Underground water quality surveying and sampling device

Abstract

The utility model relates to an underground water quality surveying and sampling device which comprises a sampling pipe, a conical pipe bottom fixedly connected to the bottom of the sampling pipe, a water inlet pipe fixedly connected to the bottom of the conical pipe bottom, a hollow screw-in valve element in threaded connection with the bottom end of the water inlet pipe, a valve ball arranged at the top of the screw-in valve element, and an elastic assembly abutting against the valve ball and arranged in the conical pipe bottom. The screw-in valve element is screwed in to push the valve ball to compress the elastic assembly to adjust the water inlet pressure. According to the underground water quality surveying and sampling device, the screwing-in valve element capable of screwing in and adjusting the elastic assembly is used for adjusting the water pressure resistance of the valve ball, so that a water sample can eject the valve ball open to enter the sampling pipe only when the target depth is reached in water, deep water sample collection is achieved, and the water quality surveying accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water quality survey sampling device, especially an underground water quality survey sampling device. BACKGROUND

[0002] The site underground water environment investigation is the process of determining whether the site underground water is polluted and the pollution degree and range by using the experimental investigation method. During the investigation, the monitoring well needs to be observed and sampled, the underground water of the concerned layer of the monitoring well is taken out by using the bailer or other samplers, and the water sample is placed in a suitable appliance to facilitate the technical personnel to carefully observe, monitor, describe and take photos of the physical and chemical properties such as the water sample nature, color, smell, temperature, dissolved oxygen and oxidation reduction potential.

[0003] However, the bailer is mostly used for the site underground water environment sampling, the sampling device based on the bailer form starts sampling when being placed at the water surface position, so that the water sample of the set depth cannot be collected, the surface water sample contacts the air to generate a relatively complex physicochemical reaction, and the actual water quality condition cannot be accurately judged. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of underground water quality survey sampling devices, to solve the sampling device based on the bailer form in existing when being placed at the water surface position starts sampling, so that the water sample of the set depth cannot be collected, the surface water sample contacts the air to generate a relatively complex physicochemical reaction, and the actual water quality condition cannot be accurately judged.

[0005] To solve the above problems, the utility model provides a kind of underground water quality survey sampling device, including sampling tube, the bottom of sampling tube is fixedly connected with conical tube bottom, the bottom of conical tube bottom is fixedly connected with water inlet pipe, the bottom end of water inlet pipe is threadedly connected with hollow spin valve core, the top of spin valve core is equipped with valve ball, conical tube bottom is equipped with the elastic component that valve ball is contacted, spin valve core spins and promotes valve ball to compress elastic component and adjusts water inlet pressure.

[0006] The underground water quality survey sampling device provided by the utility model also has the following technical features:

[0007] Further, the elastic component includes a push plate, a shaft and a spring, the shaft is fixedly connected to the push plate, the spring is sleeved on the shaft, the sampling tube is fixedly connected with a water-permeable plate at the connection with the conical tube bottom, the center of the water-permeable plate is provided with a center hole for the shaft to extend out, one end of the spring is in contact with the water-permeable plate, the other end of the spring is in contact with the push plate, and the push plate is in contact with the valve ball.

[0008] Further, the water inlet pipe is made of transparent material, and the outer shell of the water inlet pipe is provided with a scale line matched with the elastic component, and the scale line is aligned with the push plate.

[0009] Furthermore, a duckbill valve is fixedly connected to the top of the sampling tube, and an arc-shaped cavity is provided on the upper part of the duckbill valve. The arc-shaped cavity has multiple vent holes, and a connecting plate is fixedly connected to the top of the arc-shaped cavity.

[0010] Furthermore, a fin is fixedly connected to the bottom of the screw-in valve core.

[0011] Furthermore, the fin plate is provided with connection holes for hanging counterweights.

[0012] The present invention has the following beneficial effects: The groundwater quality survey and sampling device described in this application uses a rotary valve core with an adjustable elastic component to adjust the valve ball's resistance to water pressure, thereby ensuring that the water sample can only be obtained by pushing open the valve ball and entering the sampling tube when the target depth is reached in the water, thus realizing the collection of depth water samples and improving the accuracy of water quality survey. Attached Figure Description

[0013] Figure 1 This is a front view sectional isometric schematic diagram of the groundwater quality survey and sampling device according to an embodiment of the present invention;

[0014] Figure 2 This invention relates to a groundwater quality survey and sampling device. Figure 1 Enlarged view of node A in the middle;

[0015] Figure 3 This is an isometric schematic diagram of the groundwater quality survey and sampling device according to an embodiment of the present invention;

[0016] Figure 4 This invention relates to a groundwater quality survey and sampling device. Figure 3 Enlarged view of node B in the middle.

