Well washing and sampling equipment for underground water monitoring well

Abstract

The utility model discloses underground water monitoring well washing sampling equipment, which relates to the technical field of well washing sampling equipment, and comprises a vehicle body, rollers and a main pipeline are arranged on the bottom surface of the vehicle body, a middle through hole is formed in the main pipeline, an elbow and a suction pipe are respectively arranged on the upper surface and the bottom surface of the main pipeline, and the elbow is communicated with the suction pipe through the middle through hole. And the suction pipe is fixedly communicated with a high-pressure air pipe. The sampling cavities are circumferentially designed in the main pipeline, a piston is slidably connected to the interior of each sampling cavity, and an adjusting screw rod is rotatably connected to each piston. The device is reasonable in design structure, adopts a structure that the sliding piston is matched with the adjusting screw rod, can control the piston to move up and down by manually rotating the adjusting screw rod after a main pipeline reaches a preset depth, realizes accurate sampling, avoids the problem of position deviation possibly caused by directly extracting a sample from a well bottom, and improves the sampling efficiency. And the authenticity and representativeness of the collected sample are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of well-washing sampling equipment, in particular to a well-washing sampling equipment for a groundwater monitoring well. Background Art

[0002] Groundwater monitoring wells are used to detect water quality. After a groundwater monitoring well is opened and used for a long time, in order to ensure the monitoring quality of groundwater, the monitoring well must be cleaned first and then sampling and testing are carried out. In the existing technology, a bele tube is generally used for well cleaning and sampling. During the well cleaning process, the bele tube needs to be lowered into the monitoring well multiple times to take water and then drain the water.

[0003] A Chinese patent with announcement number CN219622683U discloses a groundwater monitoring well washing and sampling device. It arranges two semicircular sampling boxes inside the main pipe. The two sampling boxes can be raised and lowered by rotating the threaded rods inside the main pipe respectively. The interior of the sampling box is hollow, and a valve is installed on the top of it. Water is pumped from both sides of the outside of the main pipe. Well washing and sampling can be carried out from the two sampling boxes respectively. The two operations do not affect each other, making the entire device convenient for well washing and sampling, and the well washing and sampling positions can be adjusted.

[0004] The above solution uses two sampling boxes inside the main pipe to simultaneously complete well flushing and sampling. However, the well flushing effect is poor when only pumping is performed. Furthermore, direct pumping from the bottom of the pipe produces a large amount of sample water, which can lead to deviations in the sampling location and affect the accuracy of the test results. Therefore, we provide a groundwater monitoring well flushing and sampling device to solve the above problems. Utility Model Content

[0005] 1) Technical problems solved

[0006] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a groundwater monitoring well washing and sampling device.

[0007] 2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a groundwater monitoring well washing and sampling device, comprising:

[0009] The vehicle body has rollers installed on the bottom surface of the vehicle body.

[0010] A main pipeline is provided with a central through hole, an elbow and a suction pipe are respectively installed on the upper surface and the bottom surface of the main pipeline, and the elbow and the suction pipe are connected through the central through hole, and a high-pressure air pipe is fixedly connected to the suction pipe.

[0011] The sampling cavity is designed in a circular shape in the main pipeline. A piston is slidably connected to each sampling cavity. An adjusting screw is rotatably connected to the piston. The top end of the adjusting screw passes through the sampling cavity and extends to the top of the main pipeline. The adjusting screw is threadedly connected to the main pipeline. A sampling tube is installed on the vehicle body, and the sampling tube is connected to the sampling cavity.

[0012] The lifting assembly is arranged on the vehicle body and is used for lifting and lowering the main pipeline.

[0013] Furthermore, a filter is installed on the sampling tube.

[0014] Furthermore, the lifting assembly includes a winch installed on the vehicle body, a fixing frame fixedly connected to the vehicle body, and a first guide wheel and a second guide wheel are installed on the fixing frame.

[0015] Furthermore, a connecting seat is fixedly connected to the main pipe, a lifting lug is fixedly connected to the connecting seat, and the retractable end of the winch passes through the first guide wheel and the second guide wheel in sequence and is fixedly connected to the lifting lug.

[0016] 3) Beneficial effects:

[0017] Compared with the existing technology, the groundwater monitoring well washing and sampling equipment has the following beneficial effects:

[0018] 1. The design of the sampling chamber in the utility model adopts a structure of a sliding piston and an adjusting screw. After the main pipeline reaches the predetermined depth, the piston can be controlled to move up and down by manually rotating the adjusting screw to achieve precise sampling, avoiding the position deviation problem that may be caused by directly extracting samples from the bottom of the well, and ensuring the authenticity and representativeness of the collected samples.

[0019] 2. The utility model provides a high-pressure gas pipe on the suction pipe to deliver high-pressure gas to the bottom of the well, and strongly flushes the clogged parts of the bottom of the well. It can not only effectively remove the sediment at the bottom of the well and reduce the pollution of the well wall, but also prevent the problems of insufficient pumping or incomplete well washing that may exist in the traditional water pumping and well washing method, thereby ensuring the quality and efficiency of the well washing. Since the high-pressure gas can fully stir the bottom of the well, it helps to release the pollutants in the sediment, further improving the effect of the well washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the main pipeline in the present utility model;

[0022] Figure 3 It is a cross-sectional view of the main pipeline in the present utility model;

[0023] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure at center A.

