Water quality sampling device

Abstract

The utility model discloses a water quality sampling device which comprises a sampling head, a sample guiding pipe is arranged at the upper end of the sampling head, a collecting tank is arranged beside the sample guiding pipe, the sampling head is matched with the collecting tank through the sample guiding pipe, a supporting frame is arranged above the sampling head, a limiting rod is arranged in the supporting frame, a threaded connector is arranged at the lower end of the limiting rod, and the threaded connector is connected with the sampling head. Internal thread rings are arranged at the upper ends of the sampling head and the limiting rod, the threaded connector is matched with the internal thread rings, a waterproof shell is arranged at the lower end of the sampling head, a cleaning motor is arranged in the waterproof shell, a rotating frame is rotatably connected to the lower end of the waterproof shell, and a cleaning scraper is arranged at the outer end of the rotating frame; according to the equipment, the diving of the sampling head is more stable, the blockage caused by impurities in water is avoided, the sampling is more stable, the pollution caused by the mixing of different water samples is avoided, and the sampling quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, and more specifically, to a water quality sampling device. Background Art

[0002] As the demand for environmental protection increases, the protection of water sources is also gradually valued. Water quality testing is needed to confirm the types and concentrations of substances contained in the target water body, so as to analyze the current status of the water environment and the impact of engineering construction or study the migration and transformation laws of pollutants. Therefore, a sampling device is needed to sample water at a specific location.

[0003] Common sampling devices are generally arranged on a sampling boat or a bracket on the shore, and are moved by a driving device on the sampling boat or the bracket. The sampling head is placed in a book to extract water samples, thereby sampling. In order to sample waters of different depths, common sampling devices generally have a long water hose for transferring water samples, and a retractable roller structure is provided to control the extension length of the water hose, thereby controlling the depth position of the sampling head in the water. However, the sampling head is only connected by the water hose and lacks a fixed structure. It can remain vertically downward in stable waters, but in flowing waters, especially in deep waters where the water flow is unstable, the sampling head may be affected by the water flow and move to one side, causing the water hose to tilt, causing the sampling head to deviate from the original sampling position. , resulting in inaccurate sampling; moreover, in the depths of the river or some dirty waters, the water may include a large amount of debris such as silt or aquatic plants. When sampling, if these debris move toward the sampling head and cover the water inlet of the sampling head, the sampling head will be blocked, affecting the sampling process; in addition, according to different usage requirements, in order to facilitate work, it is sometimes necessary to sample at multiple positions in sequence with the sampling equipment, and lead different water samples along the water hose and collect them through different collection equipment. However, when the water is led out, it flows through the sampling head and the water hose and other sampling structures, and the same water sample will not be completely discharged. When sampling water at a new position, the old water sample remaining in the sampling structure will mix with the new water sample, affecting the quality of the water sample and thus affecting the detection quality. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the problems existing in the prior art, the utility model provides a water quality sampling device to solve the technical problems mentioned in the background technology that the existing sampling device has a simple structure and is unstable in use.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water quality sampling device, comprising a sampling head, a sample guide tube is provided at the upper end of the sampling head, a collection tank is provided beside the sample guide tube, the sampling head cooperates with the collection tank through the sample guide tube, a support frame is provided above the sampling head, a limit rod is provided in the support frame, a threaded connector is provided at the lower end of the limit rod, an internal threaded ring is provided at the upper end of the sampling head and the limit rod, and the threaded connector cooperates with the internal threaded ring;

[0008] A waterproof shell is provided at the lower end of the sampling head, a cleaning motor is provided in the waterproof shell, a rotating frame is rotatably connected at the lower end of the waterproof shell, a cleaning scraper is provided at the outer end of the rotating frame, and the output end of the cleaning motor is connected to the rotating frame.

[0009] The utility model is further configured such that a mounting seat is provided at one end of the collection tank, the collection tank is arranged on the mounting seat, a connecting pipe is provided at one end of the mounting seat, a collection pump is provided at one end of the connecting pipe, and the connecting pipe is connected to the sample guide tube through the collection pump, and the other end cooperates with the collection tank to facilitate replacement of the collection tank.

[0010] The utility model is further configured that a discharge pipe is provided at one end of the connecting pipe, and a switching valve is provided on the connecting pipe to discharge the mixed water sample.

[0011] The utility model is further configured that one end of the connecting pipe is provided with a conducting hose, and the other end of the conducting hose is provided with a mounting cover, and the mounting cover cooperates with the collection tank to ensure the connection with the collection tank.

