Water quality detection sampling device for hydraulic engineering

Abstract

The utility model relates to the technical field of water quality detection, in particular to a water quality detection sampling device for hydraulic engineering, which comprises a sampling barrel, a water outlet pipe fixedly connected with one end of the sampling barrel, a balancing weight in threaded connection with the bottom end of the sampling barrel, a barrel cover in threaded connection with one end of the sampling barrel, and a depth-keeping water inlet component inserted in the middle of the barrel cover. One end of the cylinder cover is fixedly connected with a filter cup; according to the water quality detection sampling device for the water conservancy project, the fixed-length rope with the required sampling water depth length is connected to the sealing block and the floating ball in a bolting mode, the sealing block extrudes and seals the sampling barrel under the tension of the spring, after the sealing block and the floating ball are thrown into water, the balancing weight drives the sampling barrel to fall to the required sampling depth, and the sampling barrel is sealed. The fixed-length rope is straightened by the buoyancy of the floating ball and the gravity of the balancing weight, the spring is lengthened, so that the sealing block is separated from the frustum-shaped hole to the position of the limiting stop block, a water sample flows into the sampling barrel, the scale mark of the floating ball on the water surface is stable, namely the water sample is fully collected, the lifting rope is pulled up, and sampling of water at different depths is realized by replacing the fixed-length ropes with different lengths.

Description

Technical Field

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

[0002] With the rapid development of water conservancy projects, water quality testing has become an important part of water resource management. Water quality testing sampling devices are equipment specifically used to collect water samples.

[0003] Chinese Patent CN220136748U discloses a water quality testing and sampling device. The technical solution includes a barrel with an internal movable groove. A base plate is fixedly connected to the bottom of the barrel, and a water pumping device is mounted on the surface of the base plate. The water pumping device includes a cylinder, a piston, an upper valve, a lower valve, and a support rod. The cylinder is fixedly mounted on the surface of the base plate, and a water pumping trough is formed inside the cylinder. An inlet is located at the bottom of the water pumping trough, and a lower valve is fixedly mounted on the surface of the inlet. A support rod is located inside the water pumping trough, and an upper valve is fixedly connected to the bottom surface of the support rod. This invention, by setting up a water pumping device and a chain buckle, allows users to transport the barrel on water and select a suitable water area to hang a counterweight to stabilize the barrel for timed water pumping and testing. This achieves water sampling and testing from a distance, making it convenient for users to sample and test water quality, and the operation is very simple.

[0004] The water quality testing sampling devices described above and under existing technologies are usually simple glass containers for hand-held water sampling or buckets floating on the water surface with built-in pumping devices for water sampling. However, these sampling devices can only sample the surface water, while water quality testing in water conservancy projects often requires sampling water at a certain depth. There is a lack of corresponding structures that can sample deep water, which needs to be improved and optimized. Utility Model Content

[0005] The purpose of this invention is to provide a water quality testing and sampling device for water conservancy projects, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A water quality testing and sampling device for water conservancy projects includes a sampling cylinder, one end of which is fixedly connected to a water outlet pipe, two lugs are symmetrically fixedly connected to both sides of the sampling cylinder, a handle is fixedly inserted into the middle of the lugs, a lifting rope is fixedly attached to the middle of the handle, a counterweight is threadedly connected to the bottom end of the sampling cylinder, a cylinder cover is threadedly connected to one end of the sampling cylinder, a fixed-depth water inlet assembly is inserted into the middle of the cylinder cover, and a filter cup is fixedly connected to one end of the cylinder cover.

[0007] Preferably, a first sealing ring is fitted onto one end of the cylinder cover, a frustoconical hole is provided in the middle of the cylinder cover, and two sets of limiting blocks are symmetrically fixedly connected to the middle of the cylinder cover.

[0008] Preferably, the first sealing ring is disposed between the cylinder cap and the sampling cylinder.

[0009] Preferably, the fixed-depth water inlet assembly includes a sealing block, a spring, a fixed-length rope, and a float. The sealing block is inserted into a frustoconical hole, a spring is fixedly connected to one end of the sealing block, a fixed-length rope is fixedly attached to one end of the sealing block, and a float is fixedly attached to one end of the fixed-length rope.

