Portable water quality sampling device for environment detection

Abstract

The invention discloses a portable water quality sampling device for environment detection. The portable water quality sampling device comprises a floating plate, the upper end of the floating plate is provided with a winding device, the winding device is provided with a lifting rope, the lower end of the lifting rope is connected with a gravity box, the upper part of the gravity box is provided with a motor, and the lower end of the motor is connected with a lifting frame; the lower pipe wall of the annular pipe is connected with a water inlet pipe, the middle pipe wall of the annular pipe is connected with a one-way plunger nozzle, the upper pipe wall of the annular pipe is connected with a pressure control pump, and a sampling assembly is arranged in the annular pipe; the driving assembly is arranged on the hanging bracket and is used for regulating and controlling the sampling assembly to move; the sampling tube is embedded into the hanging bracket and is used for receiving the solution led out of the one-way plunger nozzle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality sampling, in particular to a portable water quality sampling device for environmental detection. BACKGROUND

[0002] Water quality sampling is the core link of environmental protection, water resource management and ecological research. The traditional water quality sampling device has the following problems: the water sample is collected by a single sampling pipe, and different levels of water samples are obtained by adjusting the depth multiple times, which is low in operation efficiency and easy to affect the authenticity of the sample due to equipment disturbance; the residues on the pipe wall after sampling are easy to mix into the subsequent sample; especially when multiple layers are sampled, the chemical or biological components of different depths interfere with each other, resulting in distorted detection results; the filter structure of the inlet depends on manual cleaning, and the filter hole is frequently blocked during field operation, which seriously affects the smoothness of sampling.

[0003] Therefore, it is necessary to provide a portable water quality sampling device for environmental detection to solve the problems in the background art. SUMMARY

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a portable water quality sampling device for environmental detection, comprising:

[0005] A floating plate is provided with a winding device at the upper end, a lifting rope is installed on the winding device, a gravity box is connected to the lower end of the lifting rope, a motor is arranged on the upper part of the gravity box, and a lifting frame is connected to the lower end of the motor;

[0006] A ring pipe is arranged around the lifting frame, a water inlet pipe is connected to the lower pipe wall of the ring pipe, a one-way plunger nozzle is connected to the middle pipe wall, a pressure control pump is connected to the upper pipe wall, and a sampling assembly is arranged in the pipe;

[0007] A driving assembly is arranged on the lifting frame for controlling the movement of the sampling assembly;

[0008] A sampling pipe is embedded in the lifting frame for receiving the solution guided by the one-way plunger nozzle.

[0009] Preferably, the sampling pipe comprises a sealing end and a sampling chamber which are integrated, and the upper part of the sampling chamber is provided with a liquid inlet;

[0010] The lifting frame is provided with a ring opening matched with the movement of the one-way plunger nozzle.

[0011] Preferably, a filter head is sleeved on the lower end of the water inlet pipe.

[0012] Preferably, a water guide disc one is fixed at the lower end of the water inlet pipe cavity, a water guide hole one is arranged at the center of the water guide disc one, a water guide disc two is matched with the upper end of the water guide disc one, a water guide hole two is arranged on the water guide disc two in a staggered manner with the water guide hole one, and the upper end of the water inlet pipe cavity is connected with the water guide disc two through a spring two.

[0013] Preferably, the inlet pipe lower end rotates with a scraping strip sleeved outside the filter head;

[0014] The water guide disc is provided with an axle rod penetrating the water guide hole and the filter head, and the axle rod is provided with a fan blade below the water guide hole, and the scraping strip is axially slidably connected with the outer wall of the axle rod.

[0015] Preferably, the driving assembly comprises:

[0016] The guide wheel is rotatably arranged on the hanger and is distributed at the corners on the inner side of the ring pipe.

[0017] The guide wire is sleeved outside the guide wheel and is provided with a magnetic block mounted thereon.

[0018] The driving shaft is mounted on the hanger and is connected with one guide wheel through a belt.

[0019] Preferably, the sampling assembly comprises:

[0020] The outer wall of the ring block is provided with a friction sleeve one and a cleaning sleeve one, respectively, and the tail end of the ring block is connected with a sealing column one through a spring one, and the outer wall of the sealing column one is provided with a sealing capsule sleeve one.

