240 with the installed weight block 253 is placed in the water, the gravity of the weight block 253 causes the ring frame 220 to be affected by the downward movement and to rotate, driving the hose 240 to move downward to the specified depth of the water area, the multi-channel peristaltic pump 120 is started, which generates negative pressure in the hose 230 and the hose 240, when the negative pressure reaches the opening pressure of the silica gel cross valve 241, the silica gel cross valve 241 is opened, and the samples of different depths of the water area are transported into the sampling bottle through the hose 240 and the hose 230, completing the water sample collection. After the water sample collection is completed, the multi-channel peristaltic pump 120 is stopped, the hose 230 is pulled out from the circular pipe 213, the wrench is twisted to twist the bolt 314, driving the T-shaped frame 315 to slide along the square hole 312 to one side, making the ring frame 319 inserted into the clamping groove 222 on the ring frame 221, limiting all the ring frames 220 together, shaking the rocker 322, the rocker 322 drives the ring frame 220 fixedly connected thereto to rotate, thereby driving all the ring frames 220 to rotate synchronously, realizing the storage of the hose 240. When one of the hoses 240 is stored, the weight block 253 is removed and placed back into the storage box 110, the magnets 252 on both sides of the U-shaped frame 251 attract the ring frame 221, limiting the stored hose 240, according to the steps, the storage of all the hoses 240 is completed in turn, finally the stored device is taken back, and the components are cleaned for the next sampling.

[0054] Example 1

[0055] As Figures 1-4As shown, in this embodiment, the multi-layer sampling mechanism 200 comprises: the fixed seat 210 is fixedly connected with the cover plate of the storage box 110, and the fixed seat 210 is fixedly connected with a round rod 211; a plurality of ring shells 212 are fixedly arranged on the outer wall of the round rod 211 at equal intervals; a round pipe 213 is fixedly connected with the outer wall of one side of the ring shell 212, and the ring shell 212 and the round pipe 213 are in communication; a first soft pipe 230 is fixedly arranged on the round pipe 213; a ring frame 220 rotates on the ring shell 212; the outer wall of the ring frame 220 is fixedly connected with one end of a second soft pipe 240 and is wound with the second soft pipe 240, so that the water in the second soft pipe 240 can be sent into the first soft pipe 230 along the inside of the ring shell 212, and the second soft pipe 240 can be conveniently arranged; two ring frames 221 are fixedly arranged on the two sides of the ring frame 220, respectively; and a clamping groove 222 is formed in the outer wall of one of the ring frames 221.

[0056] In this embodiment, through cooperation of the multi-layer sampling mechanism 200 and the multi-channel peristaltic pump 120, water samples at different depths can be simultaneously taken; the second soft pipes 240 of different lengths are wound on each ring frame 220 in the multi-layer sampling mechanism 200, and the lengths of the second soft pipes 240 are determined according to working requirements and sampling depths; the multi-channel peristaltic pump 120 serves as a power source to extrude the first soft pipe 230 and drive the second soft pipes 240 to simultaneously collect water samples, thereby changing the previous mode of obtaining water samples at different depths through multiple operations, saving time and labor, ensuring time and space consistency of water sample collection, and improving accuracy and comparability of detection results.

[0057] As shown in the drawings, Figures 5-6 In this embodiment, the multi-layer sampling mechanism 200 further comprises: a silica gel cross valve 241 is fixedly arranged in one end of the second soft pipe 240; and the clamping weight unit 250 comprises: a U-shaped frame 251 is fixedly connected with the outer wall of the second soft pipe 240; the inner walls of the two sides of the U-shaped frame 251 are fixedly connected with magnets 252, respectively, so that the ring frame 221 can be adsorbed, the arranged second soft pipe 240 is limited, and a weight 253 is screwed on the bottom of the U-shaped frame 251.

[0058] In the embodiment, the silicone cross valve 241 is arranged at one end of the second hose 240, and has a one-way conduction function. When the second hose 240 does not reach the designated position, the silicone cross valve 241 can prevent water from other areas from invading, thereby ensuring the accuracy of the collected water sample. When the multi-channel peristaltic pump 120 is started, sufficient negative pressure is generated in the second hose 240, and when the opening pressure of the silicone cross valve 241 is reached, the valve is opened, so that the water sample at the target depth enters the hose, and non-target water samples are prevented from mixing, so that the detection result can truly reflect the water quality condition of the water area at the target depth. The weight unit 250 is fixed at one end of the second hose 240 by clamping. The weight block 253 is made of high-density metal material, such as a lead block. When the weight block 253 enters the water, the second hose 240 remains straight in the water, overcoming the bending problem of the hose caused by storage and winding. The first hose 230 cannot reach the correct depth when it is lowered into the water, and to some extent, the weight unit 250 resists the impact of the water flow, avoids the deviation of the hose, ensures the accuracy of the sampling position, and provides a guarantee for reliable detection results.