[0012] The utility model is further configured that the support frame is provided with a first limiting ring and a second limiting ring, and the second limiting ring is arranged at the lower end of the first limiting ring, so as to better limit the limiting rod.

[0013] The utility model is further configured such that the first limiting ring and the second limiting ring are both provided with an adjusting bolt, the adjusting bolt cooperates with the corresponding first limiting ring or the second limiting ring, the other end of the adjusting bolt is rotatably connected and provided with a clamping block, the clamping block slidingly cooperates with the corresponding first limiting ring or the second limiting ring to keep the limiting rod stable and stabilize the sampling head.

[0014] The utility model is further configured that a fixing frame is provided on the sampling head, a filter is provided on the fixing frame, the filter is arranged around the sampling head and cooperates with the sampling head to avoid clogging of the sampling head.

[0015] The utility model is further configured such that a mounting ring is provided on the upper end of the fixing frame, a mounting groove is provided on the sampling head, and the mounting ring cooperates with the mounting groove to facilitate replacement and cleaning of the filter.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a water quality sampling device, which has the following beneficial effects:

[0018] 1. The support frame and the limit rod are coordinated to thicken the limit structure, and the threaded connector and the internal threaded ring are coordinated to form a connecting structure, so that the limit rod can be connected to the sampling head, and multiple limit rods can also be connected to each other. The descent depth of the sampling head is controlled by combining multiple limit rods, and the movement of the limit rod is limited by the support frame and the limit rod. The position of the sampling head is limited by the limit rod, so that the sampling head can stably dive to the target sampling position, ensuring the stability and accuracy of sampling.

[0019] 2. Provide a waterproof installation structure through the waterproof shell, provide power through the cleaning motor, and guide through the rotating frame, so that the cleaning motor drives the cleaning scraper to rotate through the rotating frame. The cleaning scraper rotates around the outer end of the sampling head to clean the water plants, mud and other debris covering the surrounding of the sampling head, ensuring the cleanliness and smoothness of the water inlet of the sampling head and ensuring the stable sampling.

[0020] 3. The mounting seat provides a mounting structure for the collection tank, and different collection tanks can be replaced. The water sample transmitted from the sample tube is introduced into the collection tank through the connecting pipe for retention. The discharge pipe cooperates with the connecting pipe to form another set of diversion structures. The switching valve is used as a control structure. When the water sample transmitted from the sample guide tube is a mixed water sample, the water sample is made to flow out from the discharge pipe after the connecting pipe is connected. After the transmitted water sample becomes a single water sample, the water sample is introduced into the collection tank to ensure the accuracy of the taken water sample and the stability of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front structure of a water quality sampling device in the utility model;

[0022] Figure 2 This is a schematic diagram of the matching structure of the support frame and the limiting rod in the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sampling head after disassembly and the filter screen in the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the fixed frame in the utility model after being disassembled and cooperating with the sampling head;

[0025] Figure 5 This is a schematic diagram of the matching structure between the lower part of the sampling head and the cleaning motor in the utility model.

[0026] In the figure: 1. sampling head; 2. sample guide tube; 3. collection tank; 4. support frame; 5. limit rod; 6. threaded connector; 7. internal thread ring; 8. waterproof shell; 9. cleaning motor; 10. rotating frame; 11. cleaning scraper; 12. mounting seat; 13. connecting pipe; 131. collection pump; 14. discharge pipe; 15. switching valve; 16. conducting hose; 17. mounting cover; 18. first limit ring; 19. second limit ring; 20. adjusting bolt; 21. clamping block; 22. fixing frame; 23. filter screen; 24. mounting ring; 25. mounting groove. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0030] See also Figure 1-5 A water quality sampling device comprises a sampling head 1, a sample guide tube 2 is arranged at the upper end of the sampling head 1, a collection tank 3 is arranged beside the sample guide tube 2, the sampling head 1 cooperates with the collection tank 3 through the sample guide tube 2, a support frame 4 is arranged above the sampling head 1, a limit rod 5 is arranged in the support frame 4, a threaded connector 6 is arranged at the lower end of the limit rod 5, an internal threaded ring 7 is arranged at the upper end of the sampling head 1 and the limit rod 5, and the threaded connector 6 cooperates with the internal threaded ring 7;

[0031] A waterproof shell 8 is provided at the lower end of the sampling head 1, and a cleaning motor 9 is provided inside the waterproof shell 8. A rotating frame 10 is rotatably connected to the lower end of the waterproof shell 8, and a cleaning scraper 11 is provided at the outer end of the rotating frame 10. The output end of the cleaning motor 9 is connected to the rotating frame 10.