[0021] The outer wall of the sealing column two is provided with a sealing capsule sleeve two and a magnetic ring, and the magnetic ring is used for cooperating with the driven assembly.

[0022] Preferably, the tail end of the sealing column one is provided with a screw rod, and the tail end of the screw rod is rotatably provided with a tail block located at the tail end of the sealing column two, and the outer wall of the tail block is provided with a cleaning sleeve two.

[0023] The center of the sealing column two is penetrated by a T-shaped disc rotatably mounted, the T-shaped disc is provided with a threaded hole matched with the screw rod, the head end disc surface of the T-shaped disc is provided with an arc groove, the arc groove is embedded with a cleaning strip capsule, and the threaded hole at the head end of the T-shaped disc is provided with a cleaning cotton ring.

[0024] Preferably, the ring block and the sealing column one are connected through an elastic sleeve one, and the sealing column two and the tail block are connected through an elastic sleeve two.

[0025] Preferably, the tail end of the sealing column one is provided with an air capsule disc, the head end surface of the air capsule disc is fixed with the sealing column one, and the tail end center port of the air capsule disc is sleeved on the head end of the screw rod through a slip ring sleeve sealing sliding.

[0026] Compared with the prior art, the present application provides a portable water quality sampling device for environmental detection, which has the following beneficial effects:

[0027] In the present application, the hanger is driven to rotate by the motor, and cooperates with the plurality of independent sampling tubes in the circumferential array, so that the directional collection of water bodies at different depths can be completed at one time, the one-way plunger nozzle is accurately positioned with the sampling tube liquid inlet, so as to ensure that the sample is accurately introduced into the corresponding warehouse body, avoid the low-efficiency operation of the traditional device which needs to be lowered multiple times, and perform multi-layer synchronous sampling, thereby improving the efficiency.

[0028] In the application, the rotation of the fan blades driven by the water flow during sampling drives the synchronous rotation of the scraping strips, realizes real-time dredging of the filter holes of the filter head, prevents impurities from blocking, improves the water inlet efficiency, realizes self-driven cleaning of the filter head, and when the sampling assembly moves, the cleaning sleeve one and the cleaning sleeve two rub against the inner wall of the ring pipe to remove residues. Combined with the sealing effect of the sealing capsule, cross contamination of different depth samples is completely avoided, and the purity of the samples is ensured.

[0029] In the application, under the non-sampling state, the water guide disc one and the water guide disc two are automatically closed to block the water from entering the pipeline. During sampling, the water guide disc one and the water guide disc two are opened by negative pressure to form a dynamic seal to prevent non-target layer water from mixing. During sample discharge, the air bag disc contacts the outwardly diffused pressure to cooperate with the cleaning strip capsule and the cotton ring to completely discharge the residual sample, ensuring the independence of each sampling. The gravity tank integrates the winding device, the driving assembly and the sampling system, the floating plate provides water surface support, the overall structure is lightweight, can be quickly deployed to complex environments such as lakes and rivers, meets the needs of emergency detection and long-term monitoring, is portable and compact, is suitable for field operation, switches sampling and sample discharge by controlling the pressure of the ring pipe through the pressure control pump, remotely controls the movement of the sampling assembly through the magnetic drive assembly, reduces manual intervention, reduces the operation difficulty, improves the safety and reliability of field operation, and realizes full-automatic control and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the portable water quality sampling device of the application.

[0031] Figure 2 It is a structural schematic diagram of the one-way plunger nozzle of the application.

[0032] Figure 3 It is a structural schematic diagram of the ring mouth of the application.

[0033] Figure 4 It is a structural schematic diagram of the driving assembly of the application.

[0034] Figure 5 It is a structural schematic diagram of the sampling pipe of the application.

[0035] Figure 6 It is a structural schematic diagram of the pressure control pump of the application.

[0036] Figure 7 It is a partial structural schematic diagram. Figure 6

[0037] Figure 8 It is a structural schematic diagram of the sampling assembly of the application.

