CN210953548U

CN210953548U - Automatic gas sampler

Info

Publication number: CN210953548U
Application number: CN201921803063.5U
Authority: CN
Inventors: 胡如意; 陈艳; 徐嘉察; 任便利; 应佳谦
Original assignee: Zhejiang Jingcheng Environmental Consulting Co ltd
Current assignee: Zhejiang Jingcheng Environmental Consulting Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-07-07
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses an automatic gas sampler, its technical scheme main points are including the push rod, and the push rod sets up in the through-hole to stretch into the air cavity, be provided with the second spring in the through-hole, the second spring housing is established on the push rod, the one end of second spring is connected on the bottom surface of through-hole, the other end of second spring is connected at the back of button, the push rod stretches into one of air cavity and serves and be provided with the inclined plane that is used for pressing the slider to slide to vacuum sampling pipe, the inclined plane butt is in the upper end of slider. The utility model discloses following beneficial effect has: when sampling, the user pushes down the button, and the inclined plane that the button drove on the push rod is compelled the slider tightly for the slider removes to vacuum sampling pipe, and the firing pin is impressed the sealed chamber with the syringe needle that seals the pinhole, makes vacuum sampling pipe and external gas circulation, and vacuum sampling pipe internal gas pressure is lower than the external world, uses the negative pressure to attract external gas automatic entering vacuum sampling pipe in, and the speed of gathering the gas sample is fast, and it is convenient to use, raises the efficiency.

Description

Automatic gas sampler

Technical Field

The utility model relates to a gas sampling device, more specifically say, it relates to an automatic gas sampler.

Background

A process for collecting a sample of a contaminant or contaminated air in an atmosphere. There are two types of collection methods: one is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to enrich pollutants with low concentration in the atmosphere, such as an air extraction method and a filter membrane method. Another type is to collect the air containing the contaminants with containers (glass bottles, plastic bags, etc.). The former measures the average concentration of the pollutants in the atmosphere within the sampling time; the latter measured instantaneous concentrations or average concentrations over a short period of time. The sampling mode is determined according to the purpose of sampling and the field situation. The sample should be representative. The sampling efficiency is high, the operation is simple and convenient, and the subsequent analysis and measurement are convenient to obtain reliable basic data of gas pollution.

The reasonable collection of the sample is very important for the whole inspection link, and the accuracy of the final analysis result is directly influenced. The existing gas sampler cannot automatically suck gas into the sampler, so that the sampled gas is easy to mix or difficult to sample.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an automatic gas sampler, this sample thief can absorb gas to the sample thief automatically in.

In order to achieve the above purpose, the utility model provides a following technical scheme: an automatic gas sampler comprises a vacuum sampling tube and an air inlet device, wherein the air inlet device is provided with a button, a through hole, an air cavity, an air inlet and a mounting opening, the air inlet is arranged above the air cavity, the mounting opening is arranged below the air cavity, the vacuum sampling tube is provided with a tube opening, the tube opening is detachably connected to the mounting opening, an automatic sealing plug is arranged on the tube opening, the automatic sealing plug is provided with a needle hole and a sealing cavity, the sealing cavity is communicated with the vacuum sampling tube, the needle hole is communicated with the sealing cavity, a piston and a first spring are arranged in the sealing cavity, a needle head is arranged on the piston and inserted into the needle hole, one end of the first spring is connected to the bottom surface of the sealing cavity, the other end of the first spring is linked to the lower end of the piston, a slide block is arranged in the air cavity in a sliding manner, a firing pin is, the push rod is arranged in the through hole and stretches into the air cavity, a second spring is arranged in the through hole, the second spring is sleeved on the push rod, one end of the second spring is connected to the bottom surface of the through hole, the other end of the second spring is connected to the back surface of the button, an inclined surface used for pressing the slider to slide to the vacuum sampling tube is arranged at one end of the push rod stretching into the air cavity, and the inclined surface is abutted to the upper end of the slider.

The utility model discloses further set up to: the automatic sealing plug is also provided with a sealing cover which is fixedly connected above the sealing cavity, and the needle hole is arranged on the sealing cover.

The utility model discloses further set up to: the needle and the firing pin are coaxially disposed.

The utility model discloses further set up to: the air suction pipe is connected to the air inlet and is a hose.

The utility model discloses further set up to: the piston is also provided with a piston hole for ventilation.

The utility model discloses further set up to: the slider is also provided with a slider hole for ventilation.

