Sampling device for investigating shallow groundwater environment of polluted site

Abstract

The utility model relates to the technical field of sampling devices, and discloses a sampling device for investigating a shallow groundwater environment of a polluted site, which comprises a sampling barrel, a fixing rod is mounted at the top of the sampling barrel, and two sides of the fixing rod are movably connected with sealing plates through sealing treatment mechanisms. A sealing groove is formed in the position, under the sealing plate, of the top of the sampling barrel, a sampling opening is formed in the lower end of one side of the sealing groove, the other side of the sampling opening penetrates into the sampling barrel, a mounting base is fixedly connected to the bottom of the sampling barrel, and a sampling needle head is fixedly connected to the bottom of the mounting base through a clamping and locking mechanism; according to the device, the sampling needle head can be quickly fixed through the clamping and locking mechanism, so that the sampling needle head is greatly convenient to mount and dismount by an operator, and the replacement and maintenance efficiency of the sampling needle head by a maintainer is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a sampling device used for shallow groundwater environmental investigation in contaminated sites. Background Art

[0002] With the acceleration of my country's industrialization and urbanization, groundwater pollution has become increasingly prominent. In order to investigate the groundwater environmental quality and the distribution of pollutants in groundwater, it is necessary to conduct sampling and analysis on groundwater. The main object of groundwater environmental investigation in construction land is shallow non-confined aquifer groundwater.

[0003] For example, the Chinese patent with patent application number 202221916572.0 is a shallow groundwater fixed-depth sampling device that does not require well construction. This patent samples groundwater at a targeted depth, achieves sealing and water-stopping through a mechanical structure, realizes accurate investigation of groundwater pollution, and facilitates accurate remediation of groundwater pollution.

[0004] However, the sampling needle and the sampling barrel are integrated in the above patent during use, so that when the sampling needle is damaged, it is not easy to replace the sampling needle alone, but it needs to be replaced as a whole, which leads to a high replacement cost. Utility Model Content

[0005] The utility model aims to provide a sampling device for shallow groundwater environment investigation in contaminated sites, which solves the problems raised in the background technology.

[0006] An embodiment of the present application provides a sampling device for investigating the shallow groundwater environment of a contaminated site, including a sampling barrel, a fixing rod is installed on the top of the sampling barrel, and sealing plates are movably connected to both sides of the fixing rod through a sealing processing mechanism, a sealing groove is provided at the top of the sampling barrel just below the sealing plate, a sampling port is provided at the lower end of one side of the sealing groove, and the other side of the sampling port penetrates into the interior of the sampling barrel, the bottom of the sampling barrel is fixedly connected to a mounting seat, and the bottom of the mounting seat is fixedly connected to a sampling needle through a locking mechanism.

[0007] By adopting the above technical solution, the device can quickly sample and process groundwater at a specified depth, thereby greatly improving the practicability of the device.

[0008] Optionally, the sealing processing mechanism includes a motor installed on the top of the fixed rod, the output end of the motor extends to the interior of the fixed rod and is fixedly connected to a screw rod, the outer surface of the screw rod is movably connected to a screw nut, and both sides of the screw nut extend to the outside of the fixed rod through a slide groove and are fixedly connected to two sealing plates respectively.

[0009] By adopting the above technical solution, the device can quickly seal the sampling port through the sealing mechanism, thereby preventing groundwater from other depths from mixing into the sampling port during sampling, thereby greatly improving the sampling accuracy and quality of the device.

[0010] Optionally, the locking mechanism includes a plurality of locking blocks installed on the peripheral side of the top of the sampling needle and a mounting groove opened at the bottom of the mounting seat, the bottom of the mounting groove is provided with a plurality of guide grooves, and the inner wall of the mounting groove is provided with a plurality of locking grooves.

[0011] By adopting the above technical solution, the device can quickly fix the sampling needle through the locking mechanism, which greatly facilitates the installation and removal of the sampling needle by the operator, and thus greatly improves the replacement and maintenance efficiency of the sampling needle by the maintenance personnel.

[0012] Optionally, a plurality of elastic telescopic rods are installed on the top of the inner cavity of the installation slot, and a pressing plate is fixedly connected to the bottom of the elastic telescopic rods.

[0013] By adopting the above technical solution, the card block can be squeezed by using the elastic telescopic rod and the pressure plate, so that the card block can be more tightly connected with the card slot.

[0014] Optionally, the card blocks, guide grooves and card slots are each provided with four groups, and the four groups of card blocks, guide grooves and card slots are distributed in a ring array.

[0015] By adopting the above technical solution and utilizing the cooperation of multiple groups of card blocks and card slots, the fixing effect of the device is improved.

[0016] Optionally, a sealing sleeve is fixedly connected to the outer surface of the sealing plate.

[0017] By adopting the above technical solution, the sealing function of the sealing sleeve is utilized to make the sealing performance of the device stronger.

[0018] Optionally, the elastic telescopic rod is a telescopic rod structure with a spring disposed inside.

