Ultrasonic dredging device

Abstract

The utility model relates to the technical field of dredging devices, in particular to an ultrasonic dredging device which comprises a mounting seat, an air bag, an ultrasonic transducer, a water quality monitor and air supply equipment. The air bag, the ultrasonic transducer and the water quality monitor are all hung in the underground water environment monitoring well, the air supply equipment is communicated with the air bag, and the air supply equipment is used for intermittently inflating or deflating the air bag; and the ultrasonic transducer is driven to be close to or far away from the well wall of the underground water environment monitoring well so as to carry out intermittent dredging operation. According to the utility model, automatic dredging operation can be realized only by installing the ultrasonic dredging device in the underground water environment monitoring well, and the operation is simple; the air bag is inflated and deflated through the air supply equipment, so that the ultrasonic transducer is driven to be close to or away from the well wall of the underground water environment monitoring well to conduct intermittent dredging operation, and then pulse dredging is achieved.

Description

Technical Field

[0001] This utility model relates to the field of dredging device technology, and in particular to an ultrasonic dredging device. Background Technology

[0002] Groundwater is an important component of water resources. Groundwater monitoring not only provides data support for the scientific acquisition of groundwater resources, but also provides data assurance for the rational development and utilization of groundwater. It is one of the objects of investigation and monitoring by hydrogeological and environmental geology departments. Currently, setting up a large number of shallow groundwater environmental quality monitoring wells is the main method and means of monitoring groundwater.

[0003] The inventors discovered the following problems during the implementation of this invention:

[0004] 1) The groundwater environment monitoring wells currently set up are small-diameter shallow groundwater environment monitoring wells. Their well walls are mostly protected by PVC pipes. Since the monitored aquifers are mainly Quaternary loose rocks, siltation is common, which directly affects the sample quality and may even make it impossible to sample water quality.

[0005] 2) Currently, the commonly used method is borehole dredging, which involves drilling down a drilling platform to remove slag or combining it with high-pressure flushing using an air compressor. This method requires significant force during dredging operations, making it difficult to control the force in deep wells. It is not suitable for monitoring wells with small diameter PVC pipe walls. On the one hand, it easily damages the PVC pipe walls, leading to the direct scrapping and reconstruction of the monitoring well, resulting in serious economic losses. On the other hand, the existing equipment makes it difficult to observe whether the water quality in the monitoring well is turbid or whether the pipe wall is blocked during operation, resulting in low dredging efficiency. Furthermore, traditional borehole dredging equipment is mostly large-scale equipment, and groundwater environment monitoring wells are mostly located in places with inconvenient transportation or limited open space, which is not conducive to dredging operations.

[0006] 3) At present, dredging methods and dredging equipment are separate, relying entirely on the experience of operators. There are no operational standards, and the degree of arbitrariness is too high, making it difficult to achieve automated operation.

[0007] Therefore, it is necessary to provide a new ultrasonic dredging device to solve the above-mentioned technical problems. Utility Model Content

[0008] The main purpose of this invention is to provide an ultrasonic dredging device, which aims to solve the problems of complex operation and low efficiency of existing dredging devices.

[0009] To achieve the above objectives, the present invention proposes an ultrasonic dredging device, comprising a mounting base, an airbag, an ultrasonic transducer, a water quality monitor, and an air supply device. The mounting base is disposed at the wellhead of a groundwater environment monitoring well. The airbag, the ultrasonic transducer, and the water quality monitor are all suspended inside the groundwater environment monitoring well via the mounting base. The air supply device is connected to the airbag and is used to intermittently inflate or deflate the airbag to move the ultrasonic transducer closer to or further away from the well wall of the groundwater environment monitoring well for intermittent dredging operations.

[0010] Optionally, the ultrasonic dredging device further includes a first pressure sensor and a second pressure sensor that are electrically connected to the air supply equipment. The first pressure sensor is disposed inside the airbag and is used to detect changes in air pressure inside the airbag. The second pressure sensor is suspended inside the groundwater environment monitoring well and is disposed at a position corresponding to the maximum size of the airbag.