[0010] Preferably, a second sealing ring is fitted into the middle of the sealing block.

[0011] Preferably, the float has scale lines on its outer side.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The water quality testing and sampling device for water conservancy projects proposed in this utility model mainly involves attaching a fixed-length rope of the required sampling depth to a sealing block and a float. The sealing block, under the tension of a spring, squeezes the sealing sampling cylinder. After they are thrown into the water, the counterweight pulls the sampling cylinder down to the required sampling depth. The fixed-length rope is straightened by the buoyancy of the float and the weight of the counterweight, and the spring is stretched, causing the sealing block to disengage from the frustum-shaped hole to the limit stop. The water sample flows into the sampling cylinder. When the scale line on the float stabilizes, the water sample is full, and the lifting rope can be pulled up. By changing the fixed-length rope of different lengths, sampling of water quality at different depths can be achieved. Attached Figure Description

[0014] Figure 1 A schematic diagram of a water quality testing and sampling device for water conservancy projects;

[0015] Figure 2 An exploded view of a partial structure of a water quality testing and sampling device for water conservancy projects;

[0016] Figure 3 A partial structural cross-sectional view of a water quality testing and sampling device for water conservancy projects;

[0017] Figure 4 for Figure 3 Enlarged diagram of part A in the middle.

[0018] In the diagram: 1. Sampling cylinder; 2. Water outlet pipe; 3. Ear block; 4. Handle; 401. Lifting rope; 5. Counterweight; 6. Cylinder cover; 601. First sealing ring; 602. Frustum-shaped hole; 603. Limiting block; 701. Sealing block; 702. Spring; 703. Fixed length rope; 704. Float; 705. Second sealing ring; 706. Scale line; 8. Filter cup. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please see Figures 1 to 4 This utility model provides the following two technical solutions:

[0021] Example 1: A water quality testing and sampling device for water conservancy projects includes a sampling cylinder 1, an outlet pipe 2 fixedly connected to one end of the sampling cylinder 1, lugs 3 symmetrically fixedly connected to both sides of the sampling cylinder 1, a handle 4 fixedly inserted into the middle of the lugs 3, a lifting rope 401 fixedly attached to the middle of the handle 4, a counterweight 5 threadedly connected to the bottom end of the sampling cylinder 1, a cylinder cover 6 threadedly connected to one end of the sampling cylinder 1, a fixed-depth water inlet assembly inserted into the middle of the cylinder cover 6, a filter cup 8 fixedly connected to one end of the cylinder cover 6; a first sealing ring 601 sleeved on one end of the cylinder cover 6, a frustoconical hole 602 provided in the middle of the cylinder cover 6, and two sets of limiting blocks 603 symmetrically fixedly connected in the middle of the cylinder cover 6; the first sealing ring 601 is located between the cylinder cover 6 and the sampling cylinder 1.

[0022] When in use, close the valve at one end of the outlet pipe 2, thread the counterweight 5 to the bottom of the sampling cylinder 1, thread the cylinder cover 6 to the sampling cylinder 1, the first sealing ring 601 between the cylinder cover 6 and the sampling cylinder 1 plays a sealing role, the frustum-shaped hole 602 at the upper end of the cylinder cover 6 is used for the water sample to enter, and the filter cup 8 is used to filter out larger impurities and debris in the water.

[0023] Example 2: Based on Example 1, the fixed-depth water inlet assembly includes a sealing block 701, a spring 702, a fixed-length rope 703, and a float 704. The sealing block 701 is inserted into the frustoconical hole 602. One end of the sealing block 701 is fixedly connected to the spring 702, and one end of the sealing block 701 is fixedly attached to the fixed-length rope 703. One end of the fixed-length rope 703 is fixedly attached to the float 704. A second sealing ring 705 is sleeved in the middle of the sealing block 701. The float 704 has a scale line 706 on its outer side.