[0038] Figure 9 It is a structural schematic diagram of the cleaning strip capsule of the application.

[0039] Figure 10 ​The schematic diagram of the air bag disc structure of the present application;

[0040] In the figure: 1, floating plate; 2, winding device; 3, lifting rope; 4, gravity tank; 5, ring pipe; 6, sampling assembly; 7, sampling pipe; 8, driving assembly; 9, water inlet pipe; 41, motor; 42, lifting frame; 43, ring opening; 51, one-way plunger nozzle; 52, pressure control pump; 61, ring block; 62, sealing column I; 63, spring I; 64, elastic sleeve I; 65, sealing column II; 66, tail block; 67, elastic sleeve II; 611, friction sleeve I; 612, cleaning sleeve I; 621, sealing bag sleeve I; 622, air bag disc; 623, slip ring sleeve; 624, screw; 651, sealing bag sleeve II; 652, magnetic ring; 653, T-shaped disc; 654, threaded hole; 655, cleaning cotton ring; 656, arc groove; 657, cleaning strip bag; 661, cleaning sleeve II; 71, sealing end; 72, sampling bin; 73, liquid inlet; 81, guide wheel; 82, guide wire; 83, magnetic attraction block; 84, driving shaft; 85, belt; 91, filter head; 92, water guide disc I; 93, water inlet I; 94, water guide disc II; 95, water inlet II; 96, spring II; 97, shaft rod; 98, fan leaf; 99, scraping strip. DETAILED DESCRIPTION

[0041] REFERENCE Figures 1 to 10 The present application provides a technical solution: a portable water quality sampling device for environmental detection, comprising:

[0042] The floating plate 1 is provided with a winding device 2 at the upper end, the winding device 2 is installed with a lifting rope 3, the lower end of the lifting rope 3 is connected with a gravity tank 4, and the upper part of the gravity tank 4 is provided with a motor 41, and the lower end of the motor 41 is connected with a lifting frame 42;

[0043] The ring pipe 5 is arranged outside the lifting frame 42, the lower pipe wall is connected with a water inlet pipe 9, the middle pipe wall is connected with a one-way plunger nozzle 51, the upper pipe wall is connected with a pressure control pump 52, and the pipe is provided with a sampling assembly 6;

[0044] The driving assembly 8 is arranged on the lifting frame 42 and is used for controlling the movement of the sampling assembly 6;

[0045] The sampling pipe 7 is embedded in the lifting frame 42 and is used for receiving the solution guided out by the one-way plunger nozzle 51;

[0046] Among them, through the winding device 2, the length of the lifting rope 3 is retracted, through the gravity tank 4, the gravity tank 4 sinks in the water body under the action of gravity, so as to reach different water quality depths, collect water solution samples of various depth water quality, and perform water quality sampling;

[0047] The sampling pipe 7 is arranged in a plurality of circumferential close positions, the motor 41 controls the rotation of the hanger 42, so that the one-way plunger nozzle 51 can correspond to different positions of the sampling pipe 7, thereby facilitating the collection of a large amount of water quality solution samples. In addition, the outer wall of the water inlet pipe 9 is rotationally connected with the gravity tank 4, and the hanger 42 is integrally arranged in the gravity tank 4, so that the water solution only contacts the outer surface of the gravity tank 4, thereby improving the cleaning efficiency and convenience.

[0048] In the embodiment, the sampling pipe 7 includes an integrated sealing end 71 and a sampling chamber 72, the sampling chamber 72 is provided with a liquid inlet 73 at the upper portion, and the sealing end 71 is provided with a convex column at the upper end, so that the sampling pipe 7 can be directly inserted into and taken out of the gravity tank 4, and the liquid inlet 73 is at the same level as the one-way plunger nozzle 51, so that the solution sprayed by the one-way plunger nozzle 51 can be directly guided to the liquid inlet 73 and into the sampling chamber 72.

[0049] The hanger 42 is provided with a ring opening 43 matched with the movement of the one-way plunger nozzle 51, that is, in the embodiment, the one-way plunger nozzle 51 protrudes from the outer wall of the ring pipe 5, so that it can spray the solution into the liquid inlet 73, and when the motor 41 controls the hanger 42 to drive the ring pipe 5 to rotate, the one-way plunger nozzle 51 can correspond to different sampling pipes 7.

