Testing device for simulating water body bottom mud pollutant release

Abstract

The utility model discloses a test device for simulating water body sediment pollutant release, which relates to the technical field of water body simulation tests and comprises a base and a water bucket arranged on the base, a cover plate is arranged on the water bucket, a stirrer is arranged on the cover plate, a discharging pipe used for discharging of the water bucket is arranged at the bottom of the water bucket, and a supporting mechanism is arranged on the base. The supporting mechanism is used for supporting the base to move, the supporting mechanism comprises a telescopic rod arranged on the base, the extending end of the telescopic rod is connected with a support, idler wheels are installed on the support, a pull rope used for fixing the cover plate is arranged on the support, a sampling mechanism is arranged on the water bucket, and the sampling mechanism is used for taking out a water sample and a mud sample in the water bucket. The contact area of the base and the ground is increased, the stability of the equipment is improved, the cover plate is conveniently fixed, and meanwhile, the internal condition of the water bucket is conveniently observed.

Description

Technical Field

[0001] This utility model relates to the field of simulated water body testing technology, specifically a test device for simulating the release of pollutants from bottom sediments in water bodies. Background Technology

[0002] When pollutants enter water bodies, they undergo a series of processes including adsorption, absorption, and sedimentation, eventually settling slowly in the bottom sediment. Due to continuous accumulation, the concentration of pollutants in the bottom sediment often far exceeds that in the overlying water, sometimes by several times, leading to severe pollution of the sediment. Therefore, in-depth research into the adsorption and release mechanisms of pollutants in bottom sediment, clarifying whether the sediment is the "source" of pollutant release or the "reservoir" of accumulation, is crucial for solving the problem of river and lake sediment pollution. This will provide solid scientific support for future pollution prevention and control efforts in rivers and lakes. In the existing technology, utility model patent CN 216718426 U provides a test device for simulating the release of pollutants from water body sediment. It includes a base, an electric telescopic rod and a bucket on top of the base, a fixed plate at the top of the electric telescopic rod, a connecting plate connected to the bottom of the fixed plate, a motor below the connecting plate, a stirring rod on the motor's output shaft, grooves on both sides of the connecting plate, and a clamping device at the bottom of the fixed plate and on both sides of the connecting plate.

[0003] The current experimental device for simulating the release of pollutants from bottom sediment in water bodies has an independently set pressure plate, and the contact area between the pressure plate and the ground is relatively small, resulting in poor stability of the device and making it difficult to observe the internal condition of the water tank. Therefore, we propose an experimental device for simulating the release of pollutants from bottom sediment in water bodies to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a test device for simulating the release of pollutants from bottom sediments in water bodies, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test device for simulating the release of pollutants from bottom sediment in water bodies, comprising a base, a bucket mounted on the base, a cover plate on the bucket, a mixer mounted on the cover plate, a discharge pipe for unloading the bucket at the bottom of the bucket, a support mechanism on the base for supporting the movement of the base, the support mechanism including a telescopic rod mounted on the base, a bracket connected to the extended end of the telescopic rod, rollers mounted on the bracket, a pull rope for fixing the cover plate on the bracket, and a sampling mechanism on the bucket.

[0006] Preferably, the sampling mechanism is used to extract water and mud samples from the bucket.

[0007] Preferably, the sampling mechanism includes a fixed base that penetrates the side wall of the water bucket, and the fixed base is provided with an openable sampling port.

[0008] Preferably, the telescopic rod has a telescopic length greater than or equal to the roller radius, and the telescopic rod has at least two sets symmetrically distributed on both sides of the support.

[0009] Preferably, the bracket has a U-shaped structure, and the bracket and rollers vertically penetrate the base.

[0010] Preferably, the rollers are provided in at least two components and are evenly distributed on two sets of supports.

[0011] Preferably, the top of the pull rope is fixed to the side wall of the cover plate, and the bottom end of the pull rope is tied to the bracket.

[0012] Preferably, the fixing base is a concave arc-shaped plate structure, and the fixing base is made of a visible material.

[0013] Preferably, the length of the fixing seat is less than the height of the bucket, and the arc length of the fixing seat is less than one-third of the arc length of the bucket.

[0014] Preferably, the sampling ports are provided with multiple sets arranged vertically on the fixed base, and the sampling ports are provided with valves.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Operate the telescopic rod. The telescopic rod retracts, causing the support to move downwards. The downward movement of the support causes the roller to follow and pass through the base. When the roller contacts the ground, it acts as a fulcrum. Through the retraction of the telescopic rod, the base is pulled upwards. After the base separates from the ground, push the base. The base moves through the telescopic rod, support, and roller. After moving to the designated position, reverse the above steps to make the base contact the ground and the roller move upwards to separate from the ground. This increases the contact area between the base and the ground and improves the stability of the equipment.

