Environment-friendly underground water pollution sampling device

Abstract

The invention discloses an environment-friendly underground water pollution sampling device, and belongs to the technical field of underground water sampling, the environment-friendly underground water pollution sampling device comprises an extension pipe, plugging assemblies are fixed on the outer side of the extension pipe at equal intervals along the height direction of the extension pipe, and three groups of sampling tank limiting assemblies are fixed on the outer side of the extension pipe between two adjacent plugging assemblies at equal intervals along the length direction of the extension pipe, each group of sampling tank limiting assembly is formed by combining clamping rings which are fixed at equal intervals in the circumferential direction of the extension pipe, sampling tanks are placed on the inner sides of the clamping rings, and a sampling tank opening and closing mechanism is rotationally connected to the upper part of each group of sampling tank limiting assembly. According to the sampling device, two adjacent plugging assemblies are matched with each other, so that an independent sampling area is formed between the two adjacent plugging assemblies, mutual mixing of water layers at upper and lower depths in the sampling process is prevented, and meanwhile, sampling tanks in the three groups of sampling tank limiting assemblies arranged between the two adjacent plugging assemblies are separated from each other, so that the sampling efficiency is improved. And the diversity of underground water sampling is improved.

Description

Technical Field

[0001] This application relates to the technical field of groundwater sampling, and more particularly, to an environment-friendly groundwater pollution sampling device. Background Art

[0002] Groundwater pollution monitoring refers to the monitoring and determination of the types, concentrations, and change trends of harmful substances in groundwater, the evaluation and understanding of the groundwater quality pollution status, and the monitoring work carried out to understand the current status of groundwater quality and the development trend of pollution. During the groundwater monitoring process, it is necessary to sample the groundwater and then detect the sampled samples to evaluate and investigate the current state of the groundwater.

[0003] In the prior art, such as a groundwater sampling device for different depths in groundwater investigation shown in the authorized publication number CN118624295B, after the sampling device is placed inside the monitoring well, several water depths are selected, and then the sampling device is successively sunk to the selected several depth positions. Subsequently, according to the change in height, the sampling cylinders corresponding to different depths are successively opened to sample the groundwater at different depths. However, during this process, since the selected several depths are in a mutually connected state, when sampling the groundwater at different depths, it is easy to cause mixing between the groundwater at different depths, resulting in inaccuracy during later detection. At the same time, between two adjacent selected depths, the diversity during sampling cannot be improved. Therefore, this application provides an environment-friendly groundwater pollution sampling device. Summary of the Invention

[0004] The main purpose of this application is to provide an environment-friendly groundwater pollution sampling device. Through the mutual cooperation between adjacent two plugging components, an independent sampling area is formed between the adjacent two plugging components, preventing the mixing of the water layers at the upper and lower two depths during the sampling process. At the same time, the sampling cans in the three groups of sampling can limiting components arranged between the adjacent two plugging components can sample the groundwater in the same water layer in a layout from high to low, improving the diversity of groundwater sampling.

[0005] To achieve the above object, this application provides an environment-friendly groundwater pollution sampling device, including an extension pipe. Along the height direction of the outer side of the extension pipe, plugging components are fixedly arranged at equal intervals. Along the length direction of the outer side of the extension pipe between two adjacent plugging components, three groups of sampling can limiting components are fixedly arranged at equal intervals. Among them, each group of sampling can limiting components is formed by a combination of clamping rings fixedly arranged at equal intervals along the circumferential direction of the extension pipe, and sampling cans are placed inside the clamping rings. Above each group of sampling can limiting components, a sampling can opening and closing mechanism is rotatably connected. Among them, the sampling can opening and closing mechanism includes: Arc-shaped sliding grooves are equidistantly opened along the circumferential direction of the extension pipe and are located above the clamping ring. A sealing ring is sleeved on the outer side of the extension pipe at the position of the arc-shaped sliding groove and rotates along the extension pipe. Sampling holes are equidistantly opened along the circumferential direction of the sealing ring. An inner cylinder mechanism is fixed inside the extension pipe and corresponds to the arc-shaped sliding groove. A rotating sleeve is sleeved on the outer side of the inner cylinder mechanism, and connecting columns that pass through the arc-shaped sliding groove and are fixed to the inner side of the sealing ring are equidistantly fixed along the circumferential direction on the outer side of the rotating sleeve.

[0006] Preferably, a counterweight is connected to the bottom end of the extension pipe by a chain.

[0007] Preferably, the sealing assembly includes a first fixing ring and a second fixing ring that are symmetrically sleeved on the outer side of the extension pipe up and down, and a rubber sleeve is fixedly connected at the edge position between the first fixing ring and the second fixing ring.

