A water quality sampling device for water conservancy projects

Abstract

This utility model discloses a water quality sampling device for water conservancy projects, relating to the field of water quality sampling devices. It includes a sampling cylinder with a fixed ring integrally formed on the lower outer wall. An outer connecting ring is fixedly installed on the top of the fixed ring. A piston is slidably mounted on the inner wall of the sampling cylinder, and an inner connecting ring is fixedly installed on the top of the piston. The outer and inner connecting rings are connected by an elastic rubber. A support wheel, supporting the elastic rubber, is rotatably mounted on the top of the sampling cylinder via a bracket. A connecting plate is fixedly installed on the inner wall of the top of the sampling cylinder. A piston rod, penetrating the connecting plate and slidably connected to it, is fixedly installed at the center of the top of the piston. An anti-detachment plate is fixedly installed on the top of the piston rod. This utility model, by setting up a docking mechanism and elastic rubber, can control the piston's reset time, thereby sampling water at different depths.

Description

Technical Field

[0001] This utility model relates to the field of water quality sampling devices, specifically a water quality sampling device for water conservancy projects. Background Technology

[0002] When taking water samples, it is generally only possible to sample at the liquid surface, which is not convenient for sampling at a fixed depth. This is because the water inflow time cannot be controlled, so the sampling process does not have the function of sampling at a fixed depth. Utility Model Content

[0003] The purpose of this utility model is to provide a water quality sampling device for water conservancy projects in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a water quality sampling device for water conservancy projects, comprising a sampling cylinder, a fixing ring integrally formed on the lower outer wall of the sampling cylinder, an outer connecting ring fixedly installed on the top of the fixing ring, a piston slidably installed on the inner wall of the sampling cylinder, an inner connecting ring fixedly installed on the top of the piston, the outer connecting ring and the inner connecting ring being connected by elastic rubber, a support wheel rotatably installed on the top of the sampling cylinder via a bracket to support the elastic rubber, a connecting plate fixedly installed on the inner wall of the top of the sampling cylinder, a piston rod fixedly installed at the center of the top of the piston, penetrating the connecting plate and slidably connected to the connecting plate, an anti-detachment plate fixedly installed on the top of the piston rod, and the connecting plate and the piston rod being connected by a docking mechanism.

[0005] As a further embodiment of this utility model: the docking mechanism includes a locking head that is axially slidably installed inside the piston rod, one end of the locking head extending to the outside of the piston rod, and the end of the locking head located outside the piston rod having a pressure-bearing inclined surface formed therein. The connecting plate has a receiving groove inside for accommodating the locking head, and a spring is fixedly installed between the end of the locking head located inside the piston rod and the inner wall of the piston rod.

[0006] As a further embodiment of this utility model: the docking mechanism also includes an unlocking rope that is fixedly connected to one end of the locking head and extends through to the top of the anti-detachment plate. A reversing wheel is rotatably installed at the bottom eccentric part of the anti-detachment plate via a bracket. A one-way output valve is provided inside the connecting plate to accommodate the reversing wheel. The reversing wheel is used to change the extension direction of the unlocking rope.

[0007] As a further embodiment of this utility model: a water inlet pipe is installed at the center of the bottom plate of the sampling cylinder, a one-way input valve is installed on the water inlet pipe, an exhaust pipe is fixedly installed at the eccentric position of the top of the piston, and a one-way output valve is installed on the exhaust pipe.

[0008] As a further improvement of this utility model: a rope ring is fixedly installed at the top of the sampling tube, and the rope ring is connected to the lowering rope.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. By setting up a docking mechanism and elastic rubber, the piston reset time can be controlled, thereby allowing water samples to be taken at different depths. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0013] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle.