[0011] Optionally, the mounting base has at least two spaced mounting rods that extend along the depth direction of the groundwater environment monitoring well. The ultrasonic dredging device also includes a scraper seat and an elastic element. The scraper seat is slidably mounted on the two mounting rods and abuts against the airbag. The scraper seat is used to scrape silt from the well wall of the groundwater environment monitoring well. The elastic element is sleeved on each mounting rod. One end of the elastic element is connected to the mounting base, and the other end is connected to the scraper seat. When the airbag is intermittently inflated or deflated, it can drive the scraper seat to reciprocate in the vertical direction.

[0012] Optionally, the scraper seat includes a mounting body and a plurality of scraper blades. The mounting body is slidably connected to the mounting rod, and the mounting body has a through hole. The scraper blades are inclined upward in the horizontal direction, and the plurality of scraper blades are arranged circumferentially along the mounting body.

[0013] Optionally, the number of ultrasonic transducers is multiple, and the multiple ultrasonic transducers are arranged at intervals along the vertical direction in the groundwater environment monitoring well.

[0014] Optionally, the water quality monitor includes at least one or more of the following: turbidity sensor, color sensor, pH sensor, conductivity sensor, dissolved oxygen sensor, and oxidation-reduction potential sensor.

[0015] Optionally, the ultrasonic dredging device further includes a liquid flow pipe and a water pump. The liquid flow pipe is suspended on the mounting base, and one end of the liquid flow pipe passes through the mounting base and communicates with the water pump, while the other end extends to the bottom wall of the groundwater environment monitoring well.

[0016] Optionally, the ultrasonic dredging device further includes a control cabinet, and the control module is electrically connected to the ultrasonic transducer, the water quality monitor and the air supply equipment respectively.

[0017] In this utility model, during dredging operations, the ultrasonic dredging device can be installed inside the groundwater environment monitoring well to achieve automatic dredging operations, which is simple to operate. By inflating and deflating the airbag through the air supply equipment, the ultrasonic transducer can be moved closer to or away from the well wall of the groundwater environment monitoring well to carry out intermittent dredging operations, thereby realizing pulse dredging, which can improve dredging efficiency while ensuring dredging effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the ultrasonic dredging device in an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 AA section view in the middle;

[0021] Figure 3 yes Figure 2 BB section view in the middle.

[0022] Explanation of icon numbers:

[0023] 1 Mounting base, 1.1 Mounting rod, 2 Airbag, 3 Ultrasonic transducer, 4 Water quality monitor, 5 First pressure sensor, 6 Second pressure sensor, 7 Liquid flow pipe, 8 Scraper seat, 8.1 Scraper blade, 9 Elastic element.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] This invention proposes an ultrasonic dredging device, which aims to solve the problems of complex operation and low efficiency of existing dredging devices.

[0027] like Figure 1As shown, this embodiment provides an ultrasonic dredging device, and a method for water quality monitoring and dredging operations using the ultrasonic dredging device includes the following steps:

[0028] S1: An ultrasonic dredging device is installed in a groundwater environment monitoring well. The ultrasonic dredging device includes a mounting base 1, an airbag 2, an ultrasonic transducer 3, a water quality monitor 4, and an air supply device. The mounting base 1 is located at the wellhead of the groundwater environment monitoring well. The airbag 2, ultrasonic transducer 3, and water quality monitor 4 are all suspended in the groundwater environment monitoring well through the mounting base 1. The air supply device is connected to the airbag 2 and is used to inflate or deflate the airbag 2 to move the ultrasonic transducer 3 closer to or away from the well wall of the groundwater environment monitoring well. The airbag 2 abuts against the ultrasonic transducer 3 to move the ultrasonic transducer 3 intermittently closer to or away from the well wall of the groundwater environment monitoring well along with the airbag 2. The airbag 2, ultrasonic transducer 3, and water quality monitor 4 are all connected to the mounting base 1 through flexible cables to be suspended in the groundwater environment monitoring well.

[0029] S2: The initial water quality parameter Z of the kth monitoring well was obtained using water quality monitor 4. k Where: k is a natural number greater than 0;

[0030] S3: Set the parameter threshold, if Z k If the value is less than or equal to M, then let k = k + 1 and return to S2; otherwise, proceed to S4.