[0019] By adopting the above technical solution and utilizing the elastic effect of the spring, the elastic telescopic rod has better telescopic properties.

[0020] Optionally, a controller is fixedly connected to one side of the fixing rod.

[0021] By adopting the above technical solution, the electrical appliances inside the device can be controlled more conveniently using the controller.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. The technical solution of the present application arranges a sampling needle, a mounting seat, a clamping block, a mounting groove, an elastic telescopic rod, a pressure plate, a guide groove and a clamping groove, so that the device can quickly fix the sampling needle through a locking mechanism, thereby greatly facilitating the operator to install and disassemble the sampling needle, thereby greatly improving the maintenance personnel's replacement and maintenance efficiency of the sampling needle.

[0024] 2. The technical solution of the present application arranges a fixed rod, a slide groove, a motor, a screw, a screw nut, a sealing plate and a sealing groove, so that the device can quickly seal the sampling port through a sealing processing mechanism, thereby avoiding the mixing of groundwater from other depths into the sampling port during sampling, thereby greatly improving the sampling accuracy and quality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a sampling device for shallow groundwater environmental investigation in a contaminated site according to the utility model;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of a sampling tube in a sampling device for shallow groundwater environment investigation in a contaminated site when a sealing plate is not installed;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of a sampling needle and a card block connection part of a sampling device for shallow groundwater environmental investigation in a contaminated site according to the utility model;

[0029] Figure 4 The utility model is a cross-sectional view of a mounting seat in a sampling device for investigating shallow groundwater environment in a contaminated site.

[0030] In the figure: 1. sampling tube; 2. fixing rod; 3. sealing plate; 4. sampling port; 5. sealing groove; 6. mounting seat; 7. sampling needle; 8. clamping block; 9. mounting groove; 10. elastic telescopic rod; 11. pressing plate; 12. guide groove; 13. clamping slot; 14. controller; 15. motor; 16. screw; 17. screw nut; 18. slide groove. DETAILED DESCRIPTION

[0031] See also Figure 1-4The utility model provides a technical solution: a sampling device for investigating the shallow groundwater environment of a contaminated site, comprising a sampling tube 1, a fixing rod 2 is installed on the top of the sampling tube 1, and sealing plates 3 are movably connected to both sides of the fixing rod 2 through a sealing processing mechanism, a sealing groove 5 is provided at the top of the sampling tube 1 just below the sealing plate 3, a sampling port 4 is provided at the lower end of one side of the sealing groove 5, and the other side of the sampling port 4 penetrates into the interior of the sampling tube 1, a mounting seat 6 is fixedly connected to the bottom of the sampling tube 1, and a sampling needle 7 is fixedly connected to the bottom of the mounting seat 6 through a locking mechanism.

[0032] By adopting the above technical solution, the device can quickly sample and process groundwater at a specified depth, thereby greatly improving the practicability of the device.

[0033] In the implementation mode of the present application, Figure 1-2 As shown, the sealing processing mechanism includes a motor 15 installed on the top of the fixed rod 2, the output end of the motor 15 extends to the inside of the fixed rod 2 and is fixedly connected to a screw rod 16, the outer surface of the screw rod 16 is movably connected to a screw nut 17, and both sides of the screw nut 17 extend to the outside of the fixed rod 2 through a slide groove 18 and are fixedly connected to the two sealing plates 3 respectively.

[0034] By adopting the above technical solution, the device can quickly seal the sampling port 4 through the sealing mechanism, thereby preventing groundwater from other depths from mixing into the sampling port 4 during sampling, thereby greatly improving the sampling accuracy and quality of the device.

[0035] In the implementation mode of the present application, Figure 3-4 As shown, the locking mechanism includes a plurality of locking blocks 8 installed on the top peripheral side of the sampling needle 7 and a mounting groove 9 opened at the bottom of the mounting seat 6, a plurality of guide grooves 12 are opened at the bottom of the mounting groove 9, and a plurality of locking grooves 13 are opened on the inner wall of the mounting groove 9.

[0036] By adopting the above technical solution, the device can quickly fix the sampling needle 7 through the locking mechanism, which greatly facilitates the installation and removal of the sampling needle 7 by the operator, and thus greatly improves the replacement and maintenance efficiency of the sampling needle 7 by the maintenance personnel.

[0037] In the implementation mode of the present application, Figure 4 As shown, a plurality of elastic telescopic rods 10 are installed at the top of the inner cavity of the installation slot 9 , and a pressing plate 11 is fixedly connected to the bottom of the elastic telescopic rods 10 .

[0038] By adopting the above technical solution, the elastic telescopic rod 10 and the pressing plate 11 can be used to squeeze the clamping block 8, so that the clamping block 8 can be clamped more tightly with the clamping slot 13.

[0039] In the implementation mode of the present application, Figure 3-4 As shown, four groups of the clamping blocks 8 , the guiding grooves 12 and the clamping grooves 13 are provided, and the four groups of the clamping blocks 8 , the guiding grooves 12 and the clamping grooves 13 are distributed in a ring array.

