An environmentally friendly groundwater pollution sampling device

Abstract

The present application discloses an environmentally friendly groundwater pollution sampling device, which belongs to the field of groundwater sampling technology, including an extension tube, a plugging assembly fixed at equal intervals on the outside of the extension tube along its height direction, and three groups of sampling tank limit assemblies fixed at equal intervals on the outside of the extension tube between two adjacent plugging assemblies along its length direction, wherein each group of sampling tank limit assemblies is formed by a combination of clamping rings fixed at equal intervals along the circumferential direction of the extension tube, and a sampling tank is placed on the inner side of the clamping ring, and a sampling tank opening and closing mechanism is rotatably connected above each group of sampling tank limit assemblies. The present application forms an independent sampling area between the two adjacent plugging assemblies through the mutual cooperation between the two adjacent plugging assemblies, thereby preventing the water layers at the upper and lower depths from mixing with each other during the sampling process, and at the same time, the sampling tanks in the three groups of sampling tank limit assemblies arranged between the two adjacent plugging assemblies improve the diversity of groundwater sampling.

Description

Technical Field

[0001] The present application relates to the field of groundwater sampling technology, and in particular to an environmentally friendly groundwater pollution sampling device. Background Art

[0002] Groundwater pollution monitoring refers to the monitoring work carried out to monitor and measure the types, concentrations and changing trends of harmful substances in groundwater, evaluate and grasp the groundwater pollution status, and understand the groundwater quality status and pollution development trends. During the groundwater monitoring process, it is necessary to sample the groundwater and then test the sampled samples to evaluate and investigate the current status of the groundwater.

[0003] In the prior art, such as the one shown in authorization announcement No. CN118624295B, there is a groundwater sampling device of different depths for groundwater investigation, in which the sampling device is placed into the monitoring well, and several water depths are selected, so that the sampling device is sunk to the selected depth positions in turn, and then the sampling tubes corresponding to the different depths are opened in turn according to the change in height to sample the groundwater at different depths. However, in this process, since the selected depths are in a state of interconnection, when sampling the groundwater at different depths, it is easy to cause mixing between the groundwater at different depths, resulting in inaccuracy in later detection. At the same time, the diversity of sampling cannot be improved between two adjacent selected depths. Therefore, the present application provides an environmentally friendly groundwater pollution sampling device. Summary of the Invention

[0004] The main purpose of this application is to provide an environmentally friendly groundwater pollution sampling device, which forms an independent sampling area between the two adjacent blocking components through the cooperation between the two adjacent blocking components, thereby preventing the water layers at the upper and lower depths from mixing with each other during the sampling process. At the same time, the sampling tanks in the three groups of sampling tank limit assemblies arranged between the two adjacent blocking components can achieve the goal of sampling groundwater in the same water layer according to the arrangement from high to low, thereby improving the diversity of groundwater sampling.

[0005] To achieve the above-mentioned purpose, the present application provides an environmentally friendly groundwater pollution sampling device, comprising an extension tube, wherein the outer side of the extension tube is fixed with a plugging assembly at equal intervals along its height direction, and the outer side of the extension tube between two adjacent plugging assemblies is fixed with three groups of sampling tank limit assemblies at equal intervals along its length direction, wherein each group of the sampling tank limit assemblies is formed by a combination of clamping rings fixed at equal intervals along the circumferential direction of the extension tube, and a sampling tank is placed on the inner side of the clamping ring, and a sampling tank opening and closing mechanism is rotatably connected above each group of the sampling tank limit assemblies, wherein the sampling tank opening and closing mechanism includes:

[0006] Arc-shaped sliding grooves are provided at equal intervals along the circumference of the extension tube and are located above the clamping ring;

[0007] A blocking ring is sleeved on the outside of the extension tube at the position of the arc-shaped chute and rotates along the extension tube. The blocking ring is provided with sampling holes at equal intervals along its circumference.

[0008] An inner cylinder mechanism is fixed inside the extension tube and corresponds to the arc-shaped slide groove;

[0009] The rotating sleeve is sleeved on the outside of the inner cylinder mechanism, and connecting columns passing through the arc-shaped sliding groove and fixed to the inner side of the blocking ring are fixed on the outside of the rotating sleeve at equal intervals along its circumferential direction.

