Water quality monitoring sampling device for reservoirs

Abstract

The utility model discloses a reservoir water quality monitoring sampling device, including adjustable sampling depth's support rod subassembly, sampling subassembly: sampling subassembly includes with support rod subassembly sliding connection's sealing plate, sealing plate sliding connection piston rod, piston rod screw connection adjustable position's adjusting plate, sealing plate sliding connection slide, be provided with second spring between adjusting plate with The slide, pressure regulating subassembly, pressure regulating subassembly includes transmission gear group, transmission gear group still includes take up reel and pay -off reel, take up reel with support rod subassembly between be connected with first pull rope, pay -off reel with slide between be connected with second pull rope, the utility model discloses can adapt to the change of reservoir bottom when sampling, realize when the bottom shallow, the most lower sampling bottle can adjust pressure and be convenient for sampling, and finally complete the sampling of different depth.

Description

Technical Field

[0001] This utility model relates to the field of monitoring and sampling technology, specifically to a reservoir water quality monitoring and sampling device. Background Technology

[0002] A reservoir is generally an artificial body of water formed in valleys, rivers, or low-lying areas using engineering projects such as dams, dikes, sluices, and weirs. It is an important measure for regulating runoff and altering the natural distribution of water resources, playing a vital role in socio-economic development. Reservoir water quality refers to the comprehensive reflection of the environmental quality of the reservoir's water body. To understand the quality of the water stored in the reservoir, it is necessary to regularly sample and analyze the water to conduct routine monitoring and ensure the safety of the water quality within the reservoir.

[0003] A search revealed that patent CN 220751738 U discloses a reservoir sampling device, comprising: a support plate; a motor fixedly connected to one end of the upper part of the support plate, a long shaft provided at one end of the motor, a gear fixedly connected to one end of the outer wall of the long shaft, a support rod fixedly connected to one end of the lower part of the support plate, a connector fixedly connected to one end of the support rod, and a sampling mechanism provided at one end of the connector.

[0004] However, the above-mentioned device also has the following problems: the depth data is distorted due to different depths at the bottom of the reservoir or siltation; during sampling, the upper sampling mechanisms are easily restricted by the bottom sampling mechanism touching the bottom, and the specified sampling depth cannot be reached, which is not conducive to reservoir water quality monitoring; and each sampling mechanism is driven by gears, and if one of the sampling mechanisms is blocked by foreign objects, the water inlet valves of all sampling mechanisms cannot be opened normally, resulting in sampling failure. Utility Model Content

[0005] To address the problems in the existing technology, such as insufficient sampling depth due to the influence of the reservoir bottom and sampling failure due to the inability to open the inlet valve, this utility model provides a reservoir water quality monitoring sampling device to solve the problems of insufficient sampling depth due to the influence of the reservoir bottom and sampling failure caused by foreign objects.

[0006] The technical solution adopted by this utility model to solve its technical problem is: This utility model proposes a reservoir water quality monitoring sampling device, including a support rod assembly with adjustable sampling depth; a sampling assembly: the sampling assembly includes a sealing plate slidably connected to the support rod assembly, the sealing plate is slidably connected to a piston rod, the piston rod is threadedly connected to an adjustable plate, the sealing plate is slidably connected to a sliding plate, and a second spring is provided between the adjustable plate and the sliding plate; a pressure regulating assembly, the pressure regulating assembly includes a transmission gear set, the transmission gear set further includes a rope take-up wheel and a rope release wheel, the rope take-up wheel is connected to the support rod assembly with a first pull rope, and the rope release wheel is connected to the sliding plate with a second pull rope.

[0007] Preferably, the support rod assembly includes a head rod, the head rod is fixedly connected to an intermediate rod, the intermediate rod is slidably connected to a tail rod, the head rod, the intermediate rod and the tail rod are slidably connected to the sealing plate by a first spring, the head rod, the intermediate rod and the tail rod are respectively provided with an auxiliary base plate that cooperates with the sealing plate, the pressure regulating assembly is fixedly connected to the tail rod, and the tail rod is fixedly connected to one end of the first pull rope.

[0008] Preferably, the tail rod is slidably connected to the sleeve via a third spring, the elastic force of the third spring being greater than that of the second spring. The upper end of the sleeve is fixedly connected to the intermediate rod. When the tail rod slides upward, the release wheel releases the second pull rope through the transmission gear set, and the slide plate slides downward, causing the elastic force of the second spring to decrease.