[0059] Embodiment Two

[0060] As shown in Figure 1 , Figure 2 and Figure 4 , in the embodiment, the collecting mechanism 300 includes an L-shaped frame 311 fixedly connected to the inner wall of the cover plate of the storage box 110, a square hole 312 arranged at one end of the L-shaped frame 311, two limit seats 313 fixedly arranged on the L-shaped frame 311 at both sides of the square hole 312, a bolt 314 rotatably connected between a group of square holes 312, a T-shaped frame 315 screwed on the bolt 314, the outer wall of the T-shaped frame 315 slidingly inserted into the outer wall of the L-shaped frame 311, a plurality of square rods 316 fixedly arranged on the outer wall of the L-shaped frame 311 at equal intervals, the square rods 316 fixedly connected with a ring frame three 317, capable of limiting all the ring frames one 220 together, four extension rods 318 fixedly arranged on the outer wall of one of the ring frames two 221 at equal angles, a ring frame four 319 fixedly arranged between the four extension rods 318, the ring frame four 319 rotatably connected with the ring frame three 317, and the outer wall of the ring frame four 319 inserted into the inner part of the clamping groove 222, a rotating seat 321 fixedly connected with the cover plate of the storage box 110, the rotating seat 321 rotatably connected with a rocker 322, the rotating shaft of the rocker 322 fixedly connected with one of the ring frames two 221, capable of rocking the rocker 322 and simultaneously driving all the ring frames one 220 to rotate to collect the second hose 240.

[0061] In specific implementation, the hose 240 is conveniently adjusted by the adjusting mechanism 300, the rocker 322 is rotationally connected with the rotating seat 321, the rotating shaft of the rocker 322 is fixedly connected with one of the ring frames 221, when the water sample collection is completed, the ring frames 221 are limited together by twisting the bolt 314, the rocker 322 is shaken to drive the rotation of all the ring frames 221, the hose 240 is adjusted, the operation is simple and efficient, the labor intensity and time of the staff for adjusting the hose are reduced, when the hose 240 is adjusted, the magnets 252 on the inner walls of the two sides of the U-shaped frame 251 can attract the ring frames 221 to limit the adjusted hose 240, when one of the hoses 240 is collected, the hose can be individually limited by this way, the hoses of different lengths are conveniently adjusted, the adjusting efficiency is improved, and the subsequent cleaning and storage are facilitated.

[0062] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0063] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A water quality sampling device for environmental engineering detection, characterized by, The utility model relates to a water quality sampling mechanism for detection, which comprises a storage box (110), a multichannel peristaltic pump (120) fixed to the inner wall of the cover plate of the storage box (110) at one side, a multilayer sampling mechanism (200) fixed to the inner wall of the cover plate of the storage box (110), the multilayer sampling mechanism (200) comprising a hose II (240), a clamping and weight unit (250) fixed to one end of the hose II (240), and a collection mechanism (300) fixed to the inner wall of the cover plate of the storage box (110). The water quality sampling mechanism for detection (100) comprises a tripod (111) arranged in a group and fixed to the outer wall of one side of the storage box (110), and arc-shaped holes (112) arranged in a plurality of numbers and equidistantly formed on the cover plate of the storage box (110). The multilayer sampling mechanism (200) comprises a fixing seat (210) fixedly connected with the cover plate of the storage box (110), the fixing seat (210) being fixedly connected with a round rod (211), a plurality of ring shells (212) equidistantly fixed to the outer wall of the round rod (211), each ring shell (212) being fixedly connected with a circular tube (213) on one side of the outer wall, and the ring shell (212) and the circular tube (213) being the same in the interior, and a hose I (230) fixed to the circular tube (213). The multilayer sampling mechanism (200) comprises a ring holder I (220) rotatable on the ring shell (212), the outer wall of the ring holder I (220) being fixedly connected with one end of the hose II (240) and being wound with the hose II (240), two ring holders II (221) arranged on both sides of the ring holder I (220), one of the ring holders II (221) being provided with a clamping groove (222) on the outer wall, and a silica gel cross valve (241) fixed in the interior of one end of the hose II (240). The clamping and weight unit (250) comprises a U-shaped holder (251) fixedly connected with the outer wall of the hose II (240), two magnets (252) fixedly connected with the inner walls of both sides of the U-shaped holder (251), and a weight block (253) screwed on the bottom of the U-shaped holder (251). The collection mechanism (300) comprises an L-shaped holder (311) fixedly connected with the inner wall of the cover plate of the storage box (110), a square hole (312) formed on one end of the L-shaped holder (311), two limiting seats (313) fixed on both sides of the square hole (312) on the L-shaped holder (311), a bolt (314) rotatably connected between the two square holes (312), a T-shaped holder (315) screwed on the bolt (314), the outer wall of the T-shaped holder (315) being slidably inserted into the outer wall of the L-shaped holder (311), a plurality of square rods (316) equidistantly fixed to the outer wall of the L-shaped holder (311), the square rods (316) being fixedly connected with ring holders III (317), four telescopic rods (318) equiangularly fixed to the outer wall of one of the ring holders II (221), a ring holder IV (319) fixed between the four telescopic rods (318), the ring holder IV (319) being rotatably connected with the ring holder III (317), and the outer wall of the ring holder IV (319) being inserted into the interior of the clamping groove (222).

2. The water quality sampling device for environmental engineering detection according to claim 1, characterized in that, ​ ​ ​ 3. The water quality sampling device for environmental engineering detection according to claim 1, characterized in that, ​ ​ ​ ​ 4. The water quality sampling device for environmental engineering detection according to claim 3, characterized in that, ​ ​ ​ ​ 5. The water quality sampling device for environmental engineering detection according to claim 1, characterized in that, ​ ​ ​ 6. The water sampling device for environmental engineering detection according to any one of claims 1-5, characterized in that, ​ ​ ​ ​ ​ ​ ​ ​ 7. The water quality sampling device for environmental engineering detection according to claim 6, characterized in that, The adjusting mechanism (300) comprises: The rotating seat (321) is fixedly connected with the cover plate of the storage box (110), and the rotating seat (321) is rotationally connected with the rocker (322), and the rotating shaft of the rocker (322) is fixedly connected with one of the two ring frames (221).

Images