To sum up, the utility model discloses following beneficial effect has: when sampling, the user pushes down the button, and the inclined plane that the button drove on the push rod is compelled the slider tightly for the slider removes to vacuum sampling pipe, and the firing pin is impressed the sealed chamber with the syringe needle that seals the pinhole, makes vacuum sampling pipe and external gas circulation, and vacuum sampling pipe internal gas pressure is lower than the external world, uses the negative pressure to attract external gas automatic entering vacuum sampling pipe in, and the speed of gathering the gas sample is fast, and it is convenient to use, raises the efficiency. After the sampling is completed, the button is loosened, the second spring pushes the button to pop out, so that the inclined plane on the push rod does not tightly press the slide block any more, the needle head on the piston is pushed by the first spring to seal the needle hole, the vacuum sampling tube is sealed, and the sampled gas is not easy to mix. Use the vacuum sampling pipe can dismantle the connection on air inlet unit, and the change of being convenient for gathers a plurality of samples, and the vacuum can be through the automatic gas sample that absorbs of negative pressure to be difficult for mixing with the sample, be convenient for improve and detect the precision. The sealing cavity is convenient for limiting the piston, so that the piston moves in a limited direction, and the needle head is ensured to open and close the needle hole smoothly. The through hole is convenient for limit the push rod, so that the push rod moves in a limited direction, and the smooth completion of the action is ensured. The button sets up on air inlet unit's side, and the handheld use of being convenient for, the person of facilitating the use presses with the finger, convenient to use.

Drawings

FIG. 1 is a schematic diagram of an automatic gas sampler;

FIG. 2 is an enlarged view A of the automatic gas sampler;

FIG. 3 is an enlarged view B of the auto gas sampler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-3, an automatic gas sampler comprises a vacuum sampling tube 1 and an air inlet device 2, the air inlet device 2 is provided with a button 21, a through hole 22, an air cavity 23, an air inlet 24 and a mounting port 25, the air inlet 24 is arranged above the air cavity 23, the mounting port 25 is arranged below the air cavity 23, the vacuum sampling tube 1 is provided with a tube orifice 11, the tube orifice 11 is detachably connected to the mounting port 25, the tube orifice 11 is provided with an automatic sealing plug 4, the automatic sealing plug 4 is provided with a needle hole 41 and a sealing cavity 42, the sealing cavity 42 is communicated with the vacuum sampling tube 1, the needle hole 41 is communicated with the sealing cavity 42, the sealing cavity 42 is provided with a piston 43 and a first spring 44, the piston 43 is provided with a needle 431, the needle 431 is inserted into the needle hole 41, one end of the first spring 44 is connected to the bottom surface of the sealing cavity 42, the other end of the, a sliding block 231 is slidably arranged in the air cavity 23, a firing pin 232 is arranged at the lower end of the sliding block 231, the through hole 22 is arranged on the side surface of the air inlet device 2, a push rod 211 is arranged on the button 21, the push rod 211 is arranged in the through hole 22 and extends into the air cavity 23, a second spring 221 is arranged in the through hole 22, the second spring 221 is sleeved on the push rod 211, one end of the second spring 221 is connected to the bottom surface of the through hole 22, the other end of the second spring 221 is connected to the back surface of the button 21, an inclined surface 212 used for pressing the sliding block 231 to slide to the vacuum sampling tube 1 is arranged at one end of the push rod 211 extending into the air cavity 23, and the inclined surface.

Through the above scheme, when sampling, the user presses down button 21, button 21 drives inclined plane 212 on the push rod 211 and tightly forces slider 231, make slider 231 remove to vacuum sampling pipe 1, firing pin 232 will seal pinhole 41's syringe needle 431 and impress sealed chamber 42, make vacuum sampling pipe 1 and external gas circulation, the atmospheric pressure is lower than external in vacuum sampling pipe 1, use the negative pressure to attract external gas automatic entering vacuum sampling pipe 1 in, the speed of gathering the gas sample is fast, high durability and convenient use, and the efficiency is improved. After the sampling is completed, the button 21 is released, the second spring 221 pushes the button 21 to pop out, so that the inclined surface 212 on the push rod 211 no longer presses the slide block 231, the first spring 44 pushes the needle 431 on the piston 43 to close the needle hole 41, the vacuum sampling tube 1 is sealed, and the sampled gas is not easy to mix. Use vacuum sampling pipe 1 to dismantle the connection on air inlet unit 2, the change of being convenient for gathers a plurality of samples, and the vacuum can absorb gas sample through the negative pressure is automatic to be difficult for mixing with the sample, be convenient for improve and detect the precision. The sealing cavity 42 is convenient for limiting the piston 43, so that the piston 43 moves in a limited direction, and the needle 431 is ensured to open and close the needle hole 41 smoothly. The through hole 22 is convenient for limiting the push rod 211, so that the push rod 211 moves in a limited direction, and the smooth completion of actions is guaranteed. The button 21 is arranged on the side surface of the air inlet device 2, so that the hand-held use is convenient, the finger pressing by a user is convenient, and the use is convenient.