[0032] In this embodiment, when the device is used, the sampling head 1 is immersed in water under the connection of the sample guide tube 2, and a limiting structure is provided by the support frame 4. When the sampling head 1 sinks, the threaded connector 6 is rotated and inserted into the internal threaded ring 7, so that the limiting rod 5 is installed on the sampling head 1. At the same time, as the sampling head 1 continues to descend, a new limiting rod 5 is installed on the original limiting rod 5 through the cooperation of the threaded connector 6 and the internal threaded ring 7. By installing a suitable number of limiting rods 5, the combined length of the limiting rods 5 is matched with the working depth of the sampling head 1. The limiting rods 5 cooperate with the support frame 4, and the support frame 4 limits the movement and tilt of the limiting rods 5. Under the limiting action of the limiting rods 5, the position of the sampling head 1 in the deep river water is guaranteed to be stable, so that the sampling head 1 can stably collect water samples at the corresponding position and introduce them into the collection tank 3 through the sample guide tube 2.

[0033] More specifically, when the sampling head 1 is working, the cleaning motor 9 works under the protection of the waterproof shell 8. The cleaning motor 9 drives the rotating frame 10 to rotate, and the cleaning scraper 11 is driven to rotate through the rotating frame 10. The cleaning scraper 11 rotates around the side of the sampling head 1 to scrape off foreign matter such as aquatic plants, mud and sand covering the sampling head 1, thereby ensuring the smooth flow of the entrance part of the sampling head 1 and ensuring the stability of water quality sampling.

[0034] See also Figure 1 As an implementation method for replacing the collecting tank 3: a mounting seat 12 is provided at one end of the collecting tank 3, the collecting tank 3 is arranged on the mounting seat 12, a collecting pump 131 is provided at one end of the connecting pipe 13, and is connected to the sample guide tube 2 through the collecting pump 131, and the other end cooperates with the collecting tank 3.

[0035] Specifically, the mounting seat 12 is used for support and provides a structure for placing the collecting tank 3. The collecting tank 3 cooperates with the sample guide tube 2 through the cooperation of the connecting tube 13 and the collecting pump 131. Under the action of the collecting pump 131, the water sample introduced by the sample guide tube 2 is received.

[0036] Please refer to Figure 1 As an implementation method for stabilizing sampling: a discharge pipe 14 is provided at one end of the connecting pipe 13 , and a switching valve 15 is provided on the connecting pipe 13 .

[0037] Specifically, the connection direction of the connecting pipe 13 is controlled by the switching valve 15. When the sampling head 1 is inserted into the water or the sampling position of the sampling head 1 is changed, the sampling head 1 will contact the water samples at multiple positions. At this time, the connecting pipe 13 and the drainage pipe 14 are in a connected state. After the sampling head 1 moves to the target position, sampling is carried out. At this time, the sample collected is a mixed water sample. The connecting pipe 13 and the drainage pipe 14 are in a connected state. The water sample flowing into the connecting pipe 13 will not enter the collection tank 3, but will directly flow out from the drainage pipe 14. After waiting for a period of time, the mixed water sample will be discharged. After the water sample in the sample guide tube 2 becomes pure, the switching valve 15 is controlled to connect the connecting pipe 13 with the collection tank 3, and the water sample is collected through the collection tank 3.

[0038] Please refer to Figure 1 As a further implementation of the mounting seat 12 : a conducting hose 16 is provided at one end of the connecting pipe 13 , and a mounting cover 17 is provided at the other end of the conducting hose 16 , and the mounting cover 17 cooperates with the collecting tank 3 .

[0039] Specifically, when installing the collection tank 3, place the collection tank 3 on the mounting seat 12, and then cover the collection tank 3 with the mounting cover 17 to cooperate with the collection tank 3 so that the connecting pipe 13 is connected to the collection tank 3 through the cooperation of the conducting hose 16 and the mounting cover 17, and introduce the water sample into the collection tank 3.

[0040] Please refer to Figure 2 As a further implementation of the support frame 4 , a first limiting ring 18 and a second limiting ring 19 are provided in the support frame 4 , and the second limiting ring 19 is arranged at the lower end of the first limiting ring 18 .

[0041] Specifically, the first limiting ring 18 and the second limiting ring 19 cooperate to limit the limiting rod 5 from two upper and lower points to prevent the limiting rod 5 from tilting.

