Underwater sediment sampling device

Abstract

The utility model discloses an underwater sediment sampling device which comprises a sampling barrel, an electric telescopic rod is arranged at the upper end of the sampling barrel, a piston block is arranged at the output end of the electric telescopic rod, a sealing ring is arranged on the outer diameter face of the piston block, the sealing ring and the inner diameter of the sampling barrel are arranged in a sealing mode, and a plurality of water inlet holes are evenly formed in the upper end of the sampling barrel. A plurality of feeding pipes are arranged on the periphery, close to the lower end, of the sampling barrel, a discharging pipe is arranged at the bottom of the sampling barrel, and closing and opening of the discharging pipe are controlled through a discharging valve. The electric telescopic rod drives the piston block to ascend, the piston block extrudes water in the sampling barrel and discharges the water through the water inlet hole, and the lower part of the piston block is close to a vacuum state at the moment, so that sediments at the water bottom enter the sampling barrel through the feeding pipe, and when the piston block ascends to the upper end in the sampling barrel, the feeding pipe is closed through the electromagnetic valve; sediments in the sampling barrel are prevented from flowing out.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom sediment sampling, in particular to a bottom sediment sampling device. Background Art

[0002] When conducting environmental monitoring or pollution control surveys on water bodies such as oceans, lakes or rivers, it is often necessary to collect underwater soil, silt and other sediments. The accuracy of sediment collection has an important impact on environmental monitoring or pollution control surveys.

[0003] At present, grab bucket mud samplers are commonly used in the prior art to collect underwater soil, silt and other sediments. Grab bucket mud samplers are difficult to operate when used. The grab bucket may not be closed well, causing the material in the grab bucket to slip easily. In addition, a storage device is required after sampling to store the sample, which is not practical. Utility Model Content

[0004] The purpose of the utility model is to provide a bottom sediment sampling device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a bottom sediment sampling device, comprising a sampling tube, an electric telescopic rod is provided at the upper end of the sampling tube, a piston block is provided at the output end of the electric telescopic rod, a sealing ring is provided on the outer diameter surface of the piston block, and the sealing ring and the inner diameter of the sampling tube are sealed;

[0006] A plurality of water inlet holes are evenly arranged at the upper end of the sampling tube;

[0007] A plurality of feed pipes are arranged around the sampling tube near the lower end;

[0008] A discharge pipe is provided at the bottom of the sampling cylinder, and the discharge pipe is controlled to be closed and opened by a discharge valve.

[0009] Preferably, a fixing plate is provided above the sampling barrel, the fixing plate and the sampling barrel are fixedly connected via a plurality of connecting rods, the connecting rods are inclined, and a pull ring is provided on the upper end of the fixing plate.

[0010] Preferably, the feed pipe is L-shaped, and the feed port of the feed pipe is directed downward, and the feed pipe is closed and opened by a solenoid valve.

[0011] Preferably, a material guide cylinder is provided at the bottom of the sampling cylinder, the diameter of the material guide cylinder gradually decreases from top to bottom, and the discharge pipe is provided at the bottom of the material guide cylinder.

[0012] Preferably, a plurality of counterweight support feet are provided at the bottom of the sampling tube, and the counterweight support feet are made of metal.

[0013] Preferably, the lower end of the piston block 3 is chamfered.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can filter out large impurities in the water through a plurality of small water inlet holes, preventing large foreign matter from entering the interior of the sampling tube. Water enters the sampling tube through the water inlet hole at the upper end of the sampling tube, increasing the sinking speed of the sampling tube. The L-shaped feed pipe can make the feed port face downward, which is convenient for absorbing sediments at the bottom of the water.

[0016] The electric telescopic rod drives the piston block to rise, and the piston block squeezes the water inside the sampling cylinder and discharges it through the water inlet hole. At this time, the bottom of the piston block is close to a vacuum state, so the sediment at the bottom of the water enters the sampling cylinder through the feed pipe. When the piston block rises to the upper end of the sampling cylinder, the feed pipe is closed by the solenoid valve to prevent the sediment inside the sampling cylinder from flowing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 It is a front view of the utility model;

[0020] Figure 4 It is a front cross-sectional view of the utility model.

[0021] In the figure: 1. sampling tube; 2. electric telescopic rod; 3. piston block; 4. sealing ring; 5. water inlet hole; 6. feed pipe; 7. discharge pipe; 8. discharge valve; 9. solenoid valve; 10. material guide tube; 11. counterweight support foot; 12. fixing plate; 13. connecting rod; 14. pull ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model provides a technical solution: a bottom sediment sampling device, comprising a sampling tube 1, an electric telescopic rod 2 is provided at the upper end of the sampling tube 1, a piston block 3 is provided at the output end of the electric telescopic rod 2, a sealing ring 4 is provided on the outer diameter surface of the piston block 3, and the sealing ring 4 and the inner diameter of the sampling tube 1 are sealed;

[0024] The upper end of the sampling tube 1 is provided with a plurality of water inlet holes 5;

[0025] A plurality of feed pipes 6 are arranged around the sampling tube 1 near the lower end;

[0026] The feed pipe 6 is L-shaped, and the feed port of the feed pipe 6 faces downward. The feed pipe 6 is controlled to be closed and opened by the solenoid valve 9 .

[0027] The lower end of the piston block 3 is chamfered.

[0028] Among them, the electric telescopic rod 2 and the solenoid valve 9 are powered by a battery (not shown in the figure), the sealing ring 4 makes the interior of the sampling tube 1 airtight and wear-resistant when the piston block 3 moves up and down, and large impurities in the water can be filtered out through a number of small water inlet holes 5 to prevent large foreign objects from entering the interior of the sampling tube 1. The L-shaped feed pipe 6 can make the feed port face downward to facilitate the absorption of sediments on the bottom of the water.

[0029] Before sampling the underwater sediment, the piston block 3 is located at the bottom of the sampling tube 1, and the feeding pipe 6 is in a connected state. When sampling, the sampling tube 1 is placed in water, and water enters the sampling tube 1 through the water inlet hole 5 at the upper end of the sampling tube 1, increasing the sinking speed of the sampling tube 1. When the sampling tube 1 sinks to the bottom of the water, the electric telescopic rod 2 drives the piston block 3 to rise, and the piston block 3 squeezes the water inside the sampling tube 1 and discharges it through the water inlet hole 5. At this time, the bottom of the piston block 3 is close to a vacuum state, so the sediment on the bottom of the water enters the sampling tube 1 through the feeding pipe 6. When the piston block 3 rises to the upper end of the sampling tube 1, the feeding pipe 6 is closed by the solenoid valve 9 to prevent the sediment inside the sampling tube 1 from flowing out, and the water inside the sampling tube 1 is also completely discharged to complete the sampling of the sediment.

[0030] A discharge pipe 7 is provided at the bottom of the sampling tube 1 , and the discharge pipe 7 is controlled to be closed and opened by a discharge valve 8 .

[0031] A material guide cylinder 10 is provided at the bottom of the sampling cylinder 1 , the diameter of which gradually decreases from top to bottom, and a discharge pipe 7 is provided at the bottom of the material guide cylinder 10 .

[0032] The guide cylinder 10 is used for guiding materials during discharge to prevent sediment from accumulating at the bottom of the sampling cylinder 1 . When discharging materials, the discharge valve 8 is opened and the sediment is discharged from the discharge pipe 7 .

[0033] A fixing plate 12 is provided above the sampling tube 1 . The fixing plate 12 and the sampling tube 1 are fixedly connected via a plurality of connecting rods 13 . The connecting rods 13 are inclined. A pull ring 14 is provided at the upper end of the fixing plate 12 .

[0034] A plurality of weighted support legs 11 are provided at the bottom of the sampling tube 1 , and the weighted support legs 11 are made of metal.

[0035] The pull ring 14 is used to connect the pull rope, through which the sampling tube 1 can be taken out and placed. The counterweight support foot 11 can support the sampling tube 1 on the one hand, and can accelerate the sinking of the sampling tube 1 on the other hand, thereby increasing the sampling efficiency.

[0036] The working principle and use process of this utility model:

[0037] The piston block 3 is connected to the pull ring 14, and the sampling tube 1 is put into the water by the pull rope. At this time, the piston block 3 is located at the bottom of the sampling tube 1, and the feeding pipe 6 is in a connected state. After the sampling tube 1 enters the water, the water enters the sampling tube 1 through the water inlet hole 5 at the upper end of the sampling tube 1, increasing the sinking speed of the sampling tube 1. When the sampling tube 1 sinks to the bottom of the water, the electric telescopic rod 2 drives the piston block 3 to rise, and the piston block 3 squeezes the water inside the sampling tube 1 and discharges it through the water inlet hole 5. At this time, the bottom of the piston block 3 is close to a vacuum state, so the sediment on the bottom of the water enters the sampling tube 1 through the feeding pipe 6. When the piston block 3 rises to the upper end of the sampling tube 1, the feeding pipe 6 is closed by the electromagnetic valve 9 to prevent the sediment inside the sampling tube 1 from flowing out. The water inside the sampling tube 1 is also completely discharged, completing the sampling of the sediment, and then the sampling tube 1 is pulled out by the pull rope. When discharging is required, the discharge valve 8 is opened, and the sediment is discharged from the discharge pipe 7 through the guide tube 10.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bottom sediment sampling device, comprising a sampling tube (1), characterized in that: The upper end of the sampling tube (1) is provided with an electric telescopic rod (2), the output end of the electric telescopic rod (2) is provided with a piston block (3), the outer diameter surface of the piston block (3) is provided with a sealing ring (4), and the sealing ring (4) and the inner diameter of the sampling tube (1) are sealed; The upper end of the sampling tube (1) is evenly provided with a plurality of water inlet holes (5); A plurality of feed pipes (6) are provided around the sampling tube (1) near the lower end; A discharge pipe (7) is provided at the bottom of the sampling tube (1), and the discharge pipe (7) is controlled to be closed and opened by a discharge valve (8).

2. A bottom sediment sampling device according to claim 1, characterized in that: A fixing plate (12) is provided above the sampling tube (1); the fixing plate (12) and the sampling tube (1) are fixedly connected via a plurality of connecting rods (13); the connecting rods (13) are arranged at an angle; and a pull ring (14) is provided at the upper end of the fixing plate (12).

3. A bottom sediment sampling device according to claim 1, characterized in that: The feed pipe (6) is L-shaped, and the feed port of the feed pipe (6) is directed downward. The feed pipe (6) is controlled to be closed and opened by a solenoid valve (9).

4. The bottom sediment sampling device according to claim 1, characterized in that: A material guide cylinder (10) is provided at the bottom of the sampling cylinder (1), the diameter of the material guide cylinder (10) gradually decreases from top to bottom, and the discharge pipe (7) is provided at the bottom of the material guide cylinder (10).

5. The underwater sediment sampling device according to claim 1, characterized in that: A plurality of counterweight support feet (11) are provided at the bottom of the sampling tube (1), and the counterweight support feet (11) are made of metal.

6. The bottom sediment sampling device according to claim 1, characterized in that: The lower end of the piston block (3) is chamfered.

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