CN110873658A

CN110873658A - Multipoint synchronous water sampling device

Info

Publication number: CN110873658A
Application number: CN201911260574.1A
Authority: CN
Inventors: 孙志林; 郑浩磊; 郑榕; 孙立霞
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-03-10
Also published as: WO2021115114A1

Abstract

The invention discloses a multipoint synchronous water sampling device which comprises a stainless steel rod, a sampling pipe, an automatic control turntable, a miniature water pump, a water pumping conduit, a water taking conduit, a sampling bottle and a bracket. Six identical circular tubes are arranged in the stainless steel bar, and each circular tube is tangent to the outer wall of the stainless steel bar; the sampling pipes are respectively embedded in the six round pipes, the upper end of the stainless steel rod is connected with the automatic control turntable, and the miniature water pump is arranged on the automatic control turntable; the water pumping conduit is connected with a water inlet of the micro water pump; the water taking conduit is connected with a water outlet of the miniature water pump; the support is provided with six sampling bottles which are uniformly distributed on the surface, the support is of a circular ring structure, four horizontal supporting rods are arranged on the side surface of the stainless steel rod, and the center of the support penetrates through the stainless steel rod and is fixed by the supporting rods. The device can realize automatic control and multipoint synchronous sampling of the river flow vertical line, enriches water and sand measuring means, and has the characteristics of low manufacturing cost, simple operation and the like.

Description

Multipoint synchronous water sampling device

Technical Field

The invention belongs to the field of hydrological tests, and particularly relates to a multipoint synchronous water sampling device.

Background

The silt in the natural river is non-uniform sand, and the vertical distribution of the suspended load sand content and gradation is an important subject for researching river dynamics and silt movement. In order to research the vertical distribution rule of suspended load sand content and gradation, a large amount of multi-point sand-containing water samples of the river vertical lines need to be collected. In most hydrological stations in China, the sampling device and the observation facility limit, the single-point depth accumulation method is a conventional sampling and sand measuring method, synchronous multi-point sampling cannot be realized, and the observation result has limitation. In addition, the traditional river layered sampling method needs to reach the position of the vertical line by means of a ship and then samples layer by layer, a large amount of manpower and material resources are consumed, and rivers in mountainous areas are difficult to realize.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a multipoint synchronous water taking device which can realize multipoint synchronous water taking in a river.

The purpose of the invention is realized by the following technical scheme: a multi-point synchronous water sampling device mainly comprises a stainless steel rod, a sampling tube, a rotary disc, a miniature water pump, a water pumping conduit, a water taking conduit, a sampling bottle, a support, a motor and a rotating motor. Six circular tubes are arranged in the stainless steel bar, and each circular tube is tangent to the outer wall of the stainless steel bar; the sampling tubes are respectively embedded in the six round tubes, a ball valve is arranged at the water inlet of each sampling tube, the ball valves in the adjacent sampling tubes are connected in pairs through connecting rods, the tail ends of the connecting rods are connected with a motor, and the motor is fixed on the outer side of the stainless steel rod. The upper end of the stainless steel rod is connected with the turntable, the miniature water pump is arranged on the turntable, the turntable is connected with the rotating motor, and the rotating motor is arranged in the turntable; the water pumping conduit is connected with a water inlet of the micro water pump; the water taking conduit is connected with a water outlet of the miniature water pump; the support is provided with six sampling bottles which are uniformly distributed on the surface, the support is of a circular ring structure, four horizontal supporting rods are arranged on the side surface of the stainless steel rod, and the center of the support penetrates through the stainless steel rod and is fixed by the supporting rods.

Furthermore, the water pumping conduit is connected with the sampling tube through a male-female interface.

Further, the water outlet of the water taking conduit is positioned above the opening of the sampling bottle.

Furthermore, the heights of the water inlets of the six sampling pipes from the water surface are respectively 0.2m, 0.2H, 0.4H, 0.6H and 0.8H, H-0.2m, wherein H is the depth of water at the sampling position.

Compared with the prior art, the invention has the following beneficial effects: can accomplish six layering of river plumb line and contain husky water sample collections in step, and operating personnel need not to go into water, need not with the help of survey ship, increases substantially river and contains husky water sample sampling efficiency, reduces sampling operating cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a stainless steel rod and a sampling tube of the present invention;

FIG. 3 is a schematic view of the ball valve linkage of the present invention;

wherein, 1-stainless steel bar, 2-sampling tube, 3-rotary table, 4-micro water pump, 5-water pumping conduit, 6-water taking conduit, 7-sampling bottle, 8-support.

Detailed Description

The invention is further described with reference to the accompanying drawings.

