Remote water quality sampling device with controllable water depth

Abstract

The invention discloses a remote water quality sampling device with controllable water depth, and belongs to the technical field of water resource sampling. Comprising an outer pipe, a plurality of water inlet hole sets are vertically and evenly distributed in the outer pipe, each water inlet hole set comprises four water inlet through holes which are annularly and evenly distributed, the four water inlet through holes all penetrate through the wall thickness of the outer pipe, an inner rod is arranged in the middle of the outer pipe, and plugging assemblies matched with the water inlet hole sets in number and position are arranged on the inner rod. The plugging assembly comprises an upper mounting plate and a lower mounting plate, the middle of the upper mounting plate and the middle of the lower mounting plate are detachably connected to the inner rod, the edge of the upper mounting plate and the edge of the lower mounting plate are arranged close to the inner wall of the outer pipe, and an annular plugging air bag is arranged between the upper mounting plate and the lower mounting plate. The blocking air bag is arranged on the inner rod in a sleeving mode. The technical scheme is used for remotely performing water quality sampling operation on a sampling area far away from the shore, and the sampling efficiency and safety are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water resource sampling, and in particular relates to a remote water quality sampling device with controllable water depth. Background Art

[0002] Hydrological and water resource surveys are key links in many fields such as environmental protection, resource management, and scientific research. As an important part of hydrological surveys, water source sampling aims to obtain representative samples of water bodies for subsequent physical, chemical, and biological analyses. The accuracy and reliability of water source sampling are directly related to the accuracy of hydrological research and environmental monitoring.

[0003] For example, when conducting water quality analysis on large lakes and other water bodies, it is usually necessary to conduct long-term testing and analysis of the water quality of the same water body, and then conduct several water quality sampling operations in the water body. When existing staff conduct sampling, if the sampling area is far away from the shore, they usually use manual handheld sampling devices and take a small boat to enter the sampling area, and then conduct sampling operations. This sampling method is relatively cumbersome and has low sampling efficiency. In addition, each sampling requires the operator to personally enter the sampling area far from the shore, which will bring unnecessary safety hazards to the operator. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a remote water quality sampling device with controllable water depth, which is used to remotely perform water quality sampling operations in sampling areas far from the shore, thereby improving sampling efficiency and safety.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a remote water quality sampling device with controllable water depth, comprising an outer tube, wherein a plurality of water inlet hole groups are evenly distributed vertically on the outer tube, wherein the water inlet hole group comprises four annular evenly distributed water inlet through holes, wherein the four water inlet through holes are all arranged to penetrate the wall thickness of the outer tube, wherein an inner rod is provided at the middle of the outer tube, wherein a plugging assembly matching the number and position of the water inlet hole groups is provided on the inner rod, wherein the plugging assembly comprises an upper mounting plate and a lower mounting plate, wherein the middle portions of the upper mounting plate and the lower mounting plate are both detachably connected to the inner rod, and the edges of the upper mounting plate and the lower mounting plate are close to the outer tube. The inner wall is arranged, an annular blocking airbag is arranged between the upper mounting plate and the lower mounting plate, the blocking airbag is sleeved and arranged on the inner rod, a connecting pipe is arranged on the blocking airbag, one end of the connecting pipe is connected with the interior of the annular airbag, an installation cavity is arranged at the upper end of the outer tube, a multi-way valve is arranged in the installation cavity, the other ends of several connecting pipes are respectively connected with the output ends of the multi-way valve, an air pump is arranged on the input end of the multi-way valve, the installation cavity is arranged above the liquid level, a connecting head is arranged at the lower end of the outer tube, and a pumping assembly is arranged on the connecting head.

[0007] Furthermore, a fixing ring is provided at the lower end of the outer tube, the inner side surface of the fixing ring is fixed on the outer tube, and a plurality of inserting rods are provided on the fixing ring, one end of the inserting rods is connected to the fixing ring.

[0008] Furthermore, one end of the installation cavity is fixed on the outer tube, and a solar cell assembly is provided on the other end of the installation cavity. The solar cell assembly is used to provide the multi-way valve and the air pump with electrical energy required for their operation.