[0017] (1-Sampling tube, 2-Conical tube bottom, 3-Inlet pipe, 4-Screw valve core, 5-Valve ball, 6-Elastic component, 7-Permeable plate, 8-Scale line, 9-Duckbill valve, 10-Arch cavity, 11-Vent hole, 12-Connecting plate, 13-Fin plate, 14-Connecting hole, 61-Push plate, 62-Shaft, 63-Spring) Detailed Implementation

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0019] like Figures 1 to 4In the embodiment of the groundwater quality survey and sampling device of this utility model shown, the groundwater quality survey and sampling device includes a sampling tube 1, a conical tube bottom 2 fixedly connected to the bottom of the sampling tube 1, a water inlet pipe 3 fixedly connected to the bottom of the conical tube bottom 2, a hollow screw valve core 4 threadedly connected to the bottom end of the water inlet pipe 3, a valve ball 5 provided at the top of the screw valve core 4, and an elastic component 6 that abuts against the valve ball 5 provided inside the conical tube bottom 2. The screw valve core 4 screws in to push the valve ball 5 to compress the elastic component 6 to adjust the water inlet pressure.

[0020] Specifically, before sampling, the valve core 4 is adjusted according to the desired sampling depth. The valve core 4 compresses the elastic component 6, increasing its deformation pressure. This requires greater water pressure to push the valve ball 5, allowing the water sample to enter the sampling tube 1 and thus obtain a deeper sample. During sampling, the inlet pipe 3 at the bottom of the sampling tube 1 is lowered into the water. When the inlet pipe 3 reaches the target depth, and the water pressure exceeds the pushing force of the elastic component 6 on the valve ball 5, water flows from the hollow cavity of the valve core 4, pushing open the valve ball 5 and entering the sampling tube 1. After sampling is completed, the sampling tube 1 is lifted. When the sampling tube 1 moves upward, the thrust of the elastic component 6 is greater than the water pressure. At this time, the valve ball 5, under the action of the elastic component 6, closes the hollow cavity of the screw-in valve core 4 to prevent the water sample from leaking out of the screw-in valve core 4. After sampling is completed, a conduit with a push rod is inserted into the screw-in valve core 4 to push the valve ball 5 so that the water sample flows into the sealing bottle through the conduit. This device uses the different pressures of the elastic component 6 under different compression moduli to adjust the water pressure pushing the valve ball 5, thereby achieving the collection of water samples at the target depth.

[0021] In one embodiment of this application, preferably, the elastic component 6 includes a push plate 61, a shaft 62, and a spring 63. The shaft 62 is fixedly connected to the push plate 61, and the spring 63 is sleeved on the shaft 62. A permeable plate 7 is fixedly connected at the connection between the sampling tube 1 and the bottom of the tapered tube 2. The permeable plate 7 has a central hole (not shown in the figure) for the shaft 62 to extend out. One end of the spring 63 abuts against the permeable plate 7, and the other end of the spring 63 abuts against the push plate 61. The push plate 61 abuts against the valve ball 5 and is used to push the valve ball 5 to resist water pressure. When the valve core 4 is screwed in to push the valve ball 5 to squeeze the push plate 61 and the spring 63, the elastic force of the spring 63 pushing the valve ball 5 will increase, requiring greater water pressure to open the valve ball 5 and allow water to enter the sampling tube 1, thereby obtaining a deeper water sample. The shaft 62 extends out and slides in the central hole to prevent the spring 63 and the push plate 61 from deviating from the pressure center line.

[0022] In one embodiment of this application, preferably, the water inlet pipe 3 is made of transparent material, and the outer shell of the water inlet pipe 3 is provided with scale lines 8 that are adapted to the elastic component 6. The scale lines 8 are aligned with the push plate 61 and are used to observe the pressure or water depth corresponding to the compression of the spring 63 during adjustment.