[0009] Preferably, the tail rod is slidably connected to a ratchet block at one end of the sleeve, the sleeve is machined with several sets of ratchet teeth that cooperate with the ratchet block, and a through groove is opened on one side of the ratchet teeth on the sleeve, the through groove being slidably connected to a reset plate.

[0010] Preferably, the sealing plate is fixedly connected to a fixing sleeve, the piston rod is inserted into the fixing sleeve, the fixing sleeve has a sliding groove, and the sliding plate slides in the sliding groove.

[0011] Preferably, the piston rod has a water inlet channel, and the fixed sleeve has a water passage hole that can cooperate with the water inlet channel.

[0012] Preferably, an air pipe is also fixed on the sealing plate, and a one-way valve is provided at the outlet of the air pipe.

[0013] Preferably, the transmission gear set includes at least two sets of gears with different transmission ratios. The take-up wheel is fixed to the small-diameter gear of the transmission gear set, and the release wheel is fixed to the large-diameter gear of the transmission gear set. When the tail rod moves into the sleeve under external force, the slide plate slides downward so that the release wheel can drive the take-up wheel to rotate rapidly.

[0014] Preferably, the first rod, the middle rod, and the tail rod are each provided with a clamp, which cooperates with the sealing plate to clamp and position the sampling bottle.

[0015] Preferably, the sealing plate is fixed with a rubber layer for enhancing the seal.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the cooperation of the transmission gear set with the tail rod and the slide plate, affected by the depth of the bottom of the reservoir, when the tail rod touches the bottom and moves into the sleeve, the slide plate slides downward, which increases the length of the pre-set second spring, thereby reducing the bearing pressure of the piston rod. This allows the sampling bottle fixed by the tail rod to also be sampled after other sampling bottles at different depths reach the specified depth, thus completing the sampling at different depths.

[0017] 2. The water inlet of each sampling bottle at different depths is individually controlled by a piston rod and a second spring, which can prevent the overall sampling from failing due to foreign objects in one sampling bottle. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a utility model Figure 1 Enlarged view of point B in the middle; Figure 4 This is a utility model Figure 1 Enlarged view of point C in the middle; Figure 5 This is a schematic diagram of the piston rod in the water inlet state of this utility model; Figure 6 This is a three-dimensional schematic diagram of the internal structure of the tail rod and sleeve of this utility model; Figure 7 This is a top view of the clip of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Tail rod; 2. First pull rope; 3. Second pull rope; 4. Intermediate rod; 5. First rod; 6. Sealing plate; 7. Adjusting plate; 8. Piston rod; 9. Slide plate; 10. Air pipe; 11. Fixing sleeve; 12. Water inlet channel; 13. Reset plate; 14. Sleeve; 15. Racket; 16. Racket block; 17. Transmission gear set; 18. Slide groove; 19. Through groove; 20. Clamp; 171. Rope take-up pulley; 172. Rope release pulley. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] Example 1: like Figure 1 - Figure 7 As shown in the figure, this embodiment proposes a water quality monitoring and sampling device for reservoirs, including a head rod 5, a middle rod 4 fixedly connected to the head rod 5 by bolts and nuts, a sleeve 14 fixedly connected to the middle rod 4 by bolts and nuts, the sleeve 14 having an interior cavity, a tail rod 1 slidably placed in the interior cavity of the sleeve 14, a third spring being provided between the tail rod 1 and the sleeve 14, one end of the third spring being connected to the tail rod 1, and the other end of the third spring being connected to the sleeve 14.

[0022] Specifically, the first rod 5 and the intermediate rod 4 are of standard length, for example, 1 meter. The maximum extension length of the tail rod 1 and the sleeve 14 is the same as the standard length of the first rod 5 and the intermediate rod 4, which is also 1 meter. During sampling, samples are usually taken at a depth of a whole meter underwater. The intermediate rod 4 can be increased appropriately according to actual needs. In shallower areas, the intermediate rod 4 can be omitted, and the first rod 5 and the sleeve 14 can be directly fixedly connected.

[0023] Furthermore, the first rod 5, the middle rod 4, and the tail rod 1 are slidably connected to the sealing plate 6 by the first spring. Under the action of the first spring, the sealing plate 6 maintains sufficient downward force to ensure that the sampling bottle can be sealed.