[0050] In the embodiment, the lower end of the water inlet pipe 9 is sleeved with a filter head 91, so as to prevent substances interfering with the detection in the water quality water body from entering the water inlet pipe 9, thereby improving the safety, smoothness and accuracy of sampling.

[0051] In the embodiment, the lower end of the water inlet pipe 9 is sleeved with a filter head 91, so as to prevent substances interfering with the detection in the water quality water body from entering the water inlet pipe 9, thereby improving the safety, smoothness and accuracy of sampling.

[0052] Specifically, when the water quality solution is not sampled, the water guide disc two 94 is tightly attached to the water guide disc one 92 under the action of the spring two 96, so that the water guide opening one 93 and the water guide opening two 95 are blocked with each other to form a sealed structure. When negative pressure is generated in the water inlet pipe 9, the water guide disc two 94 is driven to move upward, so that the water guide opening one 93 and the water guide opening two 95 are communicated with each other to form a conductive structure. Therefore, the solution in the water quality can be filtered through the filter head 91, and then sequentially pass through the water guide opening one 93, the water guide opening two 95 and the water inlet pipe 9, so that when the sampling is not performed, the water solution is prevented from entering the sampling assembly 6.

[0053] In the embodiment, the lower end of the water inlet pipe 9 is rotatably sleeved with a scraping strip 99 outside the filter head 91; the scraping strip 99 is in contact with the outer wall of the filter head 91, and when the scraping strip 99 rotates, the filter holes of the filter head 91 can be cleaned in time, the filter holes of the filter head 91 are dredged, the water permeability of the filter head 91 is improved, and thus the solution collection efficiency is improved;

[0054] The central part of the water guide disc two 94 is rotatably provided with a shaft 97 penetrating through the water guide hole one 93 and the filter head 91; the shaft 97 is provided with a fan blade 98 below the water guide hole one 93, and the scraping strip 99 is axially slidably connected to the outer wall of the shaft 97; when the fan blade 98 moves on the shaft 97, the fan blade 98 can gradually enter the water guide hole one 93;

[0055] That is, when negative pressure is generated in the water inlet pipe 9, the water guide disc two 94 is driven to move upwards, the solution flowing in the water guide hole one 93 can impact the fan blade 98, thereby driving the fan blade 98 and the shaft 97 to rotate, and the shaft 97 can drive the scraping strip 99 to rotate, thereby self-cleaning the filter head 91 and improving the convenience and efficiency of cleaning the filter head 91; the solution in the water guide hole one 93 can better impact the fan blade 98 and drive the fan blade 98 to rotate.

[0056] In the embodiment, the driving assembly 8 comprises:

[0057] The guide wheels 81 are rotatably arranged on the hanger 42 and are distributed at the corners on the inner side of the ring pipe 5;

[0058] The guide wire 82 is sleeved outside the guide wheel 81, and the magnetic block 83 is mounted on the guide wire 82;

[0059] The driving shaft 84 is mounted on the hanger 42 and is connected to one of the guide wheels 81 through the belt 85;

[0060] Specifically, the driving shaft 84 controls the belt 85 to drive one of the guide wheels 81 to rotate, thereby driving all the guide wheels 81 to rotate, driving the guide wire 82 to move and driving the magnetic block 83 to move; the magnetic block 83 and the magnetic ring 652 in the sampling assembly 6 are attracted to each other, so that when the magnetic block 83 moves, the magnetic ring 652 moves, thereby driving the sampling assembly 6 to move to correspond to the one-way plunger nozzle 51 and to correspond to the water inlet pipe 9.

[0061] In the embodiment, the sampling assembly 6 comprises:

[0062] The outer wall of the ring block 61 is respectively provided with a friction sleeve one 611 and a cleaning sleeve one 612, the tail end of the ring block 61 is connected with a sealing column one 62 through a spring one 63, and the outer wall of the sealing column one 62 is provided with a sealing capsule sleeve one 621;

[0063] The cleaning sleeve 612 is used for cleaning the inner wall of the ring pipe 5, and can ensure that the sampling assembly 6 can be cleaned in real time during movement, so as to avoid cross contact of the solution in the sampling assembly 6 each time, and ensure the purity of sampling of the sampling assembly 6 each time.

