WO2022040835A1

WO2022040835A1 - Field water sampling device

Info

Publication number: WO2022040835A1
Application number: PCT/CN2020/110684
Authority: WO
Inventors: 张婕
Original assignee: 南京溧水高新创业投资管理有限公司
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2022-03-03

Abstract

A field water sampling device, comprising a sampling rod (1), a tubular body (2), and a sampling tube (3). The sampling rod (1) consists of a first rotating rod (11), a second rotating rod, and a rotating shaft (12); the first rotating rod (11) is connected to the second rotating rod by means of the rotating shaft (12), the first rotating rod (11) and the second rotating rod can perform relative motion around the rotating rod (12), and a fixing button (13) is connected to a piston rod (21); the tubular body (2) is a hollow cylindrical tubular body (2), the piston rod (21) is arranged inside the tubular body (2), and the tail end of the piston rod (21) is connected to a piston (27); an one-way valve plate (22), a sealing ring (23), a suction tube (24), and a fixed plate (25) are sequentially arranged at the tail end of the tubular body (2); the sampling tube (3) is connected to the tail end of the tubular body (2), and a counterweight ring (31) is arranged at the lower half of the sampling tube (3); the sampling tube (3) is a water suction head (32), and a filter screen (33) is connected into an inner cavity of the water suction head (32). The sampling device does not require a power device, and is simple in structure, small in size and capable of sampling river water deeply.

Description

A field water quality sampling device

technical field

The application belongs to the technical field of sampling devices, and in particular relates to a field water quality sampling device.

Background technique

Environmental monitoring is to observe, measure, analyze and analyze one or more environmental elements or indicators intermittently or continuously for a specific purpose, according to a pre-designed time and space, by means of comparable environmental information and data collection methods. In the process of environmental impact, environmental monitoring is the basis of environmental protection work and the basis for environmental legislation, environmental planning and environmental decision-making. Environmental monitoring is one of the important means of environmental management.

River water quality testing is an important part of environmental monitoring. In traditional water quality testing, inspectors generally arrive at a certain location on the river by boat, and then inject river water into the testing pot. This sampling method has great limitations and low practicability. . For occasions where water can be drawn directly from rivers, streams, lakes, etc., the water sample bottle can be immersed in the water by hand, or picked up from a suitable container. When sampling from places such as bridges, a bucket with a rope or a water sample bottle with a sinker can be thrown into the water to draw water quality samples for water quality testing. Although surface water sampling should be collected from 10 to 15 cm below the water surface, it is difficult to sample directly from lakes or slow-flowing rivers. Sampling with buckets, etc., is also mixed with water from the water surface to a depth of several tens of centimeters. In practice, this level is sufficient. However, in this case, care should be taken not to mix substances floating on the water surface.

In the case of slow flow of river water, although the method described above can be used for sampling, in fact, it is often difficult to take a certain depth of water because the sampler is washed. Spring water and well water can be directly sampled at the water spout for self-spraying spring water. When it is not from the fountain, the water stagnant in the suction pipe needs to be discharged until it is considered that it has been completely replaced by new water, and then sampling is carried out.

However, at present, the simple sampling equipment cannot sink to the deeper river water position, and cannot sample the deeper river water. The equipment that can sink to the depths for sampling generally requires external power equipment for extraction, and when going deep into the jungle for sampling, the transportation is inconvenient and can only be carried by manpower, which is difficult to carry.

Application content

In order to solve the problems existing in the above-mentioned background technology, a field water quality sampling device is provided, which does not require an electric device, has a simple structure, and is small in shape, and can go deep into river water for sampling.

This application is implemented like this:

A field water quality sampling device includes a sampling rod, a pipe body and a sampling pipe; the sampling rod is composed of a first rotating rod, a second rotating rod and a rotating shaft; the first rotating rod and the second rotating rod are connected by a rotating shaft, and the first rotating rod and the second rotating rod can carry out relative movement around the rotating shaft, and the fixing button is connected with the piston rod; the pipe body is an inner hollow cylindrical pipe body, the interior of the pipe body is provided with a piston rod, and the end of the piston rod is connected with the piston; The end of the pipe body is sequentially provided with a one-way valve sheet, a sealing ring, a suction pipe, a fixed plate and a filter screen; the sampling pipe is connected with the end of the pipe body, and the upper and lower half ends of the sampling pipe are provided with weight rings; the sampling pipe is a suction head, and the A filter screen is connected to the inner cavity of the suction head.

Further, the cavity of the tube body is a smooth cylindrical structure, and the inner diameter of any cross section of the tube body is the same.

Further, the sampling tube is a soft material sampling tube.

Further, the sealing ring is a rubber material sealing ring.

Further, the water suction head has a conical structure.

Further, the tube body is made of borosilicate glass.

Further, scale lines are provided on the outer wall of the tube.

Further, there are multiple counterweight rings, and the counterweight rings are iron ring counterweight rings.

Further, the outer surface of the piston is provided with sealing rubber.

The beneficial effects brought by this application are:

1. The structure of the device is very simple and compact, and any small bag can be easily inserted into it. Reduces the burden of carrying heavy sampling equipment. Especially in the deep mountains and jungles, there is a lack of transportation and can only be carried by manpower. The lightweight size can reduce unnecessary physical exertion.

2. Many times, people will take samples directly from test tubes. If it is necessary to take water samples from the depths of the river, it is easy to cause danger and the depth is not enough. With this equipment, the depth of sampling can be controlled by changing the length of the sampling tube and the quality of the counterweight ring, and the operation is simple and requires no training.