[0024] During use, the sealing block 701, under the tension of the spring 702, presses against the frustoconical hole 602 to ensure that the water sample does not enter the sampling cylinder 1 during the descent to the required depth. The second sealing ring 705, fitted in the middle of the sealing block 701, is used to increase the sealing between the sealing block 701 and the frustoconical hole 602. One end of the fixed-length rope 703, corresponding to the required sampling depth, is tied to the sealing block 701, and the other end is tied to the lower end of the float 704. The lugs 3 fixedly connected to both sides of the sampling cylinder 1 are connected to... Handle 4, attach one end of the lifting rope 401 to handle 4, hold the other end of the lifting rope 401, and throw the sampling cylinder 1 and float 704 into the water. When the counterweight 5 causes the sampling cylinder 1 to fall to the required sampling depth, the fixed-length rope 703 is straightened. Under the buoyancy of the float 704 and the gravity of the counterweight 5, the fixed-length rope 703 pulls the sealing block 701 and stretches the spring 702, causing the sealing block 701 to move away from the frustum-shaped hole 602 and move to the limit stop 603 where it is pressed. At this time, the water sample is released from the frustum. Water flows into the sampling cylinder 1 through the orifice 602. As the sampling cylinder 1 is continuously filled with water, the weight of the counterweight 5, the sampling cylinder 1, and the water inside the sampling cylinder 1 continuously increases. To balance the gravity, the float 704 slowly moves downwards to increase buoyancy. When the scale line 706 on the float 704 remains stable on the water surface, it indicates that the sampling cylinder 1 is full. At this time, the lifting rope 401 is lifted to take the sampling cylinder 1 out of the water. When the sampling cylinder 1 is lifted, the sealing block 701, under the pulling action of the spring 702, squeezes the cone again. The orifice 602 ensures that the water sample in the sampling tube 1 is not contaminated by the upper water quality, thus ensuring the accuracy of the water depth sampling. After lifting the sampling tube 1, by holding the handle 4, the valve at one end of the outlet pipe 2 can be opened, and the water sample taken in the sampling tube 1 can be poured from the outlet pipe 2 into the collection bag or collection bottle for storage and subsequent water sample testing. When it is necessary to sample water quality at another depth next time, it is only necessary to replace the fixed length rope 703 corresponding to the water depth, thus realizing the function of sampling water quality at different depths.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A water quality testing and sampling device for water conservancy projects, comprising a sampling tube (1), one end of which is fixedly connected to a water outlet pipe (2), and two symmetrically fixedly connected ear blocks (3) on both sides of the sampling tube (1), a handle (4) fixedly inserted into the middle of the ear blocks (3), and a lifting rope (401) fixedly attached to the middle of the handle (4), characterized in that: The bottom end of the sampling tube (1) is threaded with a counterweight (5), and one end of the sampling tube (1) is threaded with a tube cover (6). A fixed depth water inlet assembly is inserted into the middle of the tube cover (6), and a filter cup (8) is fixedly connected to one end of the tube cover (6).

2. The water quality testing and sampling device for water conservancy projects according to claim 1, characterized in that: The first sealing ring (601) is sleeved on one end of the cylinder cover (6), and a frustum-shaped hole (602) is provided in the middle of the cylinder cover (6). Two sets of limiting blocks (603) are symmetrically fixedly connected in the middle of the cylinder cover (6).

3. The water quality testing and sampling device for water conservancy projects according to claim 2, characterized in that: The first sealing ring (601) is located between the cylinder cover (6) and the sampling cylinder (1).

4. The water quality testing and sampling device for water conservancy projects according to claim 1, characterized in that: The fixed-depth water inlet assembly includes a sealing block (701), a spring (702), a fixed-length rope (703), and a float (704). The sealing block (701) is inserted into a frustoconical hole (602). One end of the sealing block (701) is fixedly connected to the spring (702), and one end of the sealing block (701) is fixedly attached to the fixed-length rope (703). One end of the fixed-length rope (703) is fixedly attached to the float (704).

5. A water quality testing and sampling device for water conservancy projects according to claim 4, characterized in that: A second sealing ring (705) is fitted into the middle of the sealing block (701).

6. The water quality testing and sampling device for water conservancy projects according to claim 4, characterized in that: The float (704) has scale lines (706) on its outer side.

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