Underwater sampling device for marine ecological restoration

Abstract

The utility model relates to the technical field of marine underwater sampling devices, and discloses an underwater sampling device for marine ecological restoration, which comprises a sampling barrel put into water, a screw barrel is fixedly arranged at the upper end of the sampling barrel, a wake flow sleeve is in threaded connection with the screw barrel, and a water inlet is formed in the wake flow sleeve. A safety pin is fixedly arranged at the upper end of the wake flow sleeve, and a safety rope is connected to the safety pin. The water sampling device is simple in structure, convenient to sample, stable in sampling and good in isolation effect, water can be accurately taken from a water area with a specified depth, and different triggering depths can be adjusted by adjusting a pressure threshold value.

Description

Technical Field

[0001] The utility model relates to the technical field of marine underwater sampling devices, in particular to an underwater sampling device for marine ecological restoration. Background Art

[0002] Seawater sampling research can reflect the potential change trend of water quality in a system, which plays a vital role in marine ecological research. The current seawater sampling device has a complex structure, high cost, and is easy to pollute the seawater when it is transferred. Therefore, it is urgent to develop a seawater sampling device with simple structure, easy operation and low cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the above problems, an underwater sampling device for marine ecological restoration is provided, which solves the above problems.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] An underwater sampling device for marine ecological restoration comprises a sampling barrel put into water, a screw barrel is fixedly provided at the upper end of the sampling barrel, a wake sleeve is threadedly connected to the screw barrel, a safety pin is fixedly provided at the upper end of the wake sleeve, and a safety rope is connected to the safety pin;

[0006] An electronic pressure control valve is fixedly provided at the upper port of the spiral barrel through the wake sleeve. When the electronic pressure control valve drops to a specified depth, the pressure threshold is triggered to open the electronic pressure control valve, thereby connecting the middle hole cavity inside the sampling barrel to the outside. In addition, a second one-way valve connected to the middle hole cavity is fixedly provided on the side of the sampling barrel, a sealing piston is slidably provided in the middle hole cavity, and a reset spring for pushing the sealing piston upward is fixedly provided in the middle hole cavity, and a first one-way valve connected to the middle hole cavity is fixedly provided at the lower end of the sampling barrel. When it is necessary to sample water in a specified depth section, the threshold of the electronic pressure control valve is adjusted, compressed air is pressed into the middle hole cavity through the first one-way valve so that the reset spring is compressed, and then the second one-way valve is installed in place and a seal is formed. When the device drops to a specified humidity, the electronic pressure control valve is triggered to be turned on, so that the compressed air in the middle hole cavity is quickly discharged, and then the reset spring returns to its original state and pushes the sealing piston upward so that the sampling barrel absorbs water, completing the sampling.

[0007] Preferably, in order to increase the descending speed of the device, a weight sleeve is fixedly mounted on the outside of the sampling tube, which can effectively increase the descending speed of the device.

[0008] Preferably, in order to make the device more stable during descent, the counterweight sleeve is in the shape of a water drop, so that the device can descend and break through the water more smoothly.

[0009] Preferably, in order to improve the steady flow of water during the descent of the device, a plurality of vertical fins are provided at annular intervals on the outer end surface of the wake sleeve fixedly connected to the upper end of the sampling tube, so that the device is more stable during the descent.

[0010] Preferably, a threaded sleeve is provided at the lower end of the wake sleeve, and an internal threaded hole is provided at the upper end of the counterweight sleeve for threaded connection with the wake sleeve, so as to facilitate assembly of the counterweight sleeve.

[0011] Preferably, the counterweight sleeve is of split-type design, and the split surfaces are provided with clamping columns and insertion holes that fit in with each other.

[0012] The advantages and positive effects of the utility model are:

[0013] 1. Simple structure, convenient sampling, stable sampling and good isolation effect, and can accurately sample water in waters of specified depth, and different trigger depths can be adjusted by adjusting the pressure threshold.

[0014] 2. Rapid descent effectively improves sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model;

[0018] Figure 3 It is a structural schematic diagram of another embodiment of the utility model;

[0019] Figure 4 yes Figure 1 Schematic diagram of the internal structure of the sampling tube. DETAILED DESCRIPTION

[0020] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0021] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0022] like Figure 1-4As shown, the underwater sampling device for marine ecological restoration described in the utility model comprises a sampling tube 13 put into the water, a screw barrel 19 is fixedly provided at the upper end of the sampling tube 13, and a wake sleeve 12 is threadedly connected to the screw barrel 19, a safety pin 11 is fixedly provided at the upper end of the wake sleeve 12, and a safety rope 10 is connected to the safety pin 11;