As a modified embodiment, the automatic sealing plug 4 is further provided with a cover 45, the cover 45 is fixedly connected above the sealing cavity 42, and the needle hole 41 is arranged on the cover 45.

Through above-mentioned scheme, closing cap 45 and automatic sealing plug 4 cooperation are isolated with vacuum sampling pipe 1 with external, seal vacuum sampling pipe 1. During installation, the automatic sealing insert is inserted into the vacuum sampling tube 1 and then is covered by the sealing cover 45, so that the vacuum sampling tube is convenient to install.

As a modified embodiment, needle 431 and plunger 232 are coaxially disposed.

Through the scheme, the firing pin 232 can be aligned to the needle 431 conveniently, the product precision is improved, and the smooth sampling is guaranteed.

As a modified specific embodiment, the device also comprises an air suction pipe 3, wherein the air suction pipe 3 is connected to the air inlet 24, and the air suction pipe 3 is a hose.

Through above-mentioned scheme, the hose is convenient for breathing pipe 3 to stretch into the pipeline or the position of being difficult to sample, aims at the gas that needs the collection.

As a modified embodiment, the piston 43 is further provided with a piston hole 432 for ventilation.

Through the scheme, during sampling, the needle 431 for sealing the needle hole 41 is pressed into the sealing cavity 42 by the striker 232, gas enters the sealing cavity 42, and the piston hole 432 facilitates the gas to enter the vacuum sampling tube 1, so that the sampling speed is accelerated, and the sampling efficiency is improved. The piston bore 432 prevents the piston 43 from obstructing the entry of gas.

As a modified embodiment, the slider 231 is further provided with a slider hole 233 for ventilation.

Through the scheme, during sampling, the sliding block hole 233 is convenient for gas to pass through, and the sliding block 231 is prevented from blocking gas from entering the vacuum sampling tube 1. The slider holes 233 increase the gas flow area of the gas chamber 23, accelerate the sampling speed, and improve the sampling efficiency.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic gas sampler is characterized in that: comprises a vacuum sampling pipe (1) and an air inlet device (2), wherein the air inlet device (2) is provided with a button (21), a through hole (22), an air cavity (23), an air inlet (24) and a mounting port (25), the air inlet (24) is arranged above the air cavity (23), the mounting port (25) is arranged below the air cavity (23), the vacuum sampling pipe (1) is provided with a pipe orifice (11), the pipe orifice (11) is detachably connected on the mounting port (25), the pipe orifice (11) is provided with an automatic sealing plug (4), the automatic sealing plug (4) is provided with a pinhole (41) and a sealing cavity (42), the sealing cavity (42) is communicated with the vacuum sampling pipe (1), the pinhole (41) is communicated with the sealing cavity (42), and the sealing cavity (42) is internally provided with a piston (43) and a first spring (44), the piston (43) is provided with a needle head (431), the needle head (431) is inserted into the needle hole (41), one end of the first spring (44) is connected to the bottom surface of the sealing cavity (42), the other end of the first spring (44) is connected to the lower end of the piston (43) in a chain manner, the air cavity (23) is internally provided with a sliding block (231) in a sliding manner, the lower end of the sliding block (231) is provided with a firing pin (232), the through hole (22) is arranged on the side surface of the air inlet device (2), the button (21) is provided with a push rod (211), the push rod (211) is arranged in the through hole (22) and extends into the air cavity (23), the through hole (22) is internally provided with a second spring (221), the second spring (221) is sleeved on the push rod (211), one end of the second spring (221) is connected to the bottom surface of the through hole (22), and the other end of the second spring (221) is connected to the back surface of the button, one end of the push rod (211) extending into the air cavity (23) is provided with an inclined surface (212) used for pressing the sliding block (231) to slide to the vacuum sampling tube (1), and the inclined surface (212) is abutted to the upper end of the sliding block (231).

2. The automatic gas sampler as recited in claim 1, wherein: still be provided with closing cap (45) on automatic sealing plug (4), closing cap (45) fixed connection is in the top of sealed chamber (42), pinhole (41) set up at closing cap (45).

3. The automatic gas sampler as recited in claim 1, wherein: the needle (431) and the firing pin (232) are coaxially disposed.

4. The automatic gas sampler as recited in claim 1, wherein: the air suction pipe (3) is further included, the air suction pipe (3) is connected to the air inlet (24), and the air suction pipe (3) is a hose.

5. The automatic gas sampler as recited in claim 1, wherein: the piston (43) is also provided with a piston hole (432) for ventilation.

6. The automatic gas sampler as recited in claim 1, wherein: the sliding block (231) is also provided with a sliding block hole (233) for ventilation.