[0024] Specifically, the upward movement of the sealing plate 6 compresses the first spring, making it easier to place the sampling bottle under the sealing plate 6. After being released, the sealing plate 6 moves downward and contacts the mouth of the sampling bottle, forming a seal at the mouth of the sampling bottle.

[0025] Furthermore, the first rod 5, the middle rod 4, and the tail rod 1 are each provided with an auxiliary base plate that cooperates with the sealing plate 6. The auxiliary base plate is used to support the sampling bottle. The first rod 5, the middle rod 4, and the tail rod 1 are each provided with a clamp 20. The clamp 20 cooperates with the sealing plate 6 to clamp and position the sampling bottle.

[0026] Furthermore, the sealing plate 6 is fixedly connected to the fixing sleeve 11, the piston rod 8 is inserted into the fixing sleeve 11, and the piston rod 8 can slide up and down relative to the fixing sleeve 11. The upper end of the piston rod 8 is threadedly connected to the adjusting plate 7, which can adjust the position. The fixing sleeve 11 is fitted with a sliding plate 9, and the fixing sleeve 11 has a sliding groove 18. The sliding plate 9 can slide in the sliding groove 18. A second spring is provided between the adjusting plate 7 and the sliding plate 9. By moving the height position of the adjusting plate 7, the height of the second spring can be adjusted, thereby adjusting the water pressure at different depths that the piston rod 8 can adapt to.

[0027] Specifically, according to publicly available information, different water depths correspond to different pressures. For example, the pressure at a water depth of 1 meter is 9.81 kPa; at 1.5 meters, it is 14.72 kPa; at 2 meters, it is 19.62 kPa; at 2.5 meters, it is 24.53 kPa; at 3 meters, it is 29.43 kPa, and so on. For every half-meter increase in depth, the pressure increases by 4.905 kPa. Therefore, the pressure exerted by the piston rod 8 in conjunction with the second spring varies at different depths of the sampling bottle. The piston rod 8 has a water inlet channel 12, and the fixed sleeve 11 has a water passage hole that can cooperate with the water inlet channel 12. When the specified depth is reached, the water pressure matches the pressure borne by the second spring. At this time, the pressure inside the sampling bottle is lower than the external water pressure. Under the action of water pressure, the piston rod 8 moves towards the sampling bottle, thereby connecting the water passage hole of the fixed sleeve 11 with the water inlet channel 12, allowing water to enter the sampling bottle. After a certain amount of water enters the sampling bottle, the water pressure inside and outside the sampling bottle is balanced, causing the piston rod 8 to reset under the action of the second spring.

[0028] Specifically, the clamp 20 has a symmetrical design and is slidably connected to the first rod 5, the middle rod 4, or the tail rod 1 via an auxiliary spring. The auxiliary spring enables the clamp 20 to be clamped and positioned towards the center.

[0029] Furthermore, an air tube 10 is fixed on the sealing plate 6, and a one-way valve is provided at the outlet of the air tube 10. The one-way valve allows gas to escape when sampling is performed in the sampling bottle, preventing water from entering the sampling bottle and making it difficult to fill due to the influence of gas.

[0030] Furthermore, the sealing plate 6 is fixed with a rubber layer for reinforcing the seal of the sampling bottle.

[0031] Furthermore, the tail rod 1 is slidably connected to a ratchet block 16 at one end of the sleeve 4 via a fourth spring. One end of the fourth spring is connected to the ratchet block 16, and the other end of the fourth spring is connected to the tail rod 1. The sleeve 14 is machined with several sets of ratchet teeth 15 that cooperate with the ratchet block 16. A through groove 19 is opened on one side of the ratchet teeth 15 on the sleeve 4. The through groove 19 is slidably connected to the reset plate 13. The reset plate 13 is slidably connected to the sleeve 14 via a fifth spring. One end of the fifth spring is connected to the reset plate 13, and the other end of the fifth spring is connected to the sleeve 14.

[0032] Specifically, when the tail rod 1 touches the bottom of the reservoir, it compresses the third spring and slides into the sleeve 14. At the same time, the ratchet block 16, with the cooperation of the fourth spring, engages with the ratchet tooth 15 to form a fixed position. This allows the depth of the bottom of the reservoir to be determined based on the amount of retraction of the tail rod 1 after it is lifted out of the water. When resetting, pressing the reset plate 13 causes the ratchet block 16 to disengage from the ratchet tooth 15 and resets under the action of the third spring. The fifth spring provides the reset force for the reset plate 13.