[0010] Preferably, the bottom end of the extension tube is connected to a counterweight via a chain.

[0011] Preferably, the blocking assembly includes a first fixing ring and a second fixing ring symmetrically sleeved on the outside of the extension tube, and a rubber sleeve is fixedly connected at the edge position between the first fixing ring and the second fixing ring.

[0012] Preferably, the inner cylinder mechanism includes a cross-shaped connecting ring fixed to the inner wall of the extension tube above the arc-shaped slide groove, wherein a connecting cylinder is fixed below the cross-shaped connecting ring, and a connecting ring is fixed at the bottom end of the connecting cylinder, an annular cavity is formed between the connecting cylinder and the rotating sleeve, and a limit strip and a U-shaped limit seat extending into the annular cavity are fixed on the outside of the connecting cylinder, and the angle between the limit strip and the U-shaped limit seat is equal to the angle of the arc-shaped slide groove.

[0013] Preferably, a fixed push plate is fixedly connected to the inner side of the rotating sleeve and can slide between the limiting strip and the U-shaped limiting seat.

[0014] Preferably, a ventilation main pipe is vertically fixed at the center of the extension pipe, and the ventilation main pipe is connected to an inflation branch pipe 2 and an inflation branch pipe 1 which are connected to the inner side of the U-shaped limit seat and the interior of the blocking component.

[0015] Preferably, the bottom of the sealing ring is provided with an annular groove matching the top of the sampling tank.

[0016] The advantages of the present application are as follows: first, gas is injected into the ventilation main pipe by using an external inflation device and an external air pipe. The gas entering the ventilation main pipe enters the interior of the plugging assembly through the inflation branch pipe 1, causing the dry plugging assembly to gradually expand, forcing the contracted rubber sleeve to move out from between the fixing ring 1 and the fixing ring 2. After the plugging assembly is fully expanded, the rubber sleeve contacts the inner wall of the monitoring well, forming an independent sampling area between the two adjacent plugging assemblies, preventing the water layers at the upper and lower depths from mixing with each other during the sampling process, ensuring the independence and purity of the water samples of each layer, and being able to extract the water quality changes of the vertical distribution of groundwater. After the sampling is completed, the gas in the plugging assembly is pumped out and the sampling device is removed from the monitoring well.

[0017] Secondly, during the gradual expansion of the sealing component, the gas inside the ventilation main pipe also enters the inner side of the U-shaped limit seat through the second inflation branch pipe, thereby pushing the fixed push plate to move along the space between the U-shaped limit seat and the limit strip, and synchronously rotating the rotating sleeve and the connecting column. During the rotation of the connecting column, it slides along the inside of the arc-shaped slide groove and drives the sealing ring to rotate, so that the dislocated sampling hole corresponds to the opening at the top of the sampling tank. Then the groundwater enters the interior of the sampling tank from the sampling hole to sample the groundwater. At the same time, during the sampling process, through the sampling tanks in the three groups of sampling tank limit assemblies arranged between two adjacent sealing components, it is possible to sample groundwater in the same water layer in a high to low arrangement, thereby improving the diversity of groundwater sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings that constitute part of this application are used to provide a further understanding of this application and make other features, objects and advantages of this application more apparent. The illustrative embodiment drawings of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the external partial structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-section of the local structure of the present invention.

[0023] Figure 5 yes Figure 4 Enlarged structural diagram at point A in the middle.

[0024] Figure 6 It is a schematic structural diagram of the sampling tank opening and closing mechanism from the first perspective of the present invention.

[0025] Figure 7 This is a schematic structural diagram of the sampling tank opening and closing mechanism from a second viewing angle of the present invention.