[0064] The sealing bag sleeve 621 is used for tightly contacting the inner wall of the ring pipe 5 to form a sealing effect.

[0065] The friction sleeve 611 is used for generating static friction effect with the inner wall of the ring pipe 5, that is, when sampling, under the action of the friction sleeve 611, the ring block 61 can be static on the wall of the ring pipe 5 when the control pressure pump 52 controls the lumen of the ring pipe 5 to generate negative pressure, and the negative pressure drives the sealing column 61 to move, so that the solution outside the water inlet pipe 9 enters the water inlet pipe 9, and then the water quality solution enters the chamber between the sealing column 61 and the sealing column 65.

[0066] The sealing column 65 is provided with a sealing bag sleeve 651 and a magnetic ring 652 on the outer wall, and the magnetic ring 652 is used for cooperating with the driven assembly 8.

[0067] The sealing bag sleeve 651 is used for tightly contacting the inner wall of the ring pipe 5 to form a sealing effect.

[0068] The magnetic ring 652 is used for cooperating with the magnetic attraction block 83 in the driven assembly 8 to generate an attractive force, so that the driven assembly 8 controls the movement of the magnetic ring 652.

[0069] Specifically, after the sampling assembly 6 completes sampling, the magnetic attraction block 83 is driven to move by the driven assembly 8, so as to drive the magnetic ring 652 and the sealing column 65 to move, thereby driving the sampling assembly 6 and the sample solution to move together.

[0070] In the embodiment, the screw rod 624 is installed at the tail end of the sealing column 62, and the tail block 66 located at the tail of the sealing column 65 is rotatably arranged at the tail end of the screw rod 624, and the outer wall of the tail block 66 is provided with a cleaning sleeve 661.

[0071] The cleaning sleeve 661 is used for cleaning the inner wall of the ring pipe 5, and can ensure that the sampling assembly 6 can be cleaned in real time during movement, so as to avoid cross contact of the solution in the sampling assembly 6 each time, and improve the real-time maintenance of the sample solution during movement in the ring pipe 5, so that the solution is consistent with the initial solution before movement.

[0072] The T-shaped disc 653 is rotatably installed and penetrates the center of the sealing column 65, the T-shaped disc 653 is provided with a threaded hole 654 matched with the screw rod 624, the head end disc surface of the T-shaped disc 653 is provided with an arc groove 656, the arc groove 656 is embedded with a cleaning strip bag 657, and the threaded hole 654 at the head end of the T-shaped disc 653 is provided with a cleaning cotton ring 655.

[0073] Wherein, the screw 624 and the T-shaped disc 653 are arranged to ensure the sufficiency of the sample solution introduction to the one-way plunger nozzle 51, and avoid the sample solution remaining in the sampling assembly 6. Specifically, when the sampling assembly 6 moves to correspond to the one-way plunger nozzle 51, at this time, the pressure in the lumen of the ring tube 5 is increased by the pressure control pump 52, so as to push the sealing column I 62 to extrude the sample solution under the action of the spring I 63. The sealing column I 62 can drive the T-shaped disc 653 to rotate in the moving process, and the trapezoidal disc 653 can drive the cleaning strip capsule 657 to rotate. When the tail end of the sealing column I 62 contacts the cleaning strip capsule 657, the friction cleaning effect between the tail end surface of the sealing column I 62 and the cleaning strip capsule 657 is generated, so as to avoid the adhesion of residual materials on the surfaces of the two, thereby improving the cleanliness of the surfaces of the two, and ensuring the purity of each water quality sample.

[0074] Wherein, when the tail end surface of the sealing column I 62 does not contact the cleaning strip capsule 657, the cleaning strip capsule 657 can protrude from the arc groove 656, so as to clean the tail end surface of the sealing column I 62. When the tail end surface of the sealing column I 62 contacts the cleaning strip capsule 657, the cleaning strip capsule 657 can completely embed in the arc groove 656 under the pressure of the sealing column I 62, so as to facilitate the full discharge of the sample solution.

