CN216669420U

CN216669420U - External environment water sample collection system

Info

Publication number: CN216669420U
Application number: CN202123362628.0U
Authority: CN
Inventors: 安淑一; 方兴; 王艳
Original assignee: Liaoning Provincial Center For Disease Control And Prevention
Current assignee: Liaoning Provincial Center For Disease Control And Prevention
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-03
Anticipated expiration: 2031-12-27

Abstract

The utility model provides an external environment water sample collecting device which comprises a body, wherein a sliding cavity is arranged in the body, and a piston is connected in the sliding cavity in a sliding manner; a water channel is formed in the inner wall of the sliding cavity, a water filtering groove is formed in the outer side face of the body, a reverse osmosis membrane is fixedly connected in the water filtering groove and divides the water filtering groove into an upper cavity and a lower cavity, the water channel is communicated with the sliding cavity and the lower cavity, a collecting pipe is arranged at the front end of the body and is provided with a first valve, and the collecting pipe is communicated with the sliding cavity; the water filtering tank is detachably and hermetically connected with a sealing cover, a water discharging pipe is arranged on the sealing cover, a second valve is arranged on the water discharging pipe, and the water discharging pipe is communicated with the upper cavity. The utility model can concentrate the collected sample, improve the concentration of the detected substance or organism, facilitate the subsequent detection and ensure the accuracy of the subsequent detection.

Description

External environment water sample collection system

Technical Field

The utility model relates to the field of sample collection, in particular to an external environment water sample collection device.

Background

Water is a source of life, people can not boil water in life and production activities, and the quality of water in an external environment is closely related to the health of the people. The purpose of monitoring the external environment water quality is mainly to consider the influence on human health, the influence on the water quality comprises physical indexes, chemical indexes and microorganism indexes, and the detection rate is extremely low due to low content of partial indexes, so that a sample collector is indispensable for water quality detection.

The existing sample collector usually collects and stores water. But the aquatic of external environment, its microorganism or organic molecule's concentration is low, and simple water sample collection can be unfavorable for the laboratory to the detection of quality of water, makes certain material or biological concentration detection error great even leak hunting easily, from this, provides one kind and can conveniently detect, reduces detection error's water sample collection system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external environment water sample collecting device, which can concentrate collected samples, improve the concentration of detected substances or organisms, facilitate subsequent detection and ensure the accuracy of the subsequent detection aiming at the defects of the prior art.

The embodiment of the utility model is realized by the following technical scheme: an external environment water sample collecting device comprises a body, wherein a sliding cavity is arranged in the body, and a piston is connected in the sliding cavity in a sliding manner; a water channel is formed in the inner wall of the sliding cavity, a water filtering groove is formed in the outer side face of the body, a reverse osmosis membrane is fixedly connected in the water filtering groove and divides the water filtering groove into an upper cavity and a lower cavity, the water channel is communicated with the sliding cavity and the lower cavity, a collecting pipe is arranged at the front end of the body and is provided with a first valve, and the collecting pipe is communicated with the sliding cavity; the water filtering tank is detachably and hermetically connected with a sealing cover, a water discharging pipe is arranged on the sealing cover, a second valve is arranged on the water discharging pipe, and the water discharging pipe is communicated with the upper cavity.

Furthermore, the rear end face of the piston is provided with a connecting block, the connecting block is connected with a screw rod in a rotating mode, and the screw rod penetrates through the rear end of the body and is connected with the body in a threaded mode.

Furthermore, a rotating handle is arranged on the screw rod.

Furthermore, both ends of the reverse osmosis membrane are provided with protective nets.

The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:

1. according to the utility model, the piston is arranged, so that the device can extract a water sample to the sliding cavity like an injector, and the purpose of sample collection is achieved;

2. according to the utility model, by arranging the reverse osmosis membrane, when the piston pushes and concentrates the collected sample, the reverse osmosis membrane can enable water molecules to pass through and isolate microorganisms, organic molecules and the like, so that the purpose of concentrating the sample is achieved, the concentration of the microorganisms or the organic molecules is increased, and the detection precision is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

an icon: 1-body; 11-a sliding cavity; 12-a water channel; 2-a piston; 3, connecting blocks; 4-screw rod; 41-rotating the handle; 5-a collection tube; 51-a first valve; 6-a water filtering tank; 61-lower chamber; 62-an upper chamber; 7-a reverse osmosis membrane; 71-a protective net; 8-sealing the cover; 9-a drain pipe; 91-second valve.

Detailed Description

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element which is referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, an external environment water sample collection device comprises a body 1, a sliding cavity 11 is arranged inside the body 1, a piston 2 is connected in the sliding cavity 11 in a sliding mode, the piston 2 can slide in the sliding cavity 11, and the piston 2 is tightly attached to the inner wall of the sliding cavity 11 to achieve sealing, so that the sliding cavity 11 is divided into a rod cavity and a rodless cavity by the piston 2, and a sample is located in the rodless cavity.

In this embodiment, water course 12 has been seted up to the inner wall of sliding chamber 11, the lateral surface of body 1 is provided with water filtering tank 6, fixedly connected with reverse osmosis membrane 7 in water filtering tank 6, this reverse osmosis membrane 7 separate into epicoele 62 and cavity 61 with water filtering tank 6, water course 12 intercommunication sliding chamber 11 and cavity 61, water course 12 will slide the sample in the chamber 11 and send to cavity 61.

Further, the water inlet of water course 12 communicates sliding chamber 11 and is close to the front end of body 1, and when piston 2 was located between the water inlet of water course 12 and the front end of sliding chamber 11, the extruded water of piston 2 can not discharge through water course 12 to reach the purpose of collecting the sample after a small amount of concentrations.