[0023] An electronic pressure control valve 15 is fixedly provided at the upper end of the spiral barrel 19 so as to pass through the wake sleeve 12. When the electronic pressure control valve 15 drops to a specified depth, a pressure threshold is triggered to open the electronic pressure control valve 15, thereby allowing the middle hole cavity 17 located inside the sampling barrel 13 to communicate with the outside. In addition, a first one-way valve 18 connected to the middle hole cavity 17 is fixedly provided on the side of the sampling barrel 13. A sealing piston 21 is slidably provided in the middle hole cavity 17, and a return spring 22 is fixedly provided in the middle hole cavity 17 to push the sealing piston 21 upward, and a sealing piston 21 is fixedly provided at the lower end of the sampling barrel 13. A second one-way valve 14 connected to the middle hole cavity 17 is provided. When it is necessary to sample water at a specified depth, the threshold of the electronic pressure control valve 15 is adjusted, and compressed air is pressed into the middle hole cavity 17 through the first one-way valve 18 to compress the reset spring 22. Then the second one-way valve 14 is installed in place and forms a seal. When the device drops to a specified humidity, the electronic pressure control valve 15 is triggered to conduct, so that the compressed air in the middle hole cavity 17 is quickly discharged, and then the reset spring 22 returns to its original state and pushes the sealing piston 21 upward to allow the sampling tube 13 to absorb water, thereby completing the sampling.

[0024] Preferably, in order to increase the descending speed of the device, a weight sleeve 16 is fixedly mounted on the outside of the sampling tube 13, which can effectively increase the descending speed of the device.

[0025] Preferably, in order to make the device more stable during descent, the counterweight sleeve 16 is in the shape of a water drop, so that the device can descend and break through the water more smoothly.

[0026] Preferably, in order to improve the steady flow of water during the descent of the device, a plurality of vertical fins are provided at annular intervals on the outer end surface of the wake sleeve 12 fixedly connected to the upper end of the sampling tube 13, so that the device is more stable during the descent.

[0027] Preferably, a threaded sleeve is provided at the lower end of the wake sleeve 12 , and an internal threaded hole is provided at the upper end of the counterweight sleeve 16 for threaded connection with the wake sleeve 12 , so as to facilitate assembly of the counterweight sleeve 16 .

[0028] Preferably, the counterweight sleeve 16 is of split design, and the split surfaces are provided with clamping columns 23 and insertion holes that fit in with each other.

[0029] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. An underwater sampling device for marine ecological restoration, characterized in that: The invention comprises a sampling tube (13) put into water, a screw tube (19) is fixedly provided at the upper end of the sampling tube (13), a wake sleeve (12) is threadedly connected to the screw tube (19), a safety pin (11) is fixedly provided at the upper end of the wake sleeve (12), and a safety rope (10) is connected to the safety pin (11); An electronic pressure control valve (15) is fixedly provided at the upper end of the spiral barrel (19) through the wake sleeve (12). When the electronic pressure control valve (15) drops to a specified depth, a pressure threshold is triggered to open the electronic pressure control valve (15), thereby allowing the middle hole cavity (17) located inside the sampling barrel (13) to communicate with the outside. In addition, a first one-way valve (18) connected to the middle hole cavity (17) is fixedly provided on the side of the sampling barrel (13). A sealing piston (21) is slidably provided in the middle hole cavity (17), and a return spring (22) is fixedly provided in the middle hole cavity (17) for pushing the sealing piston (21) upward. A second one-way valve (14) connected to the middle hole cavity (17) is fixedly provided at the lower end. When it is necessary to sample water at a specified depth, the threshold of the electronic pressure control valve (15) is adjusted, and compressed air is pressed into the middle hole cavity (17) through the first one-way valve (18) so that the return spring (22) is compressed, and then the second one-way valve (14) is installed in place to form a seal. When the device drops to a specified humidity, the electronic pressure control valve (15) is triggered to conduct, so that the compressed air in the middle hole cavity (17) is quickly discharged, and then the return spring (22) returns to its original state and pushes the sealing piston (21) upward so that the sampling tube (13) absorbs water, completing the sampling.

2. The underwater sampling device for marine ecological restoration according to claim 1 is characterized in that: In order to increase the descending speed of the device, a weight sleeve (16) is fixedly mounted on the outside of the sampling tube (13), which can effectively increase the descending speed of the device.

3. The underwater sampling device for marine ecological restoration according to claim 2 is characterized in that: In order to make the device more stable during the descent process, the counterweight sleeve (16) is in the shape of a water drop, so that the device can descend and break through the water more smoothly.

4. The underwater sampling device for marine ecological restoration according to claim 3 is characterized by: In order to improve the steady flow of water during the descent of the device, a plurality of vertical fins are provided at annular intervals on the outer end surface of the wake sleeve (12) fixedly connected to the upper end of the sampling tube (13), so that the device is more stable during the descent.

5. The underwater sampling device for marine ecological restoration according to claim 4 is characterized in that: The lower end of the wake sleeve (12) is provided with a threaded sleeve, and the upper end of the counterweight sleeve (16) is provided with an internal threaded hole for threaded connection with the wake sleeve (12), so as to facilitate assembly of the counterweight sleeve (16).

6. The underwater sampling device for marine ecological restoration according to claim 5, characterized in that: The counterweight sleeve (16) is of split-type design, and a clamping column (23) and a plug hole that fit in and are inserted into each other are provided on the split surfaces.

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