[0009] Furthermore, the pumping assembly includes a pumping pipe, one end of which is connected to a connecting head, and the other end of which is provided with a water pump, and the water pump is arranged on the lake shore.

[0010] Furthermore, a conical bucket is provided between the connecting head and the end of the outer tube, the large diameter end of the conical bucket is fixed on the outer tube, and the small diameter end of the conical bucket is connected to the connecting head.

[0011] Furthermore, an outer surface of the inner rod is provided with an outer thread, and a middle portion of the upper mounting plate and the lower mounting plate is provided with an inner thread, and the upper mounting plate and the lower mounting plate are threadedly connected to the inner rod.

[0012] Furthermore, a fixing block is provided on the inner side surface of the lower end of the outer tube, the edge of the fixing block is fixed on the inner side surface of the outer tube, and the end of the inner rod is threadedly connected to the fixing block.

[0013] Furthermore, an air injection pipe is provided on an output end of the multi-way valve.

[0014] Furthermore, a sliding column is provided between the outer side surface of the blocking airbag and the water inlet hole, one end of the sliding column is slidably connected to the water inlet hole, the other end of the sliding column is provided with an end plate, the end plate is fixed on the sliding column, a spring is provided between the end plate and the inner wall of the outer tube, one end of the spring is fixed to the end plate, the other end of the spring is fixed to the inner wall of the outer tube, the spring is sleeved on the sliding column, a sealing block is provided on the end of the sliding column located outside the water inlet hole, the sealing block is fixed on the sliding column, an inclined water pumping hole is provided on the sliding column, the lower end of the water pumping hole is arranged close to the inner wall of the outer tube, a dredging guide wire is provided in the water pumping hole, and one end of the dredging guide wire is fixed to the side wall of the upper mounting plate.

[0015] Furthermore, the pumping assembly includes a remote-controlled sampling boat, which is provided with a water pump and a camera assembly. The connecting head is provided with a water diversion pipe, one end of the water diversion pipe is connected to the connecting head, and the other end of the water diversion pipe is located above the lake surface. The camera assembly is used for staff to observe the positions of the water pump and the water diversion pipe, which facilitates the docking of the pumping end of the water pump and the end of the water diversion pipe.

[0016] The beneficial effects of the present invention are:

[0017] (1) This technical solution enables staff on shore to conduct remote water quality sampling at different depths, thus simplifying the water quality sampling process. At the same time, during the sampling process at different depths, it can also prevent the pumping holes from being blocked by impurities in the water, thereby improving the sampling effect;

[0018] (2) The technical solution has a simple structure and an ingenious design, and the device does not contain any electronic components in the water portion, which means that the device will not be damaged due to immersion, thereby extending the service life of the device.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 It is a three-dimensional schematic diagram of the remote water quality sampling device of the present invention;

[0022] Figure 2 It is an internal cross-sectional view of the remote water quality sampling device of the present invention;

[0023] Figure 3 It is a three-dimensional schematic diagram of the outer tube in the remote water quality sampling device of the present invention;

[0024] Figure 4 It is a three-dimensional schematic diagram of the arrangement of the internal blocking component in the remote water quality sampling device of the present invention;

[0025] Figure 5 It is a three-dimensional schematic diagram of a single plugging component in the remote water quality sampling device of the present invention;

[0026] Figure 6 For the present invention Figure 2 A local enlarged schematic diagram of point A in the middle.

[0027] The following are marked in the accompanying drawings:

[0028] 1. Outer tube; 2. Water inlet hole; 3. Fixing ring; 4. Insert rod; 5. Conical bucket; 6. Connector; 7. Multi-way valve; 8. Gas pipe; 9. Solar cell module; 10. Gas injection pipe; 11. Fixing block; 12. Inner rod; 13. Upper mounting plate; 14. Lower mounting plate; 15. Positioning hole; 16. Sealing airbag; 17. End plate; 18. Sliding column; 19. Spring; 20. Sealing block; 21. Connecting pipe; 22. Mounting cavity; 23. Pumping hole; 24. Clearing guide wire. DETAILED DESCRIPTION