[0040] By adopting the above technical solution and utilizing the cooperation of multiple groups of clamping blocks 8 and clamping slots 13, the fixing effect of the device is improved.

[0041] In the implementation mode of the present application, Figure 1 As shown, a sealing sleeve is fixedly connected to the outer surface of the sealing plate 3.

[0042] By adopting the above technical solution, the sealing function of the sealing sleeve is utilized to make the sealing performance of the device stronger.

[0043] In the implementation mode of the present application, Figure 4 As shown, the elastic telescopic rod 10 is a telescopic rod structure with a spring disposed inside.

[0044] By adopting the above technical solution and utilizing the elastic effect of the spring, the elastic telescopic rod 10 has better telescopic properties.

[0045] In the implementation mode of the present application, Figure 1 As shown, a controller 14 is fixedly connected to one side of the fixed rod 2 .

[0046] By adopting the above technical solution, the electrical appliances inside the device can be controlled more conveniently using the controller 14.

[0047] When in use, the operator can first insert the sampling needle 7 into the soil to be tested, and when the shallow water layer reaches the specified depth, the operator starts the motor 15 through the controller 14, so that the motor 15 drives the screw rod 16 to rotate. When the screw rod 16 rotates, it will drive the screw nut 17 to move upward under the limiting action of the slide groove 18, so that the screw nut 17 can drive the sealing plate 3 to move upward along the sealing groove 5. When the sealing plate 3 moves upward, the sampling port 4 can sample the contaminated water at the specified depth. When the sampling is completed, the operator uses the above principle to move the sealing plate 3 downward, so that the sealing plate 3 can quickly and completely block and seal the sampling port 4, thereby avoiding sampling. When the sampling port 4 is mixed with groundwater from other depths, the sampling accuracy and quality of the device are greatly improved. Finally, the operator can pull out the sealed sampling tube 1 upward. When the sampling needle 7 is accidentally damaged during use, the operator can push the sampling needle 7 upward to squeeze the elastic telescopic rod 10 through the pressure plate 11. At the same time, the sampling needle 7 can drive the block 8 to disengage from the slot 13, and then rotate the sampling needle 7 so that the block 8 can be rotated to the guide slot 12. Finally, the sampling needle 7 can be pulled out downward along the guide slot 12. Similarly, the operator can quickly install and fix the new sampling needle 7, thereby greatly improving the replacement and maintenance efficiency of the sampling needle 7 by maintenance personnel.

Claims

1. A sampling device for shallow groundwater environmental investigation at a contaminated site, comprising a sampling tube (1), characterized in that: A fixing rod (2) is installed at the top of the sampling tube (1), and both sides of the fixing rod (2) are movably connected to sealing plates (3) through a sealing processing mechanism. A sealing groove (5) is provided at the top of the sampling tube (1) just below the sealing plate (3), and a sampling port (4) is provided at the lower end of one side of the sealing groove (5). The other side of the sampling port (4) penetrates into the interior of the sampling tube (1). The bottom of the sampling tube (1) is fixedly connected to a mounting seat (6), and the bottom of the mounting seat (6) is fixedly connected to a sampling needle (7) through a locking mechanism.

2. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 1, characterized in that: The sealing processing mechanism comprises a motor (15) mounted on the top of the fixed rod (2); the output end of the motor (15) extends to the inside of the fixed rod (2) and is fixedly connected to a screw rod (16); the outer surface of the screw rod (16) is movably connected to a screw nut (17); both sides of the screw nut (17) extend to the outside of the fixed rod (2) through a slide groove (18) and are respectively fixedly connected to two sealing plates (3).

3. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 1, characterized in that: The locking mechanism comprises a plurality of locking blocks (8) mounted on the top peripheral side of the sampling needle (7) and a mounting groove (9) provided at the bottom of the mounting seat (6); a plurality of guide grooves (12) are provided at the bottom of the mounting groove (9); and a plurality of locking grooves (13) are provided on the inner wall of the mounting groove (9).

4. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 3, characterized in that: A plurality of elastic telescopic rods (10) are installed at the top of the inner cavity of the installation groove (9), and a pressing plate (11) is fixedly connected to the bottom of the elastic telescopic rods (10).

5. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 3, characterized in that: The clamping blocks (8), guide grooves (12) and clamping grooves (13) are each provided in four groups, and the four groups of clamping blocks (8), guide grooves (12) and clamping grooves (13) are distributed in a ring array.

6. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 1, characterized in that: A sealing sleeve is fixedly connected to the outer surface of the sealing plate (3).

7. A sampling device for shallow groundwater environmental investigation in contaminated sites according to claim 4, characterized in that: The elastic telescopic rod (10) is a telescopic rod structure with a spring arranged inside.

8. The sampling device for shallow groundwater environment investigation in contaminated sites according to claim 1 is characterized by: A controller (14) is fixedly connected to one side of the fixing rod (2).

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