[0008] Preferably, the inner cylinder mechanism includes a cross-shaped connecting ring fixed to the inner wall of the extension pipe above the arc-shaped sliding groove. Among them, 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 limiting strip and a U-shaped limiting seat that extend into the annular cavity are fixed on the outer side of the connecting cylinder, and the angle between the limiting strip and the U-shaped limiting seat is equal to the angle of the arc-shaped sliding groove.

[0009] Preferably, a fixed push plate that can slide mutually between the limiting strip and the U-shaped limiting seat is fixedly connected to the inner side of the rotating sleeve.

[0010] Preferably, a ventilation main pipe is vertically fixed at the central position of the extension pipe, and an inflation branch pipe two and an inflation branch pipe one that are connected to the inner side of the U-shaped limiting seat and the inside of the sealing assembly are connected to the ventilation main pipe.

[0011] Preferably, an annular groove that matches the top of the sampling tank is opened at the bottom of the sealing ring.

[0012] The advantages of the present application are as follows: First, an external inflation device and an external trachea are used to inject gas into the ventilation main pipe. The gas entering the ventilation main pipe enters the inside of the plugging assembly through the first inflation branch pipe, causing the dried plugging assembly to gradually expand, forcing the contracted rubber sleeve to move out from between the first fixing ring and the second fixing ring. After the plugging assembly is fully opened, the rubber sleeve contacts the inner wall of the monitoring well, forming an independent sampling area between adjacent two plugging assemblies, preventing the water layers at two depths from being mixed with each other during the sampling process, ensuring the independence and purity of each layer of water samples, and enabling the extraction of the water quality changes in the vertical distribution of groundwater. After the sampling is completed, the gas inside the plugging assembly is pumped out and the sampling device is taken out from the monitoring well; Second, during the gradual expansion of the plugging assembly, the gas inside the ventilation main pipe also enters the inside 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, 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 chute and drives the plugging ring to rotate, making the misaligned sampling holes correspond to the openings at the top of the sampling tank. Subsequently, groundwater enters the inside of the sampling tank through the sampling holes, sampling 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 adjacent two plugging assemblies, the groundwater can be sampled in a layout from high to low within the same water layer, improving the diversity of groundwater sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more obvious. The schematic embodiments of the 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: Figure 1 is the overall structural schematic diagram of the present invention.

[0014] Figure 2 is the external partial structural schematic diagram of the present invention.

[0015] Figure 3 is the overall sectional structural schematic diagram of the present invention.

[0016] Figure 4 is the sectional partial structural schematic diagram of the present invention.

[0017] Figure 5 is Figure 4 the enlarged structural schematic diagram at A in

[0018] Figure 6 is the first perspective structural schematic diagram of the sampling tank opening and closing mechanism of the present invention.

[0019] Figure 7 It is a schematic structural diagram of the second perspective of the sampling tank opening and closing mechanism of the present invention.

[0020] In the above figures, 100 is an extension pipe; 101 is a counterweight; 102 is a sampling tank; 103 is a clamping ring; 200 is a plugging assembly; 201 is a first fixing ring; 202 is a rubber sleeve; 203 is a second fixing ring; 300 is a ventilation main pipe; 301 is a first inflation branch pipe; 302 is a second inflation branch pipe; 400 is a sampling tank opening and closing mechanism; 401 is a plugging ring; 402 is a sampling hole; 403 is a cross-shaped connecting ring; 404 is a connecting cylinder; 405 is a connecting ring; 406 is a rotating sleeve; 407 is an arc-shaped sliding groove; 408 is a connecting column; 409 is a limiting strip; 410 is a fixed push plate; 411 is a U-shaped limiting seat. Detailed implementation manners

[0021] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0022] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0024] Moreover, in addition to being used to represent orientation or positional relationships, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0025] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0026] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will refer to the accompanying drawings and combine the embodiments to detail this application.

[0027] See Figures 1-7 As shown, this embodiment provides an environment-friendly groundwater pollution sampling device, including an extension pipe 100. Along the height direction of the extension pipe 100, sealing components 200 are fixedly arranged at equal intervals on the outer side. Along the length direction of the extension pipe 100 outside the extension pipe 100 between two adjacent sealing components 200, three groups of sampling tank limiting components are fixedly arranged at equal intervals. Among them, each group of sampling tank limiting components is formed by clamping rings 103 fixedly arranged at equal intervals along the circumferential direction of the extension pipe 100, and sampling tanks 102 are placed inside the clamping rings 103. Above each group of sampling tank limiting components, a sampling tank opening and closing mechanism 400 is rotatably connected. Among them, the sampling tank opening and closing mechanism 400 includes: Arc-shaped sliding grooves 407 are opened at equal intervals along the circumferential direction of the extension pipe 100 and are located above the clamping rings 103; A sealing ring 401 is sleeved on the outer side of the extension pipe 100 at the position of the arc-shaped sliding groove 407 and rotates along the extension pipe 100. Sampling holes 402 are opened at equal intervals along the circumferential direction of the sealing ring 401; An inner cylinder mechanism is fixed inside the extension pipe 100 and corresponds to the arc-shaped sliding groove 407; A rotating sleeve 406 is sleeved on the outer side of the inner cylinder mechanism, and connecting columns 408 that pass through the arc-shaped sliding groove 407 and are fixed to the inner side of the sealing ring 401 are fixedly arranged at equal intervals along the circumferential direction on the outer side of the rotating sleeve 406.