[0024] In the figure: 1. Vehicle body; 2. Winch; 3. Fixed frame; 4. First guide wheel; 5. Second guide wheel; 6. Main pipeline; 7. Middle through hole; 8. Elbow; 9. Suction tube; 10. Connecting seat; 11. Lifting ear; 12. High-pressure gas pipe; 13. Sampling chamber; 14. Adjusting screw; 15. Piston; 16. Sampling tube; 17. Filter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-4 As shown, the utility model provides a technical solution: a groundwater monitoring well washing and sampling device, including a vehicle body 1, a main pipeline 6, a sampling chamber 13 and a lifting assembly.

[0027] Rollers are installed on the bottom surface of the vehicle body 1, and the vehicle body 1 can move on the ground by relying on the rollers.

[0028] A central through hole 7 is provided in the main pipe 6, and an elbow 8 and a suction pipe 9 are installed on the upper surface and the bottom surface of the main pipe 6 respectively. The elbow 8 and the suction pipe 9 are connected through the central through hole 7, and the suction pipe 9 is brought into contact with the blockage position of the monitoring well. A high-pressure gas pipe 12 is fixedly connected to the suction pipe 9, and high-pressure gas is sent into the high-pressure gas pipe 12. These high-pressure gases will enter the suction pipe 9 and perform high-pressure flushing on the blocked part of the bottom of the well, so that the formed sewage is discharged into the well through the central through hole 7 and the elbow 8 under the action of pressure.

[0029] The sampling chamber 13 is designed in a circular shape in the main pipe 6. A piston 15 is slidably connected to each sampling chamber 13. An adjusting screw 14 is rotatably connected to the piston 15. The top of the adjusting screw 14 passes through the sampling chamber 13 and extends to the top of the main pipe 6. The adjusting screw 14 is threadedly connected to the main pipe 6. A sampling tube 16 is installed on the vehicle body 1, and the sampling tube 16 is connected to the sampling chamber 13. When sampling is required after the main pipe 6 is extended to a suitable depth, it is necessary to rotate the adjusting screw 14 and drive the piston 15 to move upward in the sampling chamber 13. The suction force generated by the adjusting screw 14 draws well water from the sampling tube 16 into the sampling chamber 13 to complete the sampling of groundwater. A filter 17 is installed on the sampling tube 16. The filter 17 can perform preliminary filtration on the groundwater entering the sampling tube 16 to prevent large stones from clogging the sampling tube 16.

[0030] The lifting assembly is arranged on the vehicle body 1 and is used to lift and lower the main pipeline 6. The lifting assembly includes a winch 2 installed on the vehicle body 1 and a fixing frame 3 fixedly connected to the vehicle body 1. The fixing frame 3 is equipped with a first guide wheel 4 and a second guide wheel 5. The first guide wheel 4 and the second guide wheel 5 serve to guide the retracting and extending end of the winch 2.

[0031] A connecting seat 10 is fixedly connected to the main pipeline 6, and a lifting lug 11 is fixedly connected to the connecting seat 10. The retractable end of the winch 2 passes through the first guide wheel 4 and the second guide wheel 5 in sequence and is fixedly connected to the lifting lug 11. After the retractable end of the winch 2 is connected to the lifting lug 11, when the main pipeline 6 needs to be moved upward, the steel rope can be reeled in by the retractable end of the winch 2, and the main pipeline 6 can be smoothly moved upward under the guidance of the second guide wheel 5.

[0032] It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a mechanical connection or an electrical connection; "connected" can mean a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A groundwater monitoring well washing and sampling equipment, characterized in that: include: A vehicle body (1), wherein rollers are mounted on the bottom surface of the vehicle body (1); A main pipe (6), wherein a central through hole (7) is provided in the main pipe (6), an elbow (8) and a suction pipe (9) are respectively installed on the upper surface and the bottom surface of the main pipe (6), and the elbow (8) and the suction pipe (9) are connected through the central through hole (7), and a high-pressure air pipe (12) is fixedly connected to the suction pipe (9); The sampling cavity (13) is circularly designed in the main pipe (6), and a piston (15) is slidably connected in each sampling cavity (13). An adjusting screw (14) is rotatably connected to the piston (15). The top end of the adjusting screw (14) passes through the sampling cavity (13) and extends to the top of the main pipe (6). The adjusting screw (14) is threadedly connected to the main pipe (6). A sampling tube (16) is installed on the vehicle body (1), and the sampling tube (16) is connected to the sampling cavity (13); The lifting assembly is arranged on the vehicle body (1) and is used for lifting and lowering the main pipeline (6).

2. The groundwater monitoring well flushing and sampling equipment according to claim 1 is characterized in that: A filter (17) is installed on the sampling tube (16).

3. The groundwater monitoring well flushing and sampling equipment according to claim 1 is characterized in that: The lifting assembly comprises a winch (2) mounted on a vehicle body (1), a fixing frame (3) fixedly connected to the vehicle body (1), and a first guide wheel (4) and a second guide wheel (5) mounted on the fixing frame (3).

4. The groundwater monitoring well flushing and sampling equipment according to claim 3 is characterized by: A connecting seat (10) is fixedly connected to the main pipe (6), a lifting lug (11) is fixedly connected to the connecting seat (10), and the retractable end of the hoist (2) passes through the first guide wheel (4) and the second guide wheel (5) in sequence and is fixedly connected to the lifting lug (11).

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