[0042] Please refer to Figure 2 As a further implementation of the support frame 4 ring: the first limiting ring 18 and the second limiting ring 19 are both provided with an adjusting bolt 20, the adjusting bolt 20 cooperates with the corresponding first limiting ring 18 or the second limiting ring 19, and the other end of the adjusting bolt 20 is rotatably connected with a clamping block 21, and the clamping block 21 is slidably matched with the corresponding first limiting ring 18 or the second limiting ring 19.

[0043] Specifically, by rotating the adjusting bolt 20, the two sets of adjusting bolts are matched with the corresponding first limiting ring 18 or the second limiting ring 19 to move, and the clamping block is pushed to move, so that the two sets of clamping blocks are matched with the corresponding first limiting ring and second limiting ring 19 to clamp and fix the middle limiting rod 5.

[0044] Please refer to Figure 3As a further implementation of the sampling head 1 : a fixing frame 22 is provided on the sampling head 1 , a filter net 23 is provided in the fixing frame 22 , and the filter net 23 is arranged around the sampling head 1 and cooperates with the sampling head 1 .

[0045] Specifically, under the fixation of the fixing frame 22 , the filter screen 23 plays a filtering role to protect the sampling head 1 and prevent foreign matter from entering the sampling head 1 .

[0046] Please refer to Figure 3 and Figure 4 As a further implementation of the fixing frame 22 : a mounting ring 24 is provided at the upper end of the fixing frame 22 , a mounting groove 25 is opened on the sampling head 1 , and the mounting ring 24 cooperates with the mounting groove 25 .

[0047] Specifically, the fixing frame 22 cooperates with the mounting groove 25 through the mounting ring 24 , so as to facilitate disassembly and assembly on the sampling head 1 and replacement of the filter screen 23 .

[0048] In summary, when the overall device is in use or running:

[0049] When the equipment is used for sampling, the position of the support frame 4 is fixed, and it can be installed on a sampling ship or a rack on the shore, etc. With the sample guide tube 2 connected, the sampling head 1 is immersed in the water, and the support frame 4 provides a limiting structure. When the sampling head 1 sinks, the threaded connector 6 is rotated and inserted into the internal threaded ring 7, so that the limiting rod 5 is installed on the sampling head 1. At the same time, as the sampling head 1 continues to descend, the new limiting rod 5 is installed on the original limiting rod 5 through the cooperation of the threaded connector 6 and the internal threaded ring 7. By installing a suitable number of limiting rods 5, the combined length of the limiting rods 5 is matched with the working depth of the sampling head 1. The limiting rod 5 is limited from the upper and lower points by the cooperation between the limiting rod 5 and the support frame 4, and by the cooperation of the first limiting ring 18 and the second limiting ring 19, so as to avoid the limiting rod 5 from tilting, and when the sampling head 1 is determined, the limiting rod 5 is fixed to the bottom of the support frame 4. After the position is reached, by rotating the adjusting bolt 20, the two sets of adjustment bolts are matched with the corresponding first limiting ring 18 or the second limiting ring 19 to move, and the clamping block is pushed to move, so that the two sets of clamping blocks are matched with the corresponding first limiting ring and the second limiting ring 19, the middle limiting rod 5 is clamped and fixed, and the movement and inclination of the limiting rod 5 are limited by the supporting frame 4, so that the maximum movement of the sampling head 1 is limited by the limiting rod 5. Under the limiting action of the limiting rod 5, the position of the sampling head 1 in the deep river water is guaranteed to be stable, so that the sampling head 1 can stably collect water samples at the corresponding position and introduce them into the collecting tank 3 through the sample guide tube 2. The collecting tank 3 is installed on the mounting seat 12 and supported by the mounting seat 12. The collecting tank 3 is matched with the sample guide tube 2 through the connecting pipe 13 and the collecting pump 131. Under the action of the collecting pump 131, the water sample introduced by the sample guide tube 2 is received.

[0050] After the water sample is taken, if it is necessary to take samples at different depths or positions, the installation cover 17 is removed from the collection tank 3, the collection tank 3 with the water sample is taken out, and a new collection tank 3 is loaded, and then the installation cover 17 is installed on the collection tank 3, and cooperates with the collection tank 3, so that the connecting pipe 13 is connected to the collection tank 3 through the cooperation of the conducting hose 16 and the installation cover 17, and the water sample is introduced into the collection tank 3. In addition, when the sampling position of the sampling head 1 is changed and the sampling head 1 is inserted into the water, the sampling head 1 will contact the water samples at multiple positions, and the switching valve 15 is used to switch the sampling head 15. Control the connection direction of the connecting pipe 13, so that the connecting pipe 13 and the discharge pipe 14 are in a connected state. After the sampling head 1 moves to the target position, sampling is carried out. At this time, the sample collected is a mixed water sample, and the connecting pipe 13 and the discharge pipe 14 are in a connected state. The water sample flowing into the connecting pipe 13 will not enter the collection tank 3, but will directly flow out from the discharge pipe 14 to discharge the mixed water sample. After waiting for a period of time, after the water sample in the sample guide tube 2 becomes pure, control the switching valve 15 to connect the connecting pipe 13 with the collection tank 3, and collect the water sample through the collection tank 3.