[0026] In the above figure, 100, extension tube; 101, counterweight; 102, sampling tank; 103, clamping ring; 200, sealing assembly; 201, fixing ring 1; 202, rubber sleeve; 203, fixing ring 2; 300, ventilation main pipe; 301, inflation branch pipe 1; 302, inflation branch pipe 2; 400, sampling tank opening and closing mechanism; 401, sealing ring; 402, sampling hole; 403, cross-shaped connecting ring; 404, connecting tube; 405, connecting ring; 406, rotating sleeve; 407, arc-shaped slide groove; 408, connecting column; 409, limit strip; 410, fixed push plate; 411, U-shaped limit seat. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate to describe the embodiments of the present application here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0030] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0031] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] See also Figure 1-Figure 7 As shown, this embodiment provides an environmentally friendly groundwater pollution sampling device, including an extension tube 100, on the outside of the extension tube 100, plugging assemblies 200 are fixed at equal intervals along the height direction thereof, and on the outside of the extension tube 100 between two adjacent plugging assemblies 200, three groups of sampling tank limiting assemblies are fixed at equal intervals along the length direction thereof, wherein each group of the sampling tank limiting assemblies is formed by a combination of clamping rings 103 fixed at equal intervals along the circumferential direction of the extension tube 100, and a sampling tank 102 is placed on the inner side of the clamping ring 103, and a sampling tank opening and closing mechanism 400 is rotatably connected above each group of the sampling tank limiting assemblies, wherein the sampling tank opening and closing mechanism 400 includes:

[0034] The arc-shaped sliding grooves 407 are provided at equal intervals along the circumference of the extension tube 100 and are located above the clamping ring 103;

[0035] The sealing ring 401 is sleeved on the outside of the extension tube 100 at the position of the arc-shaped slide groove 407 and rotates along the extension tube 100. The sealing ring 401 is provided with sampling holes 402 at equal intervals along its circumference;

[0036] The inner cylinder mechanism is fixed inside the extension tube 100 and corresponds to the arc-shaped slide groove 407;

[0037] The rotating sleeve 406 is sleeved on the outside of the inner cylinder mechanism, and connecting columns 408 passing through the arc-shaped sliding grooves 407 and fixed to the inner side of the blocking ring 401 are fixed on the outside of the rotating sleeve 406 at equal intervals along its circumferential direction.

[0038] In this embodiment, the bottom end of the extension tube 100 is connected to a counterweight 101 through a chain. When in use, the counterweight 101 is connected to the bottom end of the extension tube 100 to increase the weight of the sampling device, so that the sampling device will not float up after the sealing assembly 200 expands.

[0039] In this embodiment, the sealing assembly 200 includes a fixing ring 1 201 and a fixing ring 203 which are symmetrically arranged on the outside of the extension tube 100, and a rubber sleeve 202 is fixedly connected at the edge position between the fixing ring 1 201 and the fixing ring 2 203. When in use, the sealing assembly 200 is inflated to gradually expand the dry sealing assembly 200, forcing the contracted rubber sleeve 202 to move out from between the fixing ring 1 201 and the fixing ring 2 203. After the sealing assembly 200 is fully opened, the rubber sleeve 202 contacts the inner wall of the monitoring well, so that an independent sampling area is formed between the two adjacent sealing assemblies 200, preventing the water layers at the upper and lower depths from mixing with each other during the sampling process, ensuring the independence and purity of the water samples of each layer, and being able to extract the water quality changes of the vertical distribution of groundwater.

[0040] In this embodiment, the inner cylinder mechanism includes a cross-shaped connecting ring 403 fixed to the inner wall of the extension tube 100 above the arc-shaped slide groove 407, wherein a connecting cylinder 404 is fixed below the cross-shaped connecting ring 403, and a connecting ring 405 is fixed at the bottom end of the connecting cylinder 404, an annular cavity is formed between the connecting cylinder 404 and the rotating sleeve 406, and a limiting strip 409 and a U-shaped limiting seat 411 extending into the annular cavity are fixed on the outside of the connecting cylinder 404, and the limiting strip 409 and the U-shaped limiting seat 411 are fixed to the outside of the connecting cylinder 404. The angle between them is equal to the angle of the arc-shaped slide groove 407. When in use, the fixed push plate 410 moves along the space between the U-shaped limit seat 411 and the limit bar 409, and the rotating sleeve 406 and the connecting column 408 rotate synchronously. During the rotation of the connecting column 408, it slides along the inside of the arc-shaped slide groove 407, and drives the sealing ring 401 to rotate, so that the misplaced sampling hole 402 corresponds to the opening at the top of the sampling tank 102, and then the groundwater enters the interior of the sampling tank 102 from the sampling hole 402 to sample the groundwater.