[0029] like Figure 1 to Figure 6 As shown, a remote water quality sampling device with controllable water depth of the present invention comprises an outer tube 1, and a plurality of water inlet hole groups are evenly distributed vertically on the outer tube 1, and the water inlet hole group comprises four annularly evenly distributed water inlet through holes 2. Of course, the number of water inlet through holes 2 can be set according to actual conditions, and the four water inlet through holes 2 all penetrate the wall thickness of the outer tube 1, and an inner rod 12 is provided in the middle of the outer tube 1, and one end of the inner rod 12 is connected to the inner side surface of the lower end of the outer tube 1, and a plugging component matching the number and position of the water inlet hole groups is provided on the inner rod 12, and the plugging component comprises an upper mounting plate 13 and a lower mounting plate 14 arranged in an annular manner, and the middle parts of the upper mounting plate 13 and the lower mounting plate 14 can be detachably connected to the inner rod 12, and the edges of the upper mounting plate 13 and the lower mounting plate 14 are arranged close to the inner wall of the outer tube 1, so as to leave a gap for the internal water to flow downward, and the upper mounting plate 13 and the lower mounting plate 14 are provided. An annular blocking airbag 16 is provided between the upper and lower mounting plates 13 and 14, and the blocking airbag 16 is sleeved on the inner rod 12. A connecting pipe 21 is provided on the blocking airbag 16, and one end of the connecting pipe 21 is connected to the interior of the annular airbag. An installation cavity 22 is provided at the upper end of the outer tube 1, and a multi-way valve 7 (one input end, multiple output ends, and the on and off of the multiple output ends can be controlled separately) is provided in the installation cavity 22. The other ends of the several connecting pipes 21 pass through the positioning holes 15 provided on the upper mounting plate 13 and the lower mounting plate 14, and are respectively connected to the output ends of the multi-way valve 7. An air pump is provided on the input end of the multi-way valve 7, and the air pump is connected to the input end of the multi-way valve 7 through an air supply pipe 8. The installation cavity 22 is arranged above the liquid level, and the end of the installation cavity 22 should be sealed to ensure the closed environment inside the outer tube 1. A connector 6 is provided at the lower end of the outer tube 1, and a pumping assembly is provided on the connector 6.

[0030] The working principle of the above technical solution is:

[0031] First, according to the water depth of the lake or other waters, the length of the outer tube 1 and the spacing of the stratified sampling are confirmed, and then the water inlet through hole 2 at the corresponding height is set according to the spacing of the stratified sampling. Then, according to the position of the water inlet through hole 2, the upper mounting plate 13, the lower mounting plate 14, the blocking airbag 16 and the connecting pipe 21 at the corresponding position are installed on the inner rod 12, and then the inner rod 12 and the blocking assembly arranged thereon are plugged into the inner part of the outer tube 1 for assembly. After the assembly is completed, the construction personnel can fix the lower end of the outer tube 1 on the lake bed at the designated position.

[0032] When sampling is required, the staff first sends a command to the multi-way valve 7 to close the multi-way valve 7 and the output end of the connecting tube 21 at the depth where sampling is required, and open the connecting ends at other positions. Then the air pump is controlled to inject gas into the connecting tube 21, and the blocking airbags 16 at other depths are expanded. Under the limiting action of the upper mounting plate 13 and the lower mounting plate 14, the blocking airbag 16 can only expand in the horizontal direction, thereby blocking the water inlet hole 2. Finally, it is only necessary to pump the inside of the outer tube 1 through the pumping assembly to allow the water at the specified depth to enter the inside of the outer tube 1 from the water inlet hole 2, and finally be pumped out by the pumping assembly. It should be noted that when sampling by suction, the water sample in the front part is not used because it is the water stored in the outer tube 1. The water sample in the back part is the water sample pumped at the specified depth.

[0033] It should also be noted that the existing technology for remote control of air pumps, valves and other components is industrial remote control, that is, through computers, mobile phones and other remote control devices, the control instructions are transmitted to the near-end controller (such as PLC) via the communication network, and the PLC converts the instructions into machine language instructions to realize the control of the equipment. I will not go into too much detail here.