Referring to fig. 1, a schematic structural diagram of a multipoint synchronous water sampling device of the present invention mainly includes a stainless steel rod 1, a sampling tube 2, a turntable 3, a micro water pump 4, a water pumping conduit 5, a water intake conduit 6, a sampling bottle 7 and a support 8. Six circular tubes are arranged in the stainless steel rod 1, and each circular tube is tangent to the outer wall of the stainless steel rod 1, so that the occupied cross section of the stainless steel rod can be minimized by the tangency, and the turntable can be conveniently installed; the sampling pipes 2 are respectively embedded in six round pipes, and the heights of the water inlets of the six sampling pipes 2 from the water surface are respectively 0.2m, 0.2H, 0.4H, 0.6H and 0.8H, H-0.2m, wherein H is the depth of water at the sampling position, as shown in fig. 2. The water inlet of each sampling tube 2 is provided with a ball valve, as shown in fig. 3, technicians in the field can control the sampling tubes 2 to open and close through the ball valves to ensure that water samples at specified positions can be obtained, the ball valves in the adjacent sampling tubes 2 are connected in pairs through connecting rods, the tail ends of the connecting rods are connected with a motor, the motor is fixed on the outer side of the stainless steel rod 1, and the lifting and descending of the connecting rods are controlled. The upper end of the stainless steel rod 1 is connected with the rotary table 3, the miniature water pump 4 is arranged on the rotary table 3, the rotary table 3 is connected with the rotating motor, the rotating motor is arranged in the rotary table 3, and the motor shaft drives the rotary table to rotate; the water pumping pipe 5 is connected with the water inlet of the miniature water pump 4, the water pumping pipe 5 is connected with the sampling pipe 2 through male and female interfaces, automatic control separation and connection can be achieved, the model of the miniature water pump 4 is 18WG-18, after the device is powered on, when the water pumping pipe 5 is connected with the sampling pipe 2, the miniature water pump starts to work, and when the water pumping pipe 5 is separated from the sampling pipe 2, the miniature water pump stops working. The water taking conduit 6 is connected with the water outlet of the miniature water pump 4; six evenly distributed sampling bottles 7 are arranged on the surface of the support 8, and the water outlet of the water taking guide pipe 6 is positioned above the opening of the sampling bottles 7 and used for sampling and collecting. The support 8 is of a circular ring structure, four horizontal supporting rods are arranged on the side face of the stainless steel rod 1, and the center of the support 8 penetrates through the stainless steel rod 1 and is fixed by the supporting rods.

The working process of the invention is as follows: before the stainless steel rod 1 enters water, the ball valves at the water inlet of the sampling pipe 2 are all in a closed state, at the moment, the water pumping guide pipe 5 is connected with the sampling pipe 2, and the stainless steel rod 1 is fixed on a vertical line of a river needing sampling through a hydrological cableway. The sampling begins, the device circular telegram, the motor work in the stainless steel stick 1 outside drives the connecting rod and descends, all ball valves that are located sampling tube 2 water inlet department are all opened, miniature suction pump 4 begins work, the water sample passes through sampling tube 2 and gets into pumping conduit 5, rethread water intaking conduit 6 flows into in sampling bottle 7, after the certain water yield of inflow in sampling bottle 7, miniature suction pump 4 outage stop work, motor control pumping conduit 5 lifts and separates with sampling tube 2, accomplish a little sampling. Then the rotating motor works, the automatic control rotary disc 3 drives the water pumping duct 5 and the water intake duct 6 to rotate clockwise by 30 degrees and stay for 5 seconds, and the step is to discharge the residual water in the ducts. The self-controlled rotary disc is then rotated again by 30 deg., and the water-drawing duct 5 is connected with the next sampling tube 2, so that the next sampling is completed. After six sampling points are completed in sequence, the automatic control rotary disc rotates clockwise by 30 degrees, the stainless steel rod 1 is taken out of the water surface through the hydrological cableway and conveyed to the shore, the connecting rod rises, all ball valves at the water inlet of the sampling pipe 2 are closed, the equipment is powered off, six sampling bottles are taken down, and one vertical line sampling is completed.

Claims

1. The utility model provides a multiple spot is water sampling device in step which characterized in that mainly includes stainless steel stick (1), sampling tube (2), carousel (3), miniature suction pump (4), water pumping pipe (5), water intaking pipe (6), sampling bottle (7), support (8), motor and rotating electrical machines. Six circular tubes are arranged in the stainless steel rod (1), and each circular tube is tangent to the outer wall of the stainless steel rod (1); sampling tube (2) inlay respectively in six pipe, the water inlet department of every sampling tube (2) is equipped with the ball valve, and the ball valve in adjacent sampling tube (2) passes through two liang of connections of connecting rod, and the connecting rod end links to each other with the motor, and the motor is fixed in stainless steel stick (1) outside. The upper end of the stainless steel rod (1) is connected with the turntable (3), the miniature water pump (4) is arranged on the turntable (3), the turntable (3) is connected with the rotating motor, and the rotating motor is arranged in the turntable; the water pumping conduit (5) is connected with a water inlet of the micro water pump (4); the water taking conduit (6) is connected with a water outlet of the micro water pump (4); support (8) are equipped with six evenly distributed's sample bottle (7) on the surface, support (8) are the ring structure, are equipped with four horizontal supporting rods on the side of stainless steel stick (1), and it is fixed by branch that stainless steel stick (1) is passed at support (8) center.

2. The multipoint synchronous water sampling device according to claim 1, characterized in that the water pumping conduit (5) is connected with the sampling tube (2) through a male-female interface.

3. The multipoint synchronous water sampling device according to claim 1, characterized in that the water outlet of the water intake conduit (6) is located above the opening of the sampling bottle (7).

4. The multipoint synchronous water sampling device according to claim 1, wherein the heights of the water inlets of the six sampling pipes (2) from the water surface are 0.2m, 0.2H, 0.4H, 0.6H and 0.8H, H-0.2m respectively, wherein H is the water depth at the sampling position.