[0041] In this embodiment, the inner side of the rotating sleeve 406 is fixedly connected to a fixed push plate 410 that can slide between the limit bar 409 and the U-shaped limit seat 411. When in use, the fixed push plate 410 moves in the space between the limit bar 409 and the U-shaped limit seat 411, thereby driving the sealing ring 401 to rotate.

[0042] In this embodiment, a ventilation main pipe 300 is vertically fixed at the center position of the extension tube 100, and the ventilation main pipe 300 is connected to an inflation branch pipe 2 302 and an inflation branch pipe 1 301 which are connected to the inner side of the U-shaped limit seat 411 and the interior of the sealing component 200. When in use, the ventilation main pipe 300 is inflated through an external air source, and the inner side of the U-shaped limit seat 411 and the sealing component 200 are inflated respectively through the inflation branch pipe 2 302 and the inflation branch pipe 1 301.

[0043] In this embodiment, an annular groove matching the top of the sampling tank 102 is provided at the bottom of the sealing ring 401. When in use, the top side of the sampling tank 102 is covered by the annular groove, thereby improving the sealing effect of the sampling tank 102 and allowing groundwater to enter only from the sampling hole 402.

[0044] In summary:

[0045] Before placing the device into the monitoring well, first place the sampling tank 102 on the inner side of the clamping ring 103, use the clamping ring 103 to limit the sampling tank 102, then use the measuring line to place the extension tube 100 into the interior of the monitoring well, and connect the external air pipe to the top of the ventilation main pipe 300. After the extension tube 100 enters the interior of the monitoring well, when the top of the extension tube 100 is completely submerged in the interior of the monitoring well, then use the external inflation device and the external air pipe to inject gas into the ventilation main pipe 300. The gas entering the ventilation main pipe 300 enters the sealing component 200 through the inflation branch pipe 301. Inside, the dry-fried plugging assembly 200 gradually expands, forcing the contracted rubber sleeve 202 to move out from between the fixing ring 1 201 and the fixing ring 2 203. After the plugging assembly 200 is fully expanded, the rubber sleeve 202 contacts the inner wall of the monitoring well, so that an independent sampling area is formed between the two adjacent plugging assemblies 200, preventing the water layers at the upper and lower depths from mixing during the sampling process, ensuring the independence and purity of the water samples in each layer, and being able to extract the water quality changes of the vertical distribution of groundwater. After the sampling is completed, the gas inside the plugging assembly 200 is extracted and the sampling equipment is removed from the monitoring well.

[0046] During the gradual expansion of the sealing component 200, the gas inside the ventilation main pipe 300 also enters the inner side of the U-shaped limit seat 411 through the second inflation branch pipe 302, thereby pushing the fixed push plate 410 to move along the space between the U-shaped limit seat 411 and the limit bar 409, and synchronously rotating the rotating sleeve 406 and the connecting column 408. During the rotation of the connecting column 408, it slides along the inside of the arc-shaped slide groove 407 and drives the sealing ring 401 to rotate, so that the misaligned sampling hole 402 corresponds to the opening at the top of the sampling tank 102, and then the groundwater enters the interior of the sampling tank 102 from the sampling hole 402 to sample the groundwater. It is worth noting that during the synchronous rotation of the sealing ring 401 and the expansion of the sealing component 200, because the pipe diameter of the inflation branch pipe 202 is smaller than that of the inflation branch pipe 13 01 pipe diameter, therefore, when the plugging assembly 200 is fully expanded, the sampling hole 402 opened on the plugging ring 401 just corresponds to the opening at the top of the sampling tank 102. Subsequently, after the sampling tank 102 is filled, the air in the space between the U-shaped limit seat 411 and the limit bar 409 is extracted, so that the fixed push plate 410 is reset, prompting the sampling hole 402 to be misaligned with the opening at the top of the sampling tank 102 again, thereby preventing the groundwater inside the sampling tank 102 from mixing with the upper layer water during the removal of the sampling device, resulting in inaccurate later detection. During the sampling process, by using the sampling tanks 102 in the three groups of sampling tank limit assemblies arranged between two adjacent plugging assemblies 200, it is possible to sample groundwater in the same water layer according to the arrangement from high to low, thereby improving the diversity of groundwater sampling.