[0017] 2. Place bottom sediment from a lake into a bucket and level it, filling it to one-fifth of the bucket's effective height. Add the collected lake water sample or prepared water sample to the bucket until it reaches the set effective height. Tighten the rope and tie it to the support. Repeat the above steps, lower the support and tighten it again. When lowering the support, ensure that the rollers do not touch the ground. Secure the cover with the rope, then drive the mixer. Simulate water disturbance with the stirring blades on the stirring rod. Observe the cement mixture inside the bucket through the fixed base. Then, collect water and sediment samples at fixed times through sampling ports at different heights for chemical analysis. Obtain the static release process of pollutants in the bottom sediment in this water body, making it easier to secure the cover and observe the inside of the bucket. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support mechanism in this utility model;

[0020] Figure 3 This is a schematic diagram of the sampling mechanism in this utility model.

[0021] In the diagram: 1. Base; 2. Bucket; 3. Cover plate; 4. Feed pipe; 5. Mixer; 6. Support mechanism; 61. Telescopic rod; 62. Bracket; 63. Roller; 64. Pull rope; 7. Sampling mechanism; 71. Fixed seat; 72. Sampling port. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 An experimental device for simulating the release of pollutants from bottom sediment in water bodies includes a base 1, a water tank 2 mounted on the base 1, a cover plate 3 on the water tank 2, a mixer 5 mounted on the cover plate 3, a discharge pipe 4 at the bottom of the water tank 2 for unloading, a support mechanism 6 on the base 1 for supporting the movement of the base 1, and the support mechanism 6 includes a telescopic rod 61 mounted on the base 1, the extended end of the telescopic rod 61 being connected to the top side wall of a bracket 62 via a fixing block, and rollers 63 mounted on the bracket 62. The bracket 62 is provided with a pull rope 64 for fixing the cover plate 3. The telescopic rod 61 has a telescopic length greater than or equal to the radius of the roller 63. The telescopic rod 61 has at least two sets symmetrically distributed on both sides of the bracket 62. The telescopic rod 61 can be an electric or hydraulic telescopic rod. The bracket 62 has a U-shaped structure. The bracket 62 and the roller 63 vertically penetrate the base 1. The roller 63 has at least two sets and is evenly distributed on the two sets of brackets 62. The top of the pull rope 64 is fixed to the side wall of the cover plate 3, and the bottom of the pull rope 64 is tied to the bracket 62.

[0024] Operate the telescopic rod 61. When the telescopic rod 61 retracts, the bracket 62 moves downward. The downward movement of the bracket 62 causes the roller 63 to move downward and penetrate the base 1. When the roller 63 contacts the ground, the roller 63 acts as a support point. Through the retraction of the telescopic rod 61, the base 1 is pulled upward. After the base 1 separates from the ground, it is pushed. The base 1 moves through the telescopic rod 61, the bracket 62, and the roller 63. After moving to the designated position, the above steps are reversed to make the base 1 contact the ground, and the roller 63 moves upward and separates from the ground. This increases the contact area between the base 1 and the ground, improving the stability of the equipment.

[0025] The bucket 2 is equipped with a sampling mechanism 7, which is used to extract water and mud samples from the bucket 2. The sampling mechanism 7 includes a fixed seat 71 that penetrates the side wall of the bucket 2. The fixed seat 71 is equipped with an openable sampling port 72. The fixed seat 71 is a concave arc-shaped plate structure. The length of the fixed seat 71 is less than the height of the bucket 2, and the arc length of the fixed seat 71 is less than one-third of the arc length of the bucket 2. The fixed seat 71 is made of visible material. The sampling port 72 is provided with multiple sets of vertically arranged sampling ports on the fixed seat 71. The sampling port 72 is equipped with a valve.

[0026] The bottom sediment from a lake is placed into bucket 2 and leveled, reaching one-fifth of the effective height of bucket 2. Lake water samples or prepared water samples are then added to bucket 2 until the set effective height is reached. The pull rope 64 is tightened and tied to the support 62. The above steps are repeated, and the support 62 is lowered and tightened again. When lowering the support 62, care must be taken to ensure that the rollers 63 do not touch the ground. The cover plate 3 is secured using the pull rope 64. Then, the mixer 5 is driven, and the stirring blades on the stirring rod 5 simulate water disturbance. The condition of the cement mixture inside bucket 2 is observed through the fixing seat 71. Water and sediment samples are then collected at fixed times through sampling ports 72 at different heights for chemical analysis. This reveals the static release process of pollutants in the bottom sediment in this type of water, facilitating the fixing of the cover plate 3 and the observation of the inside of bucket 2.