[0023] In one embodiment of this application, preferably, a duckbill valve 9 is fixedly connected to the top of the sampling tube 1. The upper part of the duckbill valve 9 is also provided with an arc cavity 10. The arc cavity 10 is provided with a plurality of vent holes 11. A connecting plate 12 is fixedly connected to the top of the arc cavity 10. The duckbill valve 9 is used to discharge the air in the sampling tube 1 from the top of the sampling tube 1 when water enters the sampling tube 1, so as to prevent the air from being compressed and blocking the water sample from entering the sampling tube 1, and at the same time prevent water from entering the sampling tube 1 from the top of the sampling tube 1.

[0024] In one embodiment of this application, preferably, a fin plate 13 is fixedly connected to the bottom of the screw-in valve core 4 to facilitate the screw-in or screw-out of the screw-in valve core 4.

[0025] In one embodiment of this application, preferably, the fin plate 13 is provided with a connection hole 14 for hanging a counterweight (existing technology, not the technical solution of this application, not shown in the figure) for hanging the counterweight. When the hollow sampling tube 1 enters the water, it will have buoyancy. Increasing the bottom counterweight can prevent the sampling tube 1 from failing to reach the target depth and prevent the sampling tube 1 from tilting.

[0026] In summary, the groundwater quality survey and sampling device in the above embodiments of this utility model specifically involves screwing in the valve core 4 to align the push plate 61 with the scale line 8 corresponding to the target depth, hanging the counterweight on the connecting hole 14 of the fin plate 13, connecting the lifting rope to the connecting plate 12 at the top of the arc cavity 10, and lowering the sampling tube 1 into the monitoring well. As the sampling tube 1 enters the water surface, the water pressure gradually increases with depth. When the target depth is reached, the water pressure exceeds the elastic force of the spring 63 and the push plate 61 pushing the valve ball 5, causing the water sample to be pushed out from the valve core 4. The valve ball 5 enters the sampling tube 1, and the air in the sampling tube 1 is discharged through the duckbill valve 9. After sampling is completed, the sampling tube 1 is lifted. At this time, the elastic force of the spring 63 is greater than the water pressure, and the valve ball 5 is blocked again at the top of the screw-in valve core 4 to prevent water leakage. When draining water, a guide tube with a push rod is inserted into the screw-in valve core 4 to push the valve ball 5 so that the water sample flows into the sealing bottle through the guide tube. This device uses the screw-in and screw-out of the screw-in valve core 4 to adjust the elastic force of the spring 63 touching the valve ball 5, so as to realize the sealing or opening of the water inlet channel of the screw-in valve core 4 at different depths, so as to achieve the collection of depth water samples.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A groundwater quality survey and sampling device, characterized in that, The device includes a sampling tube, a conical tube bottom fixedly connected to the bottom of the sampling tube, an inlet pipe fixedly connected to the bottom of the conical tube bottom, a hollow rotary valve core threaded to the bottom end of the inlet pipe, a valve ball at the top of the rotary valve core, and an elastic component that abuts against the valve ball inside the conical tube bottom. The rotary valve core rotates inward to push the valve ball to compress the elastic component and adjust the inlet water pressure.

2. The groundwater quality survey and sampling device according to claim 1, characterized in that: The elastic component includes a push plate, a shaft, and a spring. The shaft is fixedly connected to the push plate, and the spring is sleeved on the shaft. A permeable plate is fixedly connected to the connection between the sampling tube and the bottom of the tapered tube. The permeable plate has a central hole for the shaft to extend out. One end of the spring abuts against the permeable plate, and the other end of the spring abuts against the push plate. The push plate abuts against the valve ball.

3. The groundwater quality survey and sampling device according to claim 2, characterized in that: The water inlet pipe is made of transparent material, and the outer shell of the water inlet pipe is provided with scale lines that are adapted to the elastic component, and the scale lines are aligned with the push plate.

4. The groundwater quality survey and sampling device according to claim 1, characterized in that: The top of the sampling tube is fixedly connected to a duckbill valve, and the upper part of the duckbill valve is also provided with an arc cavity. The arc cavity is provided with multiple vent holes, and the top of the arc cavity is fixedly connected to a connecting plate.

5. The groundwater quality survey and sampling device according to claim 1, characterized in that: The bottom of the rotary valve core is fixedly connected to a fin.

6. The groundwater quality survey and sampling device according to claim 5, characterized in that: The fin plate has connection holes for hanging counterweights.

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