In this embodiment, a collection tube 5 is disposed at the front end of the body 1, the collection tube 5 is used for collecting a sample, and a first valve 51 is disposed on the collection tube 5; the collection tube 5 is communicated with the sliding cavity 11; it should be noted that when concentrating the sample, the first valve 51 needs to be closed to prevent the sample from being discharged from the collection tube 5; when a sample is taken, the first valve 51 needs to be opened.

In this embodiment, in order to prevent when gathering the sample, the air passes reverse osmosis membrane 7 and passes through water course 12 entering slip chamber 11, guarantees to stably extract the sample, water filtering tank 6 can be dismantled sealing connection and have closing cap 8, and closing cap 8 passes through the screw with body 1 and can dismantle the connection, is provided with the sealing washer between the terminal surface of closing cap 8 and the surface of body 1, realizes sealedly, and closing cap 8 seals epicoele 62.

Further, due to the arrangement of the sealing cover 8, water in the upper cavity 62 cannot be drained during concentration, and the reverse osmosis membrane 7 is failed to filter, so that a drain pipe 9 is arranged on the sealing cover 8, a second valve 91 is arranged on the drain pipe 9, and the drain pipe 9 is communicated with the upper cavity 62; it should be noted that the second valve 91 needs to be closed when the sample is collected, so as to prevent air from entering the sliding chamber 11; the second valve 91 needs to be opened when the sample is concentrated, so that smooth liquid drainage can be ensured.

In the embodiment, in order to facilitate the collection work of a collector, the piston 2 can move in the sliding cavity 11, the connecting block 3 is arranged on the rear end face of the piston 2, the connecting block 3 is rotatably connected with the screw rod 4, the piston 2 is not affected by the rotation of the screw rod 4, and the piston 2 does not rotate along with the screw rod 4; the screw rod 4 penetrates through the rear end of the body 1 and is in threaded connection with the body 1, on one hand, the threaded connection can ensure the position stability of the piston 2, and on the other hand, the effect of saving labor is achieved by means of a mode that rotation is converted into linear motion.

In this embodiment, in order to facilitate the operation of the collector, a labor saving effect is further achieved by using a lever principle, and the screw rod 4 is provided with a rotating handle 41.

In this embodiment, both ends of the reverse osmosis membrane 7 are provided with protection nets 71, and the protection nets 71 restrain the reverse osmosis membrane 7 and reduce the damage of the reverse osmosis membrane 7 under the action of water pressure.

In this embodiment, an external environment water sample collection system's working method is as follows:

s1: opening the first valve 51, closing the second valve 91, and screwing the rotating handle 41 clockwise to push the piston 2 to the foremost end of the sliding cavity 11 by the screw 4; placing the liquid inlet of the collecting tube 5 in a sample to be collected, screwing the rotating handle 41 anticlockwise, driving the piston 2 to move towards the front end far away from the sliding cavity 11 by the push rod, and extracting the sample into the movable cavity to finish the collection of the sample;

s2: the first valve 51 is closed, the second valve 91 is opened, the rotating handle 41 is screwed clockwise, the screw rod 4 pushes the piston 2 to move towards the foremost end of the sliding cavity 11, the piston 2 pushes the sample, the sample flows from the water channel 12 to the lower cavity 61 and is filtered by the reverse osmosis membrane 7, water molecules pass through the reverse osmosis membrane 7 under the pushing pressure of the piston 2, substances such as microorganisms or organic matters cannot pass through the reverse osmosis membrane 7 until the piston 2 moves to a position between the water inlet of the water channel 12 and the front end of the sliding cavity 11, the concentration of the samples is completed, and the concentration of the substances such as the microorganisms or the organic matters is increased.

The concentration of the original sample is estimated from the concentration of the concentrated sample as follows:

the volume of the sample which can be accommodated in the sliding cavity 11 is Va, the volume of the concentrated sample is Vb, the volume of the water molecules discharged in the concentration process is (Va-Vb), and the concentration of the target substance in the original sample is (CbxVb)/Va when the concentration of the target substance is Cb measured by detecting the concentrated sample.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an external environment water sample collection system which characterized in that: the piston type air conditioner comprises a body (1), wherein a sliding cavity (11) is arranged in the body (1), and a piston (2) is connected in the sliding cavity (11) in a sliding manner; a water channel (12) is formed in the inner wall of the sliding cavity (11), a water filtering groove (6) is formed in the outer side face of the body (1), a reverse osmosis membrane (7) is fixedly connected in the water filtering groove (6), the water filtering groove (6) is divided into an upper cavity (62) and a lower cavity (61) by the reverse osmosis membrane (7), the water channel (12) is communicated with the sliding cavity (11) and the lower cavity (61), a collecting pipe (5) is arranged at the front end of the body (1), a first valve (51) is arranged on the collecting pipe (5), and the collecting pipe (5) is communicated with the sliding cavity (11); water filtering tank (6) can be dismantled sealing connection and have closing cap (8), is provided with drain pipe (9) on closing cap (8), be provided with second valve (91) on drain pipe (9), drain pipe (9) intercommunication epicoele (62).

2. The external environment water sample collection device according to claim 1, wherein: the rear end face of the piston (2) is provided with a connecting block (3), the connecting block (3) is rotatably connected with a screw rod (4), and the screw rod (4) penetrates through the rear end of the body (1) and is in threaded connection with the body (1).

3. The external environmental water sample collection device of claim 2, wherein: and a rotating handle (41) is arranged on the screw rod (4).

4. The external environmental water sample collection device of claim 1, wherein: and both ends of the reverse osmosis membrane (7) are provided with protective nets (71).