[0034] In one feasible manner, a fixing ring 3 is provided at the lower end of the outer tube 1, the inner side surface of the fixing ring 3 is fixed to the outer tube 1, a plurality of plug rods 4 are provided on the fixing ring 3, one end of the plug rod 4 is connected to the fixing ring 3, and the provision of the plug rod 4 facilitates fixing the device on the lake bed of the lake, thereby improving the overall stability.

[0035] In one feasible manner, one end of the mounting cavity 22 is fixed on the outer tube 1, and a solar cell assembly 9 is provided on the other end of the mounting cavity 22. The solar cell assembly 9 is used to provide the multi-way valve 7 and the air pump with the electrical energy required for their operation. It should be noted that the specific structure and principle of the solar cell assembly 9 for power supply are mature existing technologies and will not be elaborated on herein. That is, through the provision of the solar cell assembly 9, electrical energy can be stably provided to the air pump and the multi-way valve 7 to facilitate the normal operation of the control assembly. At the same time, this method eliminates the need to pull the electrical wire box and air pipe from the shore to the device, which can greatly simplify the structure and installation difficulty of the device.

[0036] In one feasible method, the pumping assembly includes a pumping pipe, one end of which is connected to the connector 6, and the other end of which is provided with a water pump, which is set on the lake shore. When sampling is required, the water pump can be controlled to pump water samples at a designated location to the shore, that is, the staff can complete sampling work at different depths on the shore.

[0037] In one feasible manner, a conical bucket 5 is provided between the connecting head 6 and the end of the outer tube 1, the large diameter end of the conical bucket 5 is fixed on the outer tube 1, and the small diameter end of the conical bucket 5 is connected to the connecting head 6. The setting of the conical bucket 5 facilitates the discharge of water entering the outer tube 1, avoiding the problem of residual accumulation of water in the outer tube 1, which may cause the water sample to be contaminated during sampling.

[0038] In one practicable manner, an outer thread is provided on the outer surface of the inner rod 12, an inner thread is provided in the middle of the upper mounting plate 13 and the lower mounting plate 14, the upper mounting plate 13 and the lower mounting plate 14 are threadedly connected to the inner rod 12, a fixing block 11 is provided on the inner side surface of the lower end of the outer tube 1, the edge of the fixing block 11 is fixed on the inner side surface of the outer tube 1, and the end of the inner rod 12 is threadedly connected to the fixing block 11. Through the threaded connection, the inner rod 12 and the outer tube 1, as well as the plugging assembly and the inner rod 12 can be connected by assembly and assembly, that is, the positions of the upper mounting ring and the lower mounting ring on the inner rod 12 can be changed according to the different sampling depth spacing settings, thereby changing the position of the plugging assembly to adapt to different sampling depths.

[0039] In one feasible manner, an air injection pipe 10 is provided on an output end of the multi-way valve 7. The provision of the air injection pipe 10 facilitates the intake of air into the outer tube 1 when all the water inlet holes 2 are blocked, thereby facilitating the water pump to suck out all the water samples in the inner tube. If air is not injected, the water pump will have difficulty in suction due to the closed interior of the outer tube 1.

[0040] In an operative manner, a sliding column 18 is provided between the outer side of the blocking airbag 16 and the water inlet hole 2, one end of the sliding column 18 is slidably connected to the water inlet hole 2, and the other end of the sliding column 18 is provided with an end plate 17 to increase the contact area. The end plate 17 is fixed to the sliding column 18, and a spring 19 is provided between the end plate 17 and the inner wall of the outer tube 1, one end of the spring 19 is fixed to the end plate 17, and the other end of the spring 19 is fixed to the inner wall of the outer tube 1, and the spring 19 is sleeved on the sliding column 18. On the top, a sealing block 20 is provided on one end of the sliding column 18 located outside the water inlet hole 2. The sealing block 20 is made of rubber. The sealing block 20 is fixed on the sliding column 18. The sliding column 18 is provided with an inclined water pumping hole 23. The lower end of the water pumping hole 23 is arranged close to the inner wall of the outer tube 1. A dredging guide wire 24 is provided in the water pumping hole 23. One end of the dredging guide wire 24 is fixed on the side wall of the upper mounting plate 13. It is not difficult to understand that the material of the dredging guide wire 24 is relatively soft and can be deformed. The diameter can be one third of the water pumping hole 23.