[0031] S4: Ultrasonic transducer 3 is used to dredge the groundwater environmental monitoring well. Specifically:

[0032] S4.1. Start the air supply equipment and ultrasonic transducer 3 to begin the qth dredging operation, and turn off the external power supply and ultrasonic transducer 3 after the ultrasonic transducer 3 has been running for time t.

[0033] In S4.1, the air supply equipment can intermittently inflate or deflate the airbag 2, while simultaneously driving the ultrasonic transducer 3 to intermittently move closer to or further away from the well wall of the groundwater environment monitoring well, so as to achieve pulsed dredging.

[0034] The ultrasonic dredging device also includes a first pressure sensor 5 and a second pressure sensor 6, which are electrically connected to the air supply equipment. The first pressure sensor 5 is installed inside the airbag 2 to detect changes in air pressure inside the airbag 2. The second pressure sensor 6 is suspended inside the groundwater environment monitoring well and is located at the position corresponding to the maximum size of the airbag 2.

[0035] In S4.1, the specific steps for the air supply equipment to intermittently inflate or deflate the airbag 2 are as follows:

[0036] ① Set the maximum and minimum threshold values ​​for the first pressure sensor 5 and the second pressure sensor 6 respectively. When the detected value of the first pressure sensor 5 and the second pressure sensor 6 is lower than the minimum threshold, the signal value is 0. The signal value is 2 between the minimum threshold and the maximum threshold. When the maximum threshold is reached, the signal value is 1.

[0037] ② The air supply equipment is activated to intermittently inflate or deflate the airbag 2 according to the signal values ​​of the first pressure sensor 5 and the second pressure sensor 6. Specifically:

[0038] When the signal values ​​of the first pressure sensor 5 and the second pressure sensor 6 are both 0, the air supply equipment begins to inflate the airbag 2, and the airbag 2 begins to expand to drive the ultrasonic transducer 3 closer to the well wall of the groundwater environment monitoring well.

[0039] When the airbag 2 is inflated and pressed against the well wall, the detection value of the first pressure sensor 5 is between the minimum threshold and the maximum threshold and the signal value is 2. The detection value of the second pressure sensor 6 reaches the maximum threshold and the signal value switches to 1. The air supply equipment continues to inflate the airbag 2. The airbag 2 is elongated. After the airbag 2 is inflated and pressed against the well wall, it continues to expand along its length to push the scraper seat 8 downward.

[0040] When the airbag 2 is inflated to its maximum size, the detection value of the first pressure sensor 5 reaches the maximum threshold and the signal value switches to 1, the signal value of the second pressure sensor 6 is 1, and the air supply device begins to deflate the airbag 2.

[0041] When the detection values ​​of the first pressure sensor 5 and the second pressure sensor 6 are both below the minimum threshold, the signal value is 0, and the air supply device starts to inflate the airbag 2.

[0042] In this embodiment, the power supply device is electrically connected to the first pressure sensor 5 and the second pressure sensor 6 through a controller, so as to realize the intermittent inflation or deflation of the airbag according to the signal values ​​of the first pressure sensor 5 and the second pressure sensor 6.

[0043] S4.2. The real-time water quality parameters S of the groundwater environment monitoring well are measured using water quality monitor 4. q If S q >M, let Z k =S q q = q + 1, t = 2t, return to S4.1; then if M ≤ S q ≤Z k Then let t = t / 2 and q = q + 1, and return to S4.1; if S q If the value is less than M, the dredging operation is complete.

[0044] For example, Well 1: The groundwater environment monitoring well has a diameter of 75mm and a depth of 15 meters; the water quality parameter is turbidity, and its M is the threshold value of the water quality parameter, which is 10 NTU; the initial t is 60ms.

[0045] For example, Well 1: The groundwater environment monitoring well has a diameter of 110mm and a depth of 10 meters; the water quality parameter is pH value, and the threshold value of M for the water quality parameter is 6.5; the initial t is 90ms.