[0014] In the diagram: 1. Sampling cylinder; 2. Fixing ring; 3. Outer connecting ring; 4. Elastic rubber; 5. Connecting plate; 6. Support wheel; 7. Rope loop; 8. Lowering rope; 9. Unlocking rope; 10. Piston rod; 11. Inner connecting ring; 12. Piston; 13. Water inlet pipe; 14. One-way input valve; 15. Exhaust pipe; 16. One-way output valve; 17. Anti-detachment plate; 18. Receiving groove; 19. Locking head; 20. Spring; 21. Reversing wheel. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-3In this embodiment of the present invention, a water quality sampling device for water conservancy projects includes a sampling cylinder 1. A fixing ring 2 is integrally formed on the lower part of the outer wall of the sampling cylinder 1. An outer connecting ring 3 is fixedly installed on the top of the fixing ring 2. A piston 12 is slidably installed on the inner wall of the sampling cylinder 1. An inner connecting ring 11 is fixedly installed on the top of the piston 12. The outer connecting ring 3 and the inner connecting ring 11 are connected by an elastic rubber 4. A support wheel 6 for supporting the elastic rubber 4 is rotatably installed on the top of the sampling cylinder 1 via a bracket. A connecting plate 5 is fixedly installed on the inner wall of the top of the sampling cylinder 1. A piston rod 10 is fixedly installed at the center of the top of the piston 12, penetrating the connecting plate 5 and slidably connected to the connecting plate 5. An anti-detachment plate 17 is fixedly installed on the top of the piston rod 10. The connecting plate 5 and the piston rod 10 are connected by a docking mechanism. A rope ring 7 is fixedly installed on the top of the sampling cylinder 1. The rope ring 7 is connected to a lowering rope 8.

[0017] In this embodiment: Before the device is lowered, the anti-detachment plate 17 is pushed downward by hand. The anti-detachment plate 17 pushes the piston 12 to the lowest position through the piston rod 10. During this process, the elastic rubber 4 is stretched and the air between the top of the bottom plate of the sampling cylinder 1 and the bottom of the piston 12 is discharged. After the piston 12 moves to the lowest point, the docking mechanism inside the piston rod 10 locks and restricts the piston 12 to the current position.

[0018] The device is then lowered into the liquid surface via the lowering rope 8. At this point, the piston 12 is at its lowest position to prevent excessive air from preventing the device from sinking. After the device sinks, the distance below the liquid surface can be confirmed by the length of the lowering rope 8 (e.g., the length marked on the lowering rope 8). Once the lower distance is reached, the docking mechanism is unlocked by pulling it. At this time, the multiple stretched elastic rubbers 4 return to their original positions, pulling the piston 12 upward. The upward movement of the piston 12 generates a negative pressure suction. Under this pressure, the water sample is drawn between the piston 12 and the bottom plate of the sampling cylinder 1, thus satisfying the sampling requirement at the rated water depth.

[0019] Please refer to this carefully. Figure 2 and Figure 3 The docking mechanism includes a locking head 19 axially slidably mounted inside the piston rod 10. One end of the locking head 19 extends through to the outside of the piston rod 10. The end of the locking head 19 located outside the piston rod 10 is formed with a pressure-bearing slope. The connecting plate 5 has a receiving groove 18 inside to accommodate the locking head 19. A spring 20 is fixedly installed between the end of the locking head 19 inside the piston rod 10 and the inner wall of the piston rod 10. The docking mechanism also includes an unlocking rope 9 fixedly connected to one end of the locking head 19 and extending through to the top of the anti-detachment plate 17. A reversing wheel 21 is rotatably mounted at the bottom eccentric part of the anti-detachment plate 17 via a bracket. The connecting plate 5 has a one-way output valve 16 inside to accommodate the reversing wheel 21. The reversing wheel 21 is used to change the extension direction of the unlocking rope 9.

[0020] In this embodiment: During the downward movement of piston 12, piston rod 10 drives locking head 19 to move downward synchronously. Locking head 19 gradually approaches the top of connecting plate 5 until it contacts it. At this time, the pressure-bearing inclined surface at one end of locking head 19 contacts and squeezes the connecting plate 5. At this time, locking head 19 moves towards the inside of piston rod 10 and compresses spring 20 until locking head 19 is misaligned with connecting plate 5. When locking head 19 continues to move downward and aligns with receiving groove 18, spring 20 pushes locking head 19 out and into receiving groove 18, limiting the current position of piston 12.