[0041] The working principle of the above technical solution is:

[0042] Under normal conditions, under the action of the spring 19, the sealing block 20 is squeezed onto the outer wall of the outer tube 1, thereby sealing the water inlet hole 2 to prevent water from entering the inner part of the outer tube 1. When sampling is required, it is only necessary to control the expansion of the blocking airbag 16 at the sampling depth, thereby pushing the sliding column 18 outward, and pushing the lower end of the water pumping hole 23 out of the outer tube 1, thereby connecting with the external water, and then realizing suction sampling. After the sampling is completed, the blocking airbag 16 is reset, the spring 19 is reset, and then the sealing block 20 re-blocks the water inlet hole 2; the advantage of this arrangement is that water pumping The hole 23 will not be blocked by moss or floating impurities in the water, because the pumping hole 23 is normally located inside the outer tube 1 and does not contact the external water. At the same time, the water inlet end of the pumping hole 23 is set downward. When the water is inlet, it will reduce the floating objects in the water from falling into the pumping hole 23, thereby further reducing the probability of blockage. That is, compared with the method of directly pumping water through the water inlet through hole 2 (contacting with water and being blocked by impurities such as floating objects and moss), this method is not easy to be blocked, and only one blocking airbag 16 needs to be controlled to work during pumping, and the control method is simpler. At the same time, the setting of the dredging guide wire 24 can dredge the pumping hole 23 after pumping water, that is, when the sliding column 18 moves outward, the dredging guide wire 24 moves up in the pumping hole 23, and when the sliding column 18 retracts, the dredging guide wire 24 moves down in the pumping hole to push out and dredge the blockage that may exist in it.

[0043] In one feasible method, the pumping assembly includes a remote-controlled sampling boat, which is provided with a water pump and a camera assembly, a water diversion pipe is provided on the connector 6, one end of the water diversion pipe is connected to the connector 6, and the other end of the water diversion pipe is located above the lake surface. The camera assembly is used for the staff to observe the position of the water pump and the water diversion pipe, so as to facilitate the docking of the pumping end of the water pump and the end of the water diversion pipe. This method does not require pulling the pumping pipe to the shore, but only requires controlling the remote-controlled boat to move to the device, and then aligning the pumping end of the water pump and the water diversion pipe to achieve the pumping work. This method makes the structure of the device simpler and more suitable for sampling work in waters far away from the shore. It should be noted that the docking of the pumping end of the water pump and the water diversion pipe is a prior art, and those skilled in the art can design and solve it according to the prior art, and no further elaboration will be made here.

[0044] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A remote water quality sampling device with controllable water depth, characterized in that: The invention comprises an outer tube (1), wherein a plurality of water inlet hole groups are evenly distributed vertically on the outer tube (1), wherein the water inlet hole group comprises four annularly evenly distributed water inlet through holes (2), wherein the four water inlet through holes (2) are all arranged to penetrate the wall thickness of the outer tube (1), wherein an inner rod (12) is arranged in the middle of the outer tube (1), wherein a plugging assembly matching the number and position of the water inlet hole groups is arranged on the inner rod (12), wherein the plugging assembly comprises an upper mounting plate (13) and a lower mounting plate (14), wherein the middle portions of the upper mounting plate (13) and the lower mounting plate (14) are both detachably connected to the inner rod (12), and the edges of the upper mounting plate (13) and the lower mounting plate (14) are arranged close to the inner wall of the outer tube (1), and wherein ... ) and a lower mounting plate (14), an annular blocking airbag (16) is provided between the inner rod (12), the blocking airbag (16) is sleeved and arranged on the inner rod (12), a connecting pipe (21) is provided on the blocking airbag (16), one end of the connecting pipe (21) is connected to the interior of the annular airbag, an installation cavity (22) is provided at the upper end of the outer tube (1), a multi-way valve (7) is provided in the installation cavity (22), the other ends of several connecting pipes (21) are respectively connected to the output ends of the multi-way valve (7), an air pump is provided on the input end of the multi-way valve (7), the installation cavity (22) is arranged above the liquid level, a connecting head (6) is provided at the lower end of the outer tube (1), and a pumping assembly is provided on the connecting head (6).