[0033] Furthermore, the sleeve 14 is fixedly connected to the transmission gear set 17, which includes at least two sets of gears with different transmission ratios. The transmission gear set 17 also includes a take-up reel 171 and a release reel 172. The take-up reel 171 is fixed to the small-diameter gear of the transmission gear set 17, and the release reel 172 is fixed to the large-diameter gear of the transmission gear set 17. The take-up reel 171 is fixedly connected to the first pull rope 2, and the other end of the first pull rope 2 is fixedly connected to the tail rod 1. The release reel 172 is fixedly connected to the second pull rope 3, and the other end of the second pull rope 3 is fixedly connected to the slide plate 9.

[0034] Specifically, through the transmission ratio, the large distance released by the first pull rope 2 is reflected in the small distance released by the second pull rope 3. For example, if the transmission ratio is 1:50, the tail rod 1 slides 50 cm into the sleeve 14, so that the first pull rope 2 is wound up by the rope take-up wheel 171 by 50 cm. At this time, the rope release wheel 172 makes the second pull rope 3 release a length of 1 cm, that is, the slide plate 9 moves down 1 cm.

[0035] Specifically, when the sleeve 14 and tail rod 1 are in their initial state, the elastic force of the third spring is greater than that of the second spring, which allows the slide plate 9 of the third lifting belt to be located at the uppermost end of the chute 18. By moving the adjusting plate 7, the third spring adapts to the water pressure at the sampling depth. When the depth at the bottom of the reservoir is less than the standard sampling depth, or the original data is deep enough, or the depth is reduced due to siltation or other reasons, the tail rod 1 contacts the bottom of the reservoir. Under external force, the tail rod 1 compresses the third spring inward from the sleeve 14, and the first pull rope changes from its initial taut state to a slack state. At this time, the slide plate 9 slides downward under the action of the second spring, and the release wheel 172 rotates through the transmission gear set 17 to release the second pull rope 3. At the same time, the release wheel 172... The winding wheel 171 rotates rapidly, winding up the first pull rope 2. When the first pull rope 2 is wound up to a taut state, the winding wheel 171 stops rotating. At this time, the releasing wheel 172 also stops rotating. The second pull rope 3, under the action of the second spring, stops the sliding plate 9 from sliding and keeps it stationary. At this time, the downward sliding distance of the sliding plate 9 increases the length of the second spring, making the elastic force of the second spring, which adjusts the elastic force according to the predetermined depth, smaller. This allows the bearing pressure of the piston rod 8 to adapt to the sampling depth. After stabilization, the piston rod 8 moves downward, allowing water to smoothly enter the sampling bottle for sampling. After a certain amount of water enters the sampling bottle, the water pressure inside and outside the sampling bottle remains balanced, causing the piston rod 8 to reset under the action of the second spring. Working principle and usage process of this utility model: S1: Based on the theoretical depth of the reservoir, determine the sampling depth, select appropriate tail rod 1 and sleeve 14, intermediate rod 4 and head rod 5 for assembly, and adjust the sealing plate 6 that fixes the sampling bottle at different depths according to the water pressure at different depths, so that the adjustment plate 7 and the corresponding piston rod 8 and the second spring can adapt to the water pressure at different depths.

[0036] S2: Fix the sampling bottle in the sealing plate 6 area at the corresponding depth position, and use the clamp 20 for auxiliary fixation. Vertically send the sampling device into the water. After reaching the specified depth, under the combined effect of water pressure and low pressure inside the sampling bottle, the piston rod 8 slides downward to realize water intake and sampling of the sampling bottle. At the same time, the gas inside the bottle is discharged through the air tube 10. When the water in the sampling bottle reaches the required amount, the pressure inside and outside the bottle is balanced. At this time, the piston rod 8 resets and closes the water inlet channel 12.

[0037] S3: After the sampling device enters the water, before reaching the designated depth, the tail rod 1 touches the bottom and presses down on the sampling device, causing the tail rod 1 to move into the sleeve 14. Through the cooperation of the first pull rope 2 and the second pull rope 3 with the transmission gear set 17, the slide plate 9 slides downward, so that the bearing pressure of the piston rod 8 on the sealing plate 6 corresponding to the tail rod 1, in cooperation with the second spring, is adapted to the pressure at the current water depth, so that the above sampling bottles are sampled at the predetermined depth, and the bottom sampling is completed at the same time.