[0046] During dredging operations, simply installing the ultrasonic dredging device inside the groundwater environment monitoring well enables automatic dredging, making operation simple. The airbag 2 is inflated and deflated via an air supply device, causing the ultrasonic transducer 3 to move closer to or further away from the well wall for dredging. The operating time of the air supply device and the ultrasonic transducer 3 can be adjusted based on real-time water quality parameters during dredging, allowing for flexible adjustments to the working time according to actual conditions and improving adaptability. This avoids over-dredging, which could affect work efficiency and waste energy, or incomplete dredging, which could affect the dredging effect and prevent rework. It ensures dredging effectiveness while improving dredging efficiency. The dredging device and method provided in this embodiment can overcome the errors of human operation and eliminate the hidden dangers of low efficiency and inaccuracy in judging whether groundwater environmental monitoring wells are silted up or need dredging and maintenance by manual visual inspection. When performing dredging operations, the force applied is reduced, the force of operation in deep wells is easy to control, and it is not easy to damage PVC pipes. It is also easier to judge whether the water quality in the monitoring well is turbid or whether the pipe wall is blocked, thus improving dredging efficiency and reducing the economic losses caused by the direct scrapping and reconstruction of monitoring wells due to dredging operations. The size of the whole set of equipment is reduced, making it very suitable for operation in groundwater environmental monitoring wells with inconvenient transportation or limited space, and facilitating automation.

[0047] In this embodiment, the water quality parameters are any one or more of the following: turbidity, color, pH value, conductivity, dissolved oxygen value, and oxidation-reduction potential. During dredging operations, the water quality parameters can be detected by the water quality monitor 4, which can intuitively reflect the effect of the dredging operation, facilitate accurate control of the dredging time, ensure dredging effect and work efficiency, and save energy. Using multiple parameters as the water quality parameters in this embodiment can effectively avoid the situation where the inaccurate measurement of a single parameter affects the operation effect, and help ensure the stability of water quality test results.

[0048] In this embodiment, at least two spaced mounting rods 1.1 are formed on the mounting base 1, and the mounting rods 1.1 extend along the depth direction of the groundwater environment monitoring well; the ultrasonic dredging device also includes a scraper seat 8 and an elastic element 9. The scraper seat 8 is slidably mounted on the two mounting rods 1.1, and the scraper seat 8 is in contact with the airbag 2. The scraper seat 8 is used to scrape the well wall of the groundwater environment monitoring well; each mounting rod 1.1 is fitted with an elastic element 9, one end of the elastic element 9 is connected to the mounting base 1, and the other end is connected to the scraper seat 8; when the airbag 2 is intermittently inflated or deflated, it can drive the scraper seat 8 to reciprocate in the vertical direction. When the airbag 2 is inflated to its maximum size, it can push the scraper seat 8 to the bottom of the mounting rod 1.1. When the airbag is deflated, the scraper seat 8 moves upward along the mounting rod 1.1 under the elastic force of the elastic element 9. With the cooperation of the airbag 2 and the elastic element 9, it can move back and forth in the vertical direction in the groundwater environment monitoring well, thereby realizing the vertical dredging operation and improving the dredging effect.

[0049] In this embodiment, the scraper seat 8 includes a mounting body and multiple scraper blades 8.1. The mounting body is slidably connected to the mounting rod 1.1, and a through hole is provided on the mounting body. The scraper blades 8.1 are inclined upwards in the horizontal direction, and the multiple scraper blades 8.1 are arranged circumferentially along the mounting body. The through hole on the mounting body reduces the resistance of the mounting body in water during dredging operations, and the inclined arrangement of the scraper blades 8.1 can disperse the force and increase the contact area when the scraper blades 8.1 come into contact with the silt on the well wall, so as to facilitate the removal of the silt.

[0050] In this embodiment, there are multiple ultrasonic transducers 3, which are arranged vertically at intervals within the groundwater environment monitoring well. The multiple ultrasonic transducers 3 effectively improve dredging efficiency, and the through holes on the scraper allow the ultrasonic transducers 3 to pass through when the scraper seat 8 reciprocates vertically.

[0051] In this embodiment, the water quality monitor 4 includes at least one of the following: a turbidity sensor, a color sensor, a pH sensor, a conductivity sensor, a dissolved oxygen sensor, and a redox potential sensor. During dredging operations, corresponding water quality monitors need to be set according to the selected water quality parameters.