Description of drawings

Fig. 1 is the structural representation of this application;

Among them, 1-sampling rod; 11-first rotating rod; 12-rotating shaft; 13-fixing button; 2-pipe body; 21-piston rod; 22-check valve plate; 23-sealing ring; 24-suction pipe; 25-fixed plate; 26-rubber sheet; 27-piston; 3-sampling tube; 31-weight ring; 32-suction head; 33-filter.

detailed description

The present application will be further described below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

A field water quality sampling device includes a sampling rod 1, a pipe body 2 and a sampling pipe 3; the sampling rod 1 is composed of a first rotating rod 11, a second rotating rod and a rotating shaft 12; the first rotating rod 11 and the second rotating rod pass through The rotating shaft 12 is connected, the first rotating rod 11 and the second rotating rod can perform relative movement around the rotating shaft 12, and the fixing button 13 is connected with the rod 21 of the piston 27; the pipe body 2 is an inner hollow cylindrical pipe body 2, and the The pipe body 2 is provided with a piston 27 rod 21, and the end of the piston 27 rod 21 is connected to the piston 27; The sampling tube 3 is connected with the end of the tube body 2, and the upper and lower half ends of the sampling tube 3 are provided with weight rings 31; The cavity of the tube body 2 is a smooth cylindrical structure, and the inner diameter of any cross section of the tube body 2 is the same. The sampling tube 3 is a soft material sampling tube 3 . The sealing ring 23 is a rubber sealing ring 23 . The suction head 32 has a conical structure. The tube body 2 is made of borosilicate glass. The outer wall of the pipe body 2 is provided with scale lines. There are multiple weight rings 31 , and the weight rings 31 are iron ring weight rings 31 . The outer surface of the piston 27 is provided with sealing rubber.

Way of working:

After the user arrives in the field, he first selects a sampling tube 3 of a suitable length, installs it on the front end of the tube body 2 , and then attaches the weight ring 31 to the sampling tube 3 . The sampling tube 3 can be configured as a hose, and the weight ring 31 is preferably an iron ring structure. By calculating the depth of the sampled water quality, put a weight ring 31 of suitable quality on the sampling pipe 3, and observe that the sampling pipe 3 penetrates to a suitable depth. By pressing the relative movement of the first rotating rod 11 and the second rotating rod, all the air in the pipe body 2 is exhausted first. Then, continue to control the relative movement of the first rotating rod 11 and the second rotating rod, and control the rod 27 of the piston 27 to move the piston 27 from the inside of the pipe to the end of the pipe body 2 . When the tube body 2 is extracted, the relative movement of the rotating rod applies an external force to the rod 21 of the piston 27 to force the air volume in the tube to increase, so that the pressure in the needle tube becomes smaller, and a pressure difference is formed between the external atmospheric pressure. This pressure difference acts on the liquid surface to form a pressure difference, and the pressure direction points to the inside of the pipe body 2 . The liquid enters the tube body 2 under this pressure. The sampling water body enters the sampling pipe 3 through the water suction head 32 and the filter screen 33 and continues to pass through the one-way valve plate 22 , the sealing ring 23 , the suction pipe 24 and the fixing plate 25 ; and enters the pipe body 2 . At this time, the field water body enters the inside of the tube body 2, and the sampling is completed.

The structure of the device is very simple, and the body is small, and any small bag can be easily inserted. Reduces the burden of carrying heavy sampling equipment. Especially in the deep mountains and jungles, there is a lack of transportation and can only be carried by manpower. The lightweight size can reduce unnecessary physical exertion.

Many times, people will take samples directly from the test tube. If it is necessary to take water samples from the depths of the river, it is easy to cause danger and the depth is not enough. With this equipment, the depth of sampling can be controlled by changing the length of the sampling tube and the quality of the counterweight ring, and the operation is simple and requires no training.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation are intended to encompass non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

The above are only the preferred embodiments of the present application. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of this application.

Claims

A field water quality sampling device, comprising a sampling rod (1), a pipe body (2) and a sampling pipe (3); characterized in that the sampling rod (1) is composed of a first rotating rod (11) and a second rotating rod and the rotating shaft (12); the first rotating rod (11) and the second rotating rod are connected by the rotating shaft (12), and the first rotating rod (11) and the second rotating rod can move relatively around the rotating shaft (12), and the fixing button (13) is connected with the piston rod (21); the pipe body (2) is a hollow cylindrical pipe body (2), and a piston rod (21) is provided inside the pipe body (2), and the piston rod ( 21) The end is connected with the piston (27); the end of the pipe body (2) is sequentially provided with a one-way valve plate (22), a sealing ring (23), a suction pipe (24), a fixing plate (25) and a filter screen (33) ; The sampling pipe (3) is connected with the end of the pipe body (2), and the upper and lower half ends of the sampling pipe (3) are provided with counterweight rings (31); the sampling pipe (3) is a suction head (32), and the suction head (32) ) inner cavity is connected with a filter screen (33).
The field water quality sampling device according to claim 1, wherein the cavity of the pipe body (2) is a smooth cylindrical structure, and the inner diameter of any cross section of the pipe body (2) is the same.
A field water quality sampling device according to claim 1, characterized in that, the sampling pipe (3) is a soft material sampling pipe (3).
The field water quality sampling device according to claim 1, wherein the sealing ring (23) is a rubber sealing ring (23).
The field water quality sampling device according to claim 1, wherein the water suction head (32) is a conical structure.
A field water quality sampling device according to claim 1, characterized in that, the pipe body (2) is made of high borosilicate glass.
A field water quality sampling device according to claim 1, characterized in that, the outer wall of the pipe body (2) is provided with a scale line.
The field water quality sampling device according to claim 1, characterized in that, there are a plurality of said counterweight rings (31), and the counterweight rings (31) are iron ring counterweight rings (31).
A field water quality sampling device according to claim 1, characterized in that, a sealing rubber is provided on the outer side of the piston (27).