CN111089753A - Automatic sampling device for liquid samples - Google Patents
Automatic sampling device for liquid samples Download PDFInfo
- Publication number
- CN111089753A CN111089753A CN201911394486.0A CN201911394486A CN111089753A CN 111089753 A CN111089753 A CN 111089753A CN 201911394486 A CN201911394486 A CN 201911394486A CN 111089753 A CN111089753 A CN 111089753A
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- Prior art keywords
- sampling
- air
- passage
- port
- liquid samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an automatic sampling device for liquid samples, which comprises: the shell is provided with a handle, a sampling nozzle and a sampling bottle, and the shell is internally provided with an air suction passage and a sampling passage; the sampling bottle is provided with a sampling port and an air control port, and an air pumping port of the air pumping passage is communicated with the air control port in a sealing way; the sampling passage is communicated with the sampling nozzle and the sampling port. The invention solves the hidden trouble of manual sampling in the prior art, the shell is provided with the sampling nozzle and the sampling bottle, and the sampling nozzle is matched with the air suction passage and the sampling passage.
Description
Technical Field
The invention relates to a sampling device, in particular to an automatic sampling device for liquid samples.
Background
In the sampling process of a liquid sample, the sampling method generally adopted at present is manual sampling, the method is complex to operate, the risk of direct contact between an operator and the sample exists, the requirement on the quality of the operator is high, and certain potential safety hazards also exist. On the other hand, in the sampling process, the sampling amount of the sample is extremely unstable under the influence of various factors such as manual operation time, sample source pressure, vacuum degree in the sampling bottle and the like. When the sample is high-level liquid or the sampling quantity is required to be small and accurate, the manual sampling mode cannot be sufficient. Therefore, it is necessary to design an automatic sampling device which has a simple structure, is safe and convenient to use, has a stable sampling amount and can prevent workers from directly contacting with samples.
Disclosure of Invention
The above purpose of the invention is realized by the following technical scheme:
an automatic sampling device for a liquid sample, comprising: the shell is provided with a handle, a sampling nozzle and a sampling bottle, and the shell is internally provided with an air suction passage and a sampling passage; the sampling bottle is provided with a sampling port and an air control port, and an air pumping port of the air pumping passage is communicated with the air control port in a sealing way; the sampling passage is communicated with the sampling nozzle and the sampling port.
The automatic sampling device for liquid samples as described above, wherein the pumping path comprises: the air exhaust device and the first electromagnetic valve are communicated with the air control port sequentially through a pipeline; the power supply device supplies power to the air exhaust device and the first electromagnetic valve; the sampling path includes: and the second electromagnetic valve is connected with the trigger switch in series to form a first branch circuit, and the first branch circuit is connected with the power supply in parallel.
The automatic sampling device for a liquid sample as set forth above, wherein the trigger switch comprises: the trigger is rotatably arranged on the shell, and a contact piece is arranged on a contact of the microswitch and is abutted against the trigger.
The automatic sampling device for a liquid sample as described above, wherein the power supply device comprises: the battery is connected with the power switch in series to form a second branch circuit, and the battery is installed in the handle.
The automatic sampling device for the liquid sample comprises a sampling bottle body and a bottle cap, wherein the sampling bottle body is in threaded connection with the bottle cap, and the bottle cap is installed on the shell.
In conclusion, due to the adoption of the technical scheme, the hidden danger of manual sampling in the prior art is solved, the sampling nozzle and the sampling bottle are arranged on the shell, and the shell is matched with the air suction passage and the sampling passage.
Drawings
Fig. 1 is a schematic structural view of an automatic sampling apparatus for liquid samples according to the present invention.
Detailed Description
The invention is further described below with reference to the following figures and examples:
fig. 1 is a schematic structural view of an automatic sampling device for liquid samples according to the present invention, and referring to fig. 1, an automatic sampling device for liquid samples comprises: a handle, a sampling nozzle 18 and a sampling bottle 15 are arranged on the shell 9, and an air suction passage and a sampling passage are arranged in the shell 9; the sampling bottle 15 is provided with a sampling port and