[0052] In this embodiment, the ultrasonic dredging device also includes a liquid flow pipe 7 and a water pump. The liquid flow pipe 7 is suspended on the mounting base 1, and one end of the liquid flow pipe 7 passes through the mounting base 1 and is connected to the water pump, while the other end extends to the bottom wall of the groundwater environment monitoring well.

[0053] Before measuring water quality parameters using water quality monitor 4, a water pump needs to be started to inject water into the groundwater environment monitoring well through the liquid flow pipe 7 to dilute the water until the water surface covers water quality monitor 4; in S4.2, when M≤S q ≤Zk When this is done, the water pump must first be started to pump out the water in the groundwater environmental monitoring well through the liquid flow pipe 7, and then water must be injected into the groundwater environmental monitoring well to dilute it until the water surface covers the water quality monitor 4, and then return to S4.1.

[0054] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An ultrasonic sludge removal device, characterized in that, The ultrasonic dredging device includes a mounting base (1), an airbag (2), an ultrasonic transducer (3), a water quality monitor (4), and an air supply device. The mounting base (1) is set at the wellhead of the groundwater environment monitoring well. The airbag (2), the ultrasonic transducer (3), and the water quality monitor (4) are all suspended in the groundwater environment monitoring well through the mounting base (1). The air supply device is connected to the airbag (2) and is used to intermittently inflate or deflate the airbag (2) to move the ultrasonic transducer (3) closer to or away from the well wall of the groundwater environment monitoring well for intermittent dredging operations.

2. The ultrasonic sludge removal device as described in claim 1, characterized in that, The ultrasonic dredging device also includes a first pressure sensor (5) and a second pressure sensor (6) that are electrically connected to the air supply equipment. The first pressure sensor (5) is installed inside the airbag (2) to detect changes in air pressure inside the airbag (2). The second pressure sensor (6) is suspended inside the groundwater environment monitoring well and is located at the position corresponding to the maximum size of the airbag (2).

3. The ultrasonic sludge removal device as described in claim 2, characterized in that, At least two spaced mounting rods (1.1) are formed on the mounting base (1), and the mounting rods (1.1) extend along the depth direction of the groundwater environment monitoring well; the ultrasonic sludge removal device also includes a scraper seat (8) and an elastic element (9), the scraper seat (8) is slidably disposed on the two mounting rods (1.1), and the scraper seat (8) abuts against the airbag (2), the scraper seat (8) is used to scrape sludge from the well wall of the groundwater environment monitoring well; the elastic element (9) is sleeved on each mounting rod (1.1), one end of the elastic element (9) is connected to the mounting base (1), and the other end is connected to the scraper seat (8); when the airbag (2) is intermittently inflated or deflated, it can drive the scraper seat (8) to move back and forth in the vertical direction.

4. The ultrasonic sludge removal device as described in claim 3, characterized in that, The scraper seat (8) includes an installation body and a plurality of scraper blades (8.1). The installation body is slidably connected to the installation rod (1.1), and the installation body has a through hole. The scraper blades (8.1) are inclined upward in the horizontal direction, and the plurality of scraper blades (8.1) are arranged around the circumference of the installation body.

5. The ultrasonic sludge removal device according to any one of claims 1 to 4, characterized in that, The number of ultrasonic transducers (3) is multiple, and the multiple ultrasonic transducers (3) are arranged at intervals in the groundwater environment monitoring well along the vertical direction.

6. The ultrasonic sludge removal device according to any one of claims 1 to 4, characterized in that, The water quality monitor (4) includes at least one or more of the following: turbidity sensor, color sensor, pH sensor, conductivity sensor, dissolved oxygen sensor, and oxidation-reduction potential sensor.

7. The ultrasonic sludge removal device according to any one of claims 1 to 4, characterized in that, The ultrasonic dredging device also includes a liquid flow pipe (7) and a water pump. The liquid flow pipe (7) is suspended on the mounting base (1), and one end of the liquid flow pipe (7) passes through the mounting base (1) and is connected to the water pump, while the other end extends to the bottom wall of the groundwater environment monitoring well.

8. The ultrasonic sludge removal device according to any one of claims 1 to 4, characterized in that, The ultrasonic dredging device also includes a control cabinet, which is electrically connected to the ultrasonic transducer (3), the water quality monitor (4), and the gas supply equipment.

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