[0051] When the sampling head 1 is working, the sampling head 1 is located in the water. Under the fixation of the fixed frame 22, the filter net 23 plays a filtering role to protect the sampling head 1 and prevent foreign matter from entering the sampling head 1. The cleaning motor 9 works under the protection of the waterproof shell 8. The cleaning motor 9 drives the rotating frame 10 to rotate, and the cleaning scraper 11 is driven to rotate through the rotating frame 10. The cleaning scraper 11 rotates around the side of the sampling head 1 to scrape off foreign matter such as water plants and mud covering the sampling head 1, thereby ensuring the smoothness of the entrance part of the sampling head 1 and ensuring the stability of water quality sampling. In addition, the fixed frame 22 cooperates with the mounting groove 25 through the mounting ring 24, which is convenient for disassembly and assembly on the sampling head 1, and convenient for replacing the filter net 23 and cleaning the filter net 23.

[0052] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A water quality sampling device, comprising a sampling head (1), wherein a sample guide tube (2) is provided at the upper end of the sampling head (1), a collection tank (3) is provided beside the sample guide tube (2), and the sampling head (1) cooperates with the collection tank (3) through the sample guide tube (2), wherein: A support frame (4) is provided above the sampling head (1), a limiting rod (5) is provided in the support frame (4), a threaded connector (6) is provided at the lower end of the limiting rod (5), an internal threaded ring (7) is provided at the upper ends of the sampling head (1) and the limiting rod (5), and the threaded connector (6) cooperates with the internal threaded ring (7); A waterproof shell (8) is provided at the lower end of the sampling head (1), a cleaning motor (9) is provided inside the waterproof shell (8), a rotating frame (10) is rotatably connected to the lower end of the waterproof shell (8), a cleaning scraper (11) is provided at the outer end of the rotating frame (10), and the output end of the cleaning motor (9) is connected to the rotating frame (10).

2. A water quality sampling device according to claim 1, characterized in that: A mounting seat (12) is provided at one end of the collection tank (3), and the collection tank (3) is arranged on the mounting seat (12). A connecting pipe (13) is provided at one end of the mounting seat (12). A collection pump (131) is provided at one end of the connecting pipe (13), and the connecting pipe (13) is connected to the sample guide tube (2) through the collection pump (131), and the other end cooperates with the collection tank (3).

3. A water quality sampling device according to claim 2, characterized in that: A discharge pipe (14) is provided at one end of the connecting pipe (13), and a switching valve (15) is provided on the connecting pipe (13).

4. A water quality sampling device according to claim 2, characterized in that: A conducting hose (16) is provided at one end of the connecting pipe (13), and a mounting cover (17) is provided at the other end of the conducting hose (16), wherein the mounting cover (17) cooperates with the collecting tank (3).

5. A water quality sampling device according to claim 1, characterized in that: The support frame (4) is provided with a first limiting ring (18) and a second limiting ring (19), and the second limiting ring (19) is arranged at the lower end of the first limiting ring (18).

6. A water quality sampling device according to claim 5, characterized in that: The first limiting ring (18) and the second limiting ring (19) are both provided with an adjusting bolt (20), and the adjusting bolt (20) cooperates with the corresponding first limiting ring (18) or the second limiting ring (19). The other end of the adjusting bolt (20) is rotatably connected with a clamping block (21), and the clamping block (21) is slidably matched with the corresponding first limiting ring (18) or the second limiting ring (19).

7. A water quality sampling device according to claim 1, characterized in that: A fixing frame (22) is provided on the sampling head (1), a filter screen (23) is provided in the fixing frame (22), and the filter screen (23) is arranged around the sampling head (1) and cooperates with the sampling head (1).

8. A water quality sampling device according to claim 7, characterized in that: The upper end of the fixing frame (22) is provided with a mounting ring (24), the sampling head (1) is provided with a mounting groove (25), and the mounting ring (24) cooperates with the mounting groove (25).

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