[0028] In this embodiment, a counterweight 101 is connected to the bottom end of the extension pipe 100 by a chain. During use, by connecting the counterweight 101 to the bottom end of the extension pipe 100, the weight of the sampling device is increased, so that the sampling device will not float after the plugging assembly 200 expands.

[0029] In this embodiment, the plugging assembly 200 includes a first fixing ring 201 and a second fixing ring 203 that are symmetrically sleeved outside the extension pipe 100 up and down, and a rubber sleeve 202 is fixedly connected to the edge position between the first fixing ring 201 and the second fixing ring 203. During use, by inflating the inside of the plugging assembly 200, the dried plugging assembly 200 gradually expands, forcing the contracted rubber sleeve 202 to move out from between the first fixing ring 201 and the second fixing ring 203. After the plugging assembly 200 is fully opened, the rubber sleeve 202 contacts the inner wall of the monitoring well, forming an independent sampling area between two adjacent plugging assemblies 200, preventing the water layers at two depths from being mixed with each other during the sampling process, ensuring the independence and purity of each layer of water samples, and enabling the extraction of the water quality changes in the vertical distribution of groundwater.

[0030] In this embodiment, the inner cylinder mechanism includes a cross-shaped connecting ring 403 fixed to the inner wall of the extension pipe 100 above the arc-shaped chute 407. Among them, a connecting cylinder 404 is fixed below the cross-shaped connecting ring 403, and a connecting ring 405 is fixed to 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 to 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 chute 407. During use, by moving the fixed push plate 410 along the space between the U-shaped limiting seat 411 and the limiting strip 409, the rotating sleeve 406 and the connecting column 408 are rotated synchronously. During the rotation of the connecting column 408, it slides along the inside of the arc-shaped chute 407 and drives the plugging ring 401 to rotate, so that the misaligned sampling holes 402 are aligned with the openings at the top of the sampling tank 102. Subsequently, groundwater enters the inside of the sampling tank 102 through the sampling holes 402 to sample the groundwater.

[0031] In this embodiment, a fixed push plate 410 that can slide along the space between the limiting strip 409 and the U-shaped limiting seat 411 is fixedly connected to the inner side of the rotating sleeve 406. During use, by moving the fixed push plate 410 in the space between the limiting strip 409 and the U-shaped limiting seat 411, the plugging ring 401 is driven to rotate.

[0032] In this embodiment, a ventilation main pipe 300 is vertically fixed at the central position of the extension pipe 100, and an inflation branch pipe two 302 and an inflation branch pipe one 301, which are connected to the inside of the U-shaped limit seat 411 and the inside of the plugging assembly 200, are connected to the ventilation main pipe 300. During use, the ventilation main pipe 300 is inflated through an external air source, and the inside of the U-shaped limit seat 411 and the plugging assembly 200 are inflated through the inflation branch pipe two 302 and the inflation branch pipe one 301 respectively.

[0033] In this embodiment, an annular groove matching the top of the sampling tank 102 is formed at the bottom of the plugging ring 401. During use, the top side of the sampling tank 102 is covered through the annular groove, the sealing effect of the sampling tank 102 is improved, and the groundwater can only enter through the sampling hole 402.