[0021] During unlocking and sampling, by pulling the unlocking rope 9, the unlocking rope 9 drives the locking head 19 to retract until the locking head 19 is completely misaligned with the receiving groove 18. At this time, the elastic rubber 4 resets, and the piston 12 is pulled upward to reset. The negative pressure generated by the reset draws the water sample of the rated water depth into the sampling tube 1.

[0022] It should be noted that the unlocking rope 9 and the lowering rope 8 are lowered simultaneously, with their other ends both above the liquid surface.

[0023] Please refer to this carefully. Figure 2 A water inlet pipe 13 is installed at the center of the bottom plate of the sampling cylinder 1. A one-way input valve 14 is installed on the water inlet pipe 13. An exhaust pipe 15 is fixedly installed at the eccentric position of the top of the piston 12. A one-way output valve 16 is installed on the exhaust pipe 15.

[0024] In this embodiment: during the downward movement of piston 12, the gas inside sampling cylinder 1 is discharged outward through exhaust pipe 15 and one-way output valve 16, while during the upward reset of piston 12, the suction force generated draws water sample into the device from water inlet pipe 13 and one-way input valve 14.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water quality sampling device for hydraulic engineering, comprising a sampling cylinder (1), characterized in that, A fixing ring (2) is integrally formed on the lower part of the outer wall of the sampling cylinder (1). An outer connecting ring (3) is fixedly installed on the top of the fixing ring (2). A piston (12) is slidably installed on the inner wall of the sampling cylinder (1). An inner connecting ring (11) is fixedly installed on the top of the piston (12). The outer connecting ring (3) and the inner connecting ring (11) are connected by an elastic rubber (4). A support wheel (6) is rotatably installed on the top of the sampling cylinder (1) to support the elastic rubber (4). A connecting plate (5) is fixedly installed on the inner wall of the top of the sampling cylinder (1). A piston rod (10) is fixedly installed at the center of the top of the piston (12), penetrating the connecting plate (5) and slidably connected to the connecting plate (5). An anti-detachment plate (17) is fixedly installed on the top of the piston rod (10). The connecting plate (5) and the piston rod (10) are connected by a docking mechanism.

2. The water quality sampling device for water conservancy projects according to claim 1, characterized in that, The docking mechanism includes a locking head (19) that is axially slidably installed inside the piston rod (10). One end of the locking head (19) extends through to the outside of the piston rod (10). The end of the locking head (19) located outside the piston rod (10) is formed with a pressure-bearing inclined surface. The connecting plate (5) has a receiving groove (18) inside to accommodate the locking head (19). A spring (20) is fixedly installed between the end of the locking head (19) inside the piston rod (10) and the inner wall of the piston rod (10).

3. The water quality sampling device for water conservancy projects according to claim 2, characterized in that, The docking mechanism also includes an unlocking rope (9) that is fixedly connected to one end of the locking head (19) and extends through the top of the anti-detachment plate (17). A reversing wheel (21) is rotatably mounted on the bottom eccentric part of the anti-detachment plate (17) via a bracket. A one-way output valve (16) is provided inside the connecting plate (5) to accommodate the reversing wheel (21). The reversing wheel (21) is used to change the extension direction of the unlocking rope (9).

4. A water quality sampling device for water conservancy projects according to claim 3, characterized in that, A water inlet pipe (13) is installed at the center of the bottom plate of the sampling tube (1), and a one-way input valve (14) is installed on the water inlet pipe (13). An exhaust pipe (15) is fixedly installed at the eccentric position of the top of the piston (12), and a one-way output valve (16) is installed on the exhaust pipe (15).

5. A water quality sampling device for water conservancy projects according to claim 4, characterized in that, A rope ring (7) is fixedly installed at the top of the sampling tube (1), and the rope ring (7) is connected to the lowering rope (8).

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