2. A remote water quality sampling device with controllable water depth according to claim 1, characterized in that: A fixing ring (3) is provided at the lower end of the outer tube (1), the inner side surface of the fixing ring (3) is fixed to the outer tube (1), and a plurality of insertion rods (4) are provided on the fixing ring (3), one end of the insertion rods (4) is connected to the fixing ring (3).

3. A remote water quality sampling device with controllable water depth according to claim 1, characterized in that: One end of the installation cavity (22) is fixed on the outer tube (1), and the other end of the installation cavity (22) is provided with a solar cell assembly (9), and the solar cell assembly (9) is used to provide the multi-way valve (7) and the air pump with electrical energy required for operation.

4. A remote water quality sampling device with controllable water depth according to claim 1, characterized in that: The pumping assembly comprises a pumping pipe, one end of which is connected to a connector (6), and the other end of which is provided with a water pump, which is arranged on the lake shore.

5. A remote water quality sampling device with controllable water depth according to claim 1, characterized in that: A conical bucket (5) is provided between the connecting head (6) and the end of the outer tube (1); the large diameter end of the conical bucket (5) is fixed on the outer tube (1), and the small diameter end of the conical bucket (5) is connected to the connecting head (6).

6. A remote water quality sampling device with controllable water depth according to claim 1, characterized in that: The outer surface of the inner rod (12) is provided with an external thread, and the middle parts of the upper mounting plate (13) and the lower mounting plate (14) are provided with an internal thread. The upper mounting plate (13) and the lower mounting plate (14) are threadedly connected to the inner rod (12).

7. The remote water quality sampling device with controllable water depth according to claim 1, characterized in that: A fixing block (11) is provided on the inner side surface of the lower end of the outer tube (1), the edge of the fixing block (11) is fixed on the inner side surface of the outer tube (1), and the end of the inner rod (12) is threadedly connected to the fixing block (11).

8. The remote water quality sampling device with controllable water depth according to claim 1, characterized in that: An air injection pipe (10) is provided on an output end of the multi-way valve (7).

9. The remote water quality sampling device with controllable water depth according to claim 1, characterized in that: A sliding column (18) is provided between the outer side surface of the blocking airbag (16) and the water inlet through hole (2), one end of the sliding column (18) is slidably connected to the water inlet through hole (2), the other end of the sliding column (18) is provided with an end plate (17), the end plate (17) is fixed to the sliding column (18), a spring (19) is provided between the end plate (17) and the inner wall of the outer tube (1), one end of the spring (19) is fixed to the end plate (17), and the other end of the spring (19) is fixed to the inner wall of the outer tube (1). The spring (19) is sleeved on the sliding column (18), and a sealing block (20) is provided on one end of the sliding column (18) located outside the water inlet hole (2). The sealing block (20) is fixed on the sliding column (18). The sliding column (18) is provided with an inclined water pumping hole (23), and the lower end of the water pumping hole (23) is arranged close to the inner wall of the outer tube (1). A dredging guide wire (24) is provided in the water pumping hole (23), and one end of the dredging guide wire (24) is fixed to the side wall of the upper mounting plate (13).

10. The remote water quality sampling device with controllable water depth according to claim 1, characterized in that: The pumping assembly comprises a remote-controlled sampling boat, on which a water pump and a camera assembly are arranged. A water diversion pipe is arranged on the connector (6), one end of the water diversion pipe is connected to the connector (6), and the other end of the water diversion pipe is located above the lake surface. The camera assembly is used for staff to observe the positions of the water pump and the water diversion pipe, and guide the pumping end of the water pump to connect with the end of the water diversion pipe.

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