CN220322783U - Water sample depth setting collection device - Google Patents

Abstract

The utility model provides a water sample depth setting acquisition device which comprises an outer shell, wherein the top of the outer shell is provided with a connecting rod and a through hole for a control rope to pass through, the lower end of the control rope is connected with an inner shell, the inner shell is arranged in the outer shell, the side walls of the outer shell and the inner shell are both provided with a plurality of water inlets, a water collecting cylinder is arranged in the inner shell, the upper end of the water collecting cylinder is provided with a sealing rubber plug, the atmospheric pressure in the water collecting cylinder is smaller than the external atmospheric pressure, a sampling needle is inserted into the sealing rubber plug, the sampling needle is of a tubular structure, and the upper end of the inner shell is provided with a sliding hole for the sampling needle to pass through. The water sampling device realizes depth-fixed water taking, and simultaneously sampled water samples are not exposed in the air, so that the sampling requirement is met.

Description

Water sample depth setting collection device

Technical Field

The utility model relates to the field of water environment monitoring, in particular to a water sample depth setting acquisition device.

Background

The accurate and efficient extraction of various water samples is an important premise for developing researches such as water resource cyclic evolution, at present, water sample collection mostly depends on water pumping or water lifting barrel collection, for example, a water sample collection device suitable for collecting multi-area water samples is disclosed in CN204612982U, water sampling pipes are adopted for lifting and lowering to collect water, but the collected deep water samples face the potential risk of mixing surface water samples, and meanwhile, the water samples are easily exposed in the air after being taken out, so that the requirements of scientific researches cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a water sample depth setting acquisition device, which realizes depth setting water taking, and simultaneously, the sampled water sample is not exposed in the air, so that the sampling requirement is met.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a water sample depth setting collection system, includes the shell body, the shell body top is equipped with the connecting rod and supplies the through-hole that control rope passed, control rope lower extreme and interior casing are connected, interior casing sets up in the shell body, shell body and interior casing lateral wall all are equipped with a plurality of inlet openings, be equipped with a catchment section of thick bamboo in the interior casing, catchment section of thick bamboo upper end is equipped with sealed plug, the atmospheric pressure is less than external atmospheric pressure in the catchment section of thick bamboo, in the sampling needle inserts sealed plug, the sampling needle is tubular structure, interior casing upper end is equipped with the sliding hole that supplies the sampling needle to pass.

In a preferred scheme, scale marks are arranged on the control rope.

In the preferred scheme, a plurality of locating rings are distributed along the length of the connecting rod outside, and the control rope is arranged in the locating rings in a penetrating mode.

In the preferred scheme, outer casing and inner casing top are equipped with outer apron and inner cover plate respectively, pass through screw connection between outer casing and the inner cover plate and the inner casing.

In the preferred scheme, the sealing rubber plug is of a conical structure with a large upper part and a small lower part.

According to the water sample depth setting acquisition device provided by the utility model, after the water sample depth setting acquisition device is placed at a target horizon through the connecting rod, the inner shell is lifted by pulling the control rope, the sampling needle continuously pulls the control rope after reaching the top surface in the outer shell, the sampling needle passes through the sealing rubber plug under the reaction force, so that the sampling needle enters the water collecting cylinder, the atmospheric pressure in the water collecting cylinder is smaller than the external atmospheric pressure, and water enters the water collecting cylinder through the sampling needle under the action of pressure difference, so that the purpose of accurately obtaining a water sample depth setting is realized. Meanwhile, the sampled water sample is not exposed in the air, the defect that the water sample is easy to contact surface water and air pollution is overcome,

drawings

The utility model is further described below with reference to the accompanying drawings and examples of implementation:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

in the figure: the device comprises an outer shell 1, a connecting rod 2, a control rope 3, an inner shell 4, a water inlet hole 5, a water collecting barrel 6, a sealing rubber plug 7, a sampling needle 8, a positioning ring 9, an outer cover plate 101, a sliding hole 401 and an inner cover plate 402.

Detailed Description

As shown in fig. 1, the water sample depth setting collection device comprises an outer shell 1, wherein the outer shell 1 is of a cylindrical structure, a connecting rod 2 and a through hole for a control rope 3 to pass through are formed in the top of the outer shell 1, the connecting rod 2 and the control rope 3 are arranged in parallel, and the connecting rod 2 and the control rope 3 ascend or descend synchronously. When the connecting rod is specifically used, the top of the outer shell 1 can be provided with a thread seat, and the thread seat is provided with internal threads, so that the connecting rod 2 can be conveniently in threaded connection.

The control rope 3 lower extreme is connected with inner shell 4 upper end, and inner shell 4 sets up in shell 1, and shell 1 and inner shell 4 are metal material, and shell 1 diameter is slightly greater than the diameter of inner shell 4, also can set up certain counter weight with inner shell 4, prevents that it from floating in water. The side walls of the outer shell 1 and the inner shell 4 are respectively provided with a plurality of water inlets 5. The inner shell 4 is internally provided with the water collecting cylinder 6, the water collecting cylinder 6 is an organic glass tube with an opening at the upper end, the upper end of the water collecting cylinder 6 is provided with the sealing rubber plug 7, the sealing rubber plug 7 is made of rubber, the sealing rubber plug 7 is of a conical structure with a large upper part and a small lower part, the water collecting cylinder 6 can be sealed, and meanwhile the sealing rubber plug 7 is prevented from falling into the water collecting cylinder 6. The atmospheric pressure in the water collection cylinder 6 is smaller than the external atmospheric pressure, so that a near vacuum cavity is formed, and water conveniently enters the water collection cylinder 6 during sampling. When the water collecting tube is specifically used, the atmospheric pressure in the water collecting tube 6 is pumped to be lower than 0.2 atmosphere by an air pump, a metal probe and the like, and then the water collecting tube is blocked by a sealing rubber plug 7.