[0027] Working principle: This utility model operates by retracting the telescopic rod 61. The retraction of the telescopic rod 61 causes the support 62 to move downwards. The downward movement of the support 62 causes the roller 63 to follow, penetrating the base 1. When the roller 63 contacts the ground, it acts as a fulcrum. Through the retraction of the telescopic rod 61, the base 1 is pulled upwards. After the base 1 separates from the ground, it is pushed forward. The base 1 moves via the telescopic rod 61, support 62, and roller 63. After reaching the designated position, the above steps are reversed to bring the base 1 into contact with the ground, and the roller 63 moves upwards and separates from the ground. This increases the contact area between the base 1 and the ground, improving the stability of the equipment. Bottom mud taken from a lake is placed in a bucket 2 and leveled, with the amount reaching five-tenths of the effective height of the bucket 2. First, add the retrieved lake water sample or prepared water sample into the bucket 2 until it reaches the set effective height. Tighten the pull rope 64 and tie it to the bracket 62. Perform the above steps, lower the bracket 62 and tighten it again. When lowering the bracket 62, be careful that the roller 63 does not touch the ground. Fix the cover plate 3 with the pull rope 64, and then drive the mixer 5. The stirring blades on the stirring rod 5 simulate the disturbance of the water body. Observe the condition of the cement mixture inside the bucket 2 through the fixed seat 71. Then, collect water and mud samples at fixed times through the sampling ports 72 at different heights for chemical analysis to obtain the static release process of pollutants in the bottom sediment in this water body, which makes it easy to fix the cover plate 3 and also makes it easy to observe the condition inside the bucket 2.

[0028] Adding water and mud samples to bucket 2 and collecting water and mud samples from sampling port 72 at fixed times for chemical analysis are both existing technologies and will not be described in detail here.

[0029] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test apparatus for simulating the release of pollutants from bottom sediment in a water body, comprising a base (1), a water bucket (2) disposed on the base (1), a cover plate (3) disposed on the water bucket (2), and a stirrer (5) disposed on the cover plate (3), characterized in that: The bottom of the bucket (2) is provided with a discharge pipe (4) for unloading the bucket (2). The base (1) is provided with a support mechanism (6). The support mechanism (6) is used to support the movement of the base (1). The support mechanism (6) includes a telescopic rod (61) provided on the base (1). The extended end of the telescopic rod (61) is connected to a bracket (62). The bracket (62) is equipped with a roller (63). The bracket (62) is provided with a pull rope (64) for fixing the cover plate (3). The bucket (2) is provided with a sampling mechanism (7).

2. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 1, characterized in that: The sampling mechanism (7) is used to extract water and mud samples from the bucket (2).

3. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 2, characterized in that: The sampling mechanism (7) includes a fixed seat (71) that is fixed through the side wall of the water bucket (2), and the fixed seat (71) is provided with an openable sampling port (72).

4. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 1, characterized in that: The telescopic rod (61) has a telescopic length greater than or equal to the radius of the roller (63), and the telescopic rod (61) has at least two sets symmetrically distributed on both sides of the bracket (62).

5. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 1, characterized in that: The bracket (62) has a U-shaped structure, and the bracket (62) and the roller (63) vertically penetrate the base (1).

6. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 1, characterized in that: The roller (63) has at least two components and is evenly distributed on two sets of supports (62).

7. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 1, characterized in that: The top of the pull rope (64) is fixed to the side wall of the cover plate (3), and the bottom of the pull rope (64) is tied to the bracket (62).

8. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 3, characterized in that: The fixing seat (71) is a concave arc-shaped plate structure, and the fixing seat (71) is made of visible material.

9. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 8, characterized in that: The length of the fixed seat (71) is less than the height of the bucket (2), and the arc length of the fixed seat (71) is less than one-third of the arc length of the bucket (2).

10. The experimental apparatus for simulating the release of pollutants from bottom sediments in water bodies according to claim 3, characterized in that: The sampling port (72) is provided with multiple sets of vertically arranged distributions on the fixed base (71), and the sampling port (72) is provided with a valve.

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