[0075] Wherein, the cleaning cotton ring 655 is arranged to clean the surface of the screw 624.

[0076] In the embodiment, the ring block 61 and the sealing column I 62 are connected through the elastic sleeve I 64, and the sealing column II 65 and the tail block 66 are connected through the elastic sleeve II 67.

[0077] Wherein, the elastic sleeve I 64 is arranged to improve the stability of the movement cooperation between the ring block 61 and the sealing column I 62.

[0078] Wherein, the elastic sleeve I 64 is arranged to improve the stability of the movement cooperation between the sealing column II 65 and the tail block 66.

[0079] In the embodiment, the tail end of the sealing column I 62 is provided with an air bag disc 622, the head end surface of the air bag disc 622 is fixed with the sealing column I 62, and the tail end center hole of the air bag disc 622 is sealed and slidably sleeved on the head end portion of the screw 624 through the slip ring sleeve 623.

[0080] Wherein, when the tail end surface of the air bag disc 622 is not in contact with the T-shaped disc 653 on the sealing column two 65, it is in a convex state, and the surface of the screw rod 624 can be sealed and slid by the sliding ring sleeve 623, and the surface of the screw rod 624 in this area is smooth. Specifically, when the tail end surface of the air bag disc 622 is in contact with the head end surface of the T-shaped disc 653, the tail end surface of the air bag disc 622 at the sliding ring sleeve 623 first contacts the T-shaped disc 653, and then, as the air bag disc 622 gradually contacts the head end surface of the T-shaped disc 653 in a way of outward diffusion, thereby facilitating the full discharge of the sample solution.

[0081] In a specific implementation, it includes the following steps:

[0082] S1: regulating the floating plate 1 to be positioned at the surface position of the water quality water body to be detected;

[0083] S2: regulating the hanging rope 3 to the depth position of the water quality water body where the sample solution is to be collected by the winding device 2;

[0084] S3: regulating the annular tube 5 to generate negative pressure by the pressure control pump 52, so that the water solution outside the water inlet pipe 9 enters the sampling assembly 6;

[0085] S4: regulating the magnetic block 83 to move by the driving assembly 8, driving the magnetic ring 652 in the sampling assembly 6 to move, so that the sampling assembly 6 moves to correspond to the one-way plunger nozzle 51, that is, the T-shaped disc 653 in the sealing capsule two 651 in the sampling assembly 6 is aligned with the one-way plunger nozzle 51;

[0086] S5: regulating the pressure of the annular tube 5 by the pressure control pump 52, so that the sampling assembly 6 extrudes the sample solution in it into the one-way plunger nozzle 51, and enters the sampling bin 72 through the liquid inlet 73;

[0087] S6: regulating the hanger 42 to rotate by the motor 41, so that the one-way plunger nozzle 51 is aligned with the liquid inlet 73 of the sampling pipe 7 which does not contain the sample solution, and the magnetic block 83 is regulated to move by the driving assembly 8, so that the sampling assembly 6 moves to correspond to the water inlet pipe 9, so as to collect the water quality solution next time, so that the water quality solution can be collected and detected conveniently, continuously and accurately.

[0088] The above is only a preferred specific implementation of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the application according to the technical solution and the inventive concept of the application, which should be covered within the protection scope of the application.

Claims

1. A portable water quality sampling device for environmental testing, characterized in that: include: A floating plate (1) is provided with a winding device (2) at its upper end, a lifting rope (3) is installed on the winding device (2), the lower end of the lifting rope (3) is connected to a gravity box (4), a motor (41) is provided on the upper part of the gravity box (4), and the lower end of the motor (41) is connected to a hanger (42); A ring tube (5) is arranged on the periphery of the hanger (42), the lower tube wall of which is connected to the water inlet pipe (9), the middle tube wall of which is connected to the one-way plunger nozzle (51), the upper tube wall of which is connected to the pressure control pump (52), and the sampling assembly (6) is provided in the tube; A driving assembly (8), disposed on the hanger (42), for regulating the movement of the sampling assembly (6); The sampling tube (7) is embedded in the hanger (42) and is used to receive the solution derived from the one-way plunger nozzle (51).