[0038] S4: After sampling is completed in step S2 or S3, remove the sampling bottles from under the corresponding sealing plate 6 in sequence and seal them for storage.

[0039] S5: After removal, press the reset plate 13. Because the spring force of the third spring is greater than that of the second spring, the tail rod 1, the first pull rope 2, and the second pull rope 3 are reset.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A reservoir water quality monitoring and sampling device, characterized in that, include: Adjustable sampling depth support rod assembly; Sampling assembly: The sampling assembly includes a sealing plate (6) slidably connected to the support rod assembly, the sealing plate (6) slidably connected to a piston rod (8), the piston rod (8) threadedly connected to an adjustable plate (7), the sealing plate (6) slidably connected to a sliding plate (9), and a second spring provided between the adjusting plate (7) and the sliding plate (9); The pressure regulating assembly includes a transmission gear set (17), which further includes a take-up rope wheel (171) and a release rope wheel (172). A first pull rope (2) is connected between the take-up rope wheel (171) and the support rod assembly, and a second pull rope (3) is connected between the release rope wheel (172) and the slide plate (9).

2. The reservoir water quality monitoring and sampling device according to claim 1, characterized in that: The support rod assembly includes a head rod (5), which is fixedly connected to an intermediate rod (4). The intermediate rod (4) is slidably connected to a tail rod (1). The head rod (5), intermediate rod (4), and tail rod (1) are slidably connected to the sealing plate (6) via a first spring. The head rod (5), intermediate rod (4), and tail rod (1) are each provided with an auxiliary base plate that cooperates with the sealing plate (6). The pressure regulating assembly is fixedly connected to the tail rod (1). The tail rod (1) is fixedly connected to one end of the first pull rope (2).

3. The reservoir water quality monitoring and sampling device according to claim 2, characterized in that: The tail rod (1) is slidably connected to the sleeve (14) via a third spring. The elastic force of the third spring is greater than that of the second spring. The upper end of the sleeve (14) is fixedly connected to the intermediate rod (4). When the tail rod (1) slides upward, the rope release wheel (172) releases the second pull rope (3) through the transmission gear set (17). The slide plate (9) slides downward, causing the elastic force of the second spring to decrease.

4. The reservoir water quality monitoring and sampling device according to claim 3, characterized in that: The tail rod (1) is slidably connected to a ratchet block (16) at one end of the sleeve (14). The sleeve (14) is machined with several sets of ratchet teeth (15) that cooperate with the ratchet block (16). A through groove (19) is opened on one side of the ratchet teeth (15) of the sleeve (14). The through groove (19) is slidably connected to the reset plate (13).

5. The reservoir water quality monitoring and sampling device according to claim 1, characterized in that: The sealing plate (6) is fixedly connected to a fixing sleeve (11), the piston rod (8) is inserted into the fixing sleeve (11), the fixing sleeve (11) has a groove (18), and the sliding plate (9) slides in the groove (18).

6. The reservoir water quality monitoring and sampling device according to claim 5, characterized in that: The piston rod (8) has a water inlet channel (12), and the fixed sleeve (11) has a water passage hole that can cooperate with the water inlet channel (12).

7. The reservoir water quality monitoring and sampling device according to claim 1, characterized in that: An air pipe (10) is also fixed on the sealing plate (6), and a one-way valve is provided at the outlet of the air pipe (10).

8. The reservoir water quality monitoring and sampling device according to claim 3, characterized in that: The transmission gear set (17) includes at least two sets of gears with different transmission ratios. The take-up wheel (171) is fixed to the small-diameter gear of the transmission gear set (17), and the release wheel (172) is fixed to the large-diameter gear of the transmission gear set (17). When the tail rod (1) is moved into the sleeve (14) by external force, the slide plate (9) slides downward so that the release wheel (172) can drive the take-up wheel (171) to rotate quickly.

9. The reservoir water quality monitoring and sampling device according to claim 2, characterized in that: The first rod (5), the middle rod (4) and the tail rod (1) are each provided with a clamp (20), which cooperates with the sealing plate (6) to clamp and position the sampling bottle.

10. The reservoir water quality monitoring and sampling device according to claim 1, characterized in that: The sealing plate (6) is fixed with a rubber layer for enhancing the seal.

Images