[0047] After the plugging assembly 200 expands, in order to prevent the sampling device from floating up due to the increase in its buoyancy, a counterweight block 101 is connected to the bottom end of the extension tube 100 to increase the weight of the sampling device, so that the sampling device will not float up after the plugging assembly 200 expands.

Claims

1. An environmentally friendly groundwater pollution sampling device, comprising an extension tube (100), characterized in that: The outer side of the extension tube (100) is fixed with a plugging assembly (200) at equal intervals along the height direction thereof, and the outer side of the extension tube (100) between two adjacent plugging assemblies (200) is fixed with three groups of sampling tank limiting assemblies at equal intervals along the length direction thereof, wherein each group of the sampling tank limiting assemblies is formed by a combination of clamping rings (103) fixed at equal intervals along the circumferential direction of the extension tube (100), and a sampling tank (102) is placed on the inner side of the clamping ring (103), and a sampling tank opening and closing mechanism (400) is rotatably connected above each group of the sampling tank limiting assemblies, wherein the sampling tank opening and closing mechanism (400) comprises: Arc-shaped sliding grooves (407) are provided at equal intervals along the circumferential direction of the extension tube (100) and are located above the clamping ring (103); A blocking ring (401) is sleeved on the outside of the extension tube (100) at the position of the arc-shaped slide groove (407) and rotates along the extension tube (100). The blocking ring (401) is provided with sampling holes (402) at equal intervals along its circumferential direction. An inner cylinder mechanism is fixed inside the extension tube (100) and corresponds to the arc-shaped sliding groove (407); A rotating sleeve (406) is sleeved on the outside of the inner cylinder mechanism, and connecting columns (408) passing through the arc-shaped sliding groove (407) and fixed to the inner side of the blocking ring (401) are fixed on the outside of the rotating sleeve (406) at equal intervals along its circumferential direction; The inner cylinder mechanism includes a cross-shaped connecting ring (403) fixed to the inner wall of the extension tube (100) above the arc-shaped slide groove (407), wherein a connecting cylinder (404) is fixed below the cross-shaped connecting ring (403), and a connecting ring (405) is fixed at the bottom end of the connecting cylinder (404), an annular cavity is formed between the connecting cylinder (404) and the rotating sleeve (406), and a limiting strip (409) and a U-shaped limiting seat (411) extending into the annular cavity are fixed on the outside of the connecting cylinder (404), and the angle between the limiting strip (409) and the U-shaped limiting seat (411) is equal to the angle of the arc-shaped slide groove (407).

2. An environmentally friendly groundwater pollution sampling device according to claim 1, characterized in that: The bottom end of the extension tube (100) is connected to a counterweight (101) via a chain.

3. The environmentally friendly groundwater pollution sampling device according to claim 1, characterized in that: The blocking assembly (200) comprises a fixing ring 1 (201) and a fixing ring 2 (203) which are symmetrically sleeved on the outside of the extension tube (100) in an upper and lower manner, and a rubber sleeve (202) is fixedly connected at the edge position between the fixing ring 1 (201) and the fixing ring 2 (203).

4. The environmentally friendly groundwater pollution sampling device according to claim 1, characterized in that: A fixed push plate (410) is fixedly connected to the inner side of the rotating sleeve (406) and is slidable between the limiting strip (409) and the U-shaped limiting seat (411).

5. The environmentally friendly groundwater pollution sampling device according to claim 1, characterized in that: A ventilation main pipe (300) is vertically fixed at the center of the extension pipe (100), and the ventilation main pipe (300) is connected to an inflation branch pipe 2 (302) and an inflation branch pipe 1 (301) which are connected to the inner side of the U-shaped limit seat (411) and the interior of the blocking component (200).

6. The environmentally friendly groundwater pollution sampling device according to claim 1, characterized in that: The bottom of the sealing ring (401) is provided with an annular groove that matches the top of the sampling tank (102).

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