[0034] To sum up: Before the device is placed into the monitoring well, first place the sampling tank 102 inside the clamping ring 103, use the clamping ring 103 to limit the sampling tank 102, then use the measuring wire to place the extension pipe 100 into the monitoring well, and externally connect an air pipe to communicate with the top of the ventilation main pipe 300. After the extension pipe 100 enters the monitoring well, when the top end of the extension pipe 100 is completely submerged inside the monitoring well, then use an 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 inside of the plugging assembly 200 through the inflation branch pipe one 301, so that the dried plugging assembly 200 gradually expands, forcing the contracted rubber sleeve 202 to move out from between the fixing ring one 201 and the fixing ring two 203. After the plugging assembly 200 is fully opened, the rubber sleeve 202 contacts the inner wall of the monitoring well, forming an independent sampling area between two adjacent plugging assemblies 200, preventing the water layers at two depths from being mixed with each other during the sampling process, ensuring the independence and purity of each layer of water samples, and being able to extract the water quality changes in the vertical distribution of groundwater. After the sampling is completed, the gas inside the plugging assembly 200 is pumped out and the sampling device is taken out of the monitoring well. During the gradual expansion of the plugging assembly 200, the gas inside the main ventilation pipe 300 also enters the inner side of the U-shaped limit seat 411 through the second inflatable 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 strip 409, synchronously rotating the rotating sleeve 406 and the connecting column 408. During the rotation of the connecting column 408, it slides along the inner part of the arc-shaped chute 407 and drives the plugging ring 401 to rotate, so that the misaligned sampling hole 402 corresponds to the opening at the top of the sampling tank 102. Subsequently, the groundwater enters the sampling tank 102 through the sampling hole 402 for sampling the groundwater. It should be noted that during the synchronous rotation of the plugging ring 401 and the expansion of the plugging assembly 200, since the pipe diameter of the second inflatable branch pipe 302 is smaller than that of the first inflatable branch pipe 301, 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 strip 409 is pumped out to reset the fixed push plate 410, causing the sampling hole 402 to be misaligned with the opening at the top of the sampling tank 102 again, preventing the groundwater inside the sampling tank 102 from being mixed with the upper water during the removal of the sampling device, resulting in inaccurate later detection. During the sampling process, the sampling tanks 102 in the three groups of sampling tank limiting components arranged between two adjacent plugging assemblies 200 are used to sample the groundwater in the same water layer in a high-to-low arrangement, improving the diversity of groundwater sampling; After the plugging assembly 200 expands, in order to prevent the sampling device from floating due to the increase in its buoyancy, a counterweight 101 is connected to the bottom end of the extension pipe 100 to increase the weight of the sampling device, so that the sampling device will not float after the plugging assembly 200 expands.

Claims

1. An environmentally friendly groundwater pollution sampling device, including an extension pipe (100), characterized in that, On the outer side of the extension pipe (100), plugging components (200) are fixedly arranged at equal intervals along its height direction. On the outer side of the extension pipe (100) between two adjacent plugging components (200), three groups of sampling tank limiting components are fixedly arranged at equal intervals along its length direction. Among them, each group of sampling tank limiting components is formed by a clamping ring (103) fixedly arranged at equal intervals along the circumferential direction of the extension pipe (100), and a sampling tank (102) is placed inside each clamping ring (103). Above each group of sampling tank limiting components, a sampling tank opening and closing mechanism (400) is rotatably connected. Among them, the sampling tank opening and closing mechanism (400) includes: Arc-shaped sliding grooves (407) are opened at equal intervals along the circumferential direction of the extension pipe (100) and are located above the clamping ring (103). A plugging ring (401) is sleeved on the outer side of the extension pipe (100) at the position of the arc-shaped sliding groove (407) and rotates along the extension pipe (100). Sampling holes (402) are opened at equal intervals along the circumferential direction of the plugging ring (401). An inner cylinder mechanism is fixed inside the extension pipe (100) and corresponds to the arc-shaped sliding groove (407). A rotating sleeve (406) is sleeved on the outer side of the inner cylinder mechanism, and connecting columns (408) that pass through the arc-shaped sliding groove (407) and are fixed to the inner side of the plugging ring (401) are fixedly arranged at equal intervals along the circumferential direction on the outer side of the rotating sleeve (406).

2. The environmental protection type groundwater pollution sampling device according to claim 1, wherein, A counterweight block (101) is connected to the bottom end of the extension pipe (100) by a chain.

3. The environmental protection type groundwater pollution sampling device according to claim 1, characterized in that, The plugging component (200) includes a first fixing ring (201) and a second fixing ring (203) that are symmetrically sleeved on the outer side of the extension pipe (100) up and down, and a rubber sleeve (202) is fixedly connected at the edge position between the first fixing ring (201) and the second fixing ring (203).

4. An environment-friendly groundwater pollution sampling device according to claim 1, characterized in that, The inner cylinder mechanism includes a cross-shaped connecting ring (403) fixed to the inner wall of the extension pipe (100) above the arc-shaped sliding groove (407). Among them, a connecting cylinder (404) is fixed below the cross-shaped connecting ring (403), and a connecting ring (405) is fixed to 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 outer side 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 sliding groove (407).

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

6. The environmentally friendly groundwater pollution sampling device according to claim 4, characterized in that, A ventilation main pipe (300) is vertically fixed at the central position of the extension pipe (100), and an inflation branch pipe two (302) and an inflation branch pipe one (301) that are connected to the inner side of the U-shaped limiting seat (411) and the inside of the plugging component (200) are connected to the ventilation main pipe (300).

7. An environment-friendly groundwater pollution sampling device according to claim 1, characterized in that, The bottom of the plugging ring (401) is provided with an annular groove matching the top of the sampling tank (102).

Images