2. A portable water quality sampling device for environmental detection according to claim 1, characterized in that: The sampling tube (7) comprises a sealed end (71) and a sampling chamber (72) which are integrally formed at the top and bottom. The upper portion of the sampling chamber (72) is provided with a liquid inlet (73). The hanger (42) is provided with a ring opening (43) that cooperates with the one-way plunger nozzle (51) for movement.

3. A portable water quality sampling device for environmental detection according to claim 1, characterized in that: The lower end of the water inlet pipe (9) is covered with a filter head (91).

4. A portable water quality sampling device for environmental detection according to claim 3, characterized in that: A water guide plate 1 (92) is fixed to the lower end of the water inlet pipe (9) tube cavity, a water guide port 1 (93) is provided in the center of the water guide plate 1 (92), a water guide plate 2 (94) is matched with the upper end of the water guide plate 1 (92), a water guide port 2 (95) is provided on the water guide plate 2 (94) and is offset from the water guide port 1 (93), and the upper end of the water inlet pipe (9) tube cavity is connected to the water guide plate 2 (94) via a spring 2 (96).

5. A portable water quality sampling device for environmental detection according to claim 4, characterized in that: The lower end of the water inlet pipe (9) is provided with a scraper (99) which is rotatably sleeved on the outside of the filter head (91); The water guide plate 2 (94) is centrally rotated with a shaft (97) that penetrates the water guide port 1 (93) and the filter head (91); the shaft (97) is provided with a fan blade (98) below the water guide port 1 (93); and a scraper (99) is axially slidably connected to the outer wall of the shaft (97).

6. A portable water quality sampling device for environmental detection according to claim 1, characterized in that: The driving assembly (8) comprises: Guide wheels (81) rotate on the hanger (42) and are distributed at the corners inside the ring tube (5); A wire (82) is sleeved on the outside of the guide wheel (81) and a magnetic block (83) is mounted on the guide wheel; A drive shaft (84) is mounted on the hanger (42) and is connected to a guide wheel (81) via a belt (85).

7. A portable water quality sampling device for environmental detection according to claim 1, characterized in that: The sampling assembly (6) comprises: The ring block (61) has a friction sleeve (611) and a cleaning sleeve (612) on its outer wall, and its tail end is connected to a sealing column (62) via a spring (63). The outer wall of the sealing column (62) is provided with a sealing bag (621); The outer wall of the sealing column 2 (65) is provided with a sealing bag 2 (651) and a magnetic ring (652), and the magnetic ring (652) is used to cooperate with the driven component (8).

8. The portable water quality sampling device for environmental detection according to claim 7, characterized in that: A screw (624) is installed at the center of the tail end of the sealing column (62), and a tail block (66) located at the tail end of the sealing column (65) is rotated at the tail end of the screw (624), and a cleaning sleeve (661) is provided on the outer wall of the tail block (66); The center of the second sealing column (65) is penetrated by a T-shaped disc (653) which is rotatably mounted. The T-shaped disc (653) is provided with a threaded hole (654) which cooperates with the screw (624). The head end of the T-shaped disc (653) is provided with an arc groove (656). A cleaning strip (657) is embedded in the arc groove (656). A cleaning sponge ring (655) is provided at the threaded hole (654) at the head end of the T-shaped disc (653).

9. A portable water quality sampling device for environmental detection according to claim 8, characterized in that: The ring block (61) is connected to the sealing column (62) through the elastic sleeve (64), and the sealing column (65) is connected to the tail block (66) through the elastic sleeve (67).

10. The portable water quality sampling device for environmental detection according to claim 8, characterized in that: The tail end of the sealing column (62) is provided with an airbag disc (622), the head end surface of the airbag disc (622) is fixed to the sealing column (62), and the center opening of the tail end of the airbag disc (622) is sealed and slidably sleeved on the head end of the screw (624) through a slip ring sleeve (623).

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