The sampling needle 8 is inserted into the sealing rubber plug 7, the sampling needle 8 is of a tubular structure, the upper end and the lower end of the sampling needle 8 are respectively provided with a water inlet and a water outlet, the lower end of the sampling needle 8 is of a needle-shaped tip, the sampling needle is convenient to insert into the sealing rubber plug 7, and when the sampling needle is used, the sampling needle 8 cannot penetrate through the sealing rubber plug 7, and when the sampling needle is inserted into the sealing rubber plug 7, the sampling needle is ensured to be parallel to the wall tube surface of the water collecting tube 6 as much as possible.

The upper end of the inner shell 4 is provided with a sliding hole 401 for the sampling needle 8 to pass through, and the upper end of the sampling needle 8 passes out and is arranged outside the inner shell 4.

Preferably, scale marks are arranged on the control rope 3. The depth of lowering of the outer casing 1 is conveniently observed.

Preferably, a plurality of positioning rings 9 are distributed on the outer side of the connecting rod 2 along the length of the connecting rod, and the control rope 3 is arranged in the positioning rings 9 in a penetrating mode. Through setting up holding ring 9, guarantee that control rope 3 hugs closely connecting rod 2 and sets up, make things convenient for control rope 3 and connecting rod 2 to descend in step.

Preferably, the top of the outer casing 1 and the top of the inner casing 4 are respectively provided with an outer cover plate 101 and an inner cover plate 402, and the outer cover plate 101 is connected with the outer casing 1 and the inner cover plate 402 is connected with the inner casing 4 through screws, so that the outer casing 1 and the inner casing 4 are conveniently opened, the inner casing 4 is conveniently placed in the outer casing 4, and the water collecting barrel 6 is conveniently placed in the inner casing 4. In particular use, the bottoms of the outer housing 1 and the inner housing 4 may also be provided as a detachable structure.

The working process is as follows:

according to the depth of the water body to be sampled, a drill rod and the like are used as the connecting rod 2 to be combined with the outer shell 1, and if the sampling depth is deeper, a drilling machine, a crane and the like are required to be matched for use. When the sampling device is used, the sampling device is placed in water bodies such as lakes or underground wells through the connecting rod 2, the connecting rod 2 and the control rope 3 are kept to be synchronously lowered during placement, after the water reaches a target level, the water enters the outer shell 1 and the inner shell 4 from the water inlet 5, the control rope 3 is pulled upwards to enable the inner shell 4 to drive the water collecting cylinder 6 to ascend, the sampling needle 8 synchronously moves, the control rope 3 is pulled continuously after reaching the inner top surface of the outer shell 1, the sampling needle 8 passes through the sealing rubber plug 7 under the reaction force to enter the water collecting cylinder 6, the atmospheric pressure in the water collecting cylinder 6 is smaller than the external atmospheric pressure, the water enters the water collecting cylinder 6 through the sampling needle 8 under the action of pressure difference, and the water stands for a few minutes, so that the whole device is lifted through the connecting rod 2.

The water sample depth setting acquisition device overcomes the defect that a water sample is easy to contact surface water and air is polluted, and achieves the purpose of accurately obtaining a water sample in depth setting.

Claims (5)

1. A water sample depth setting collection system, its characterized in that: including shell body (1), shell body (1) top is equipped with connecting rod (2) and supplies the through-hole that control rope (3) passed, control rope (3) lower extreme is connected with interior casing (4), interior casing (4) set up in shell body (1), shell body (1) and interior casing (4) lateral wall all are equipped with a plurality of inlet openings (5), be equipped with water collection section of thick bamboo (6) in interior casing (4), water collection section of thick bamboo (6) upper end is equipped with sealed plug (7), atmospheric pressure is less than external atmospheric pressure in water collection section of thick bamboo (6), in sample needle (8) insert sealed plug (7), sample needle (8) are tubular structure, interior casing (4) upper end is equipped with slide hole (401) that supply sample needle (8) passed.

2. The water sample depth setting collection device according to claim 1, wherein: and scale marks are arranged on the control rope (3).

3. The water sample depth setting collection device according to claim 1, wherein: the outer side of the connecting rod (2) is provided with a plurality of positioning rings (9) along the length of the connecting rod, and the control rope (3) is arranged in the positioning rings (9) in a penetrating mode.

4. The water sample depth setting collection device according to claim 1, wherein: the top of the outer shell (1) and the top of the inner shell (4) are respectively provided with an outer cover plate (101) and an inner cover plate (402), and the outer cover plate (101) is connected with the outer shell (1) and the inner cover plate (402) and the inner shell (4) through screws.

5. The water sample depth setting collection device according to claim 1, wherein: the sealing rubber plug (7) is of a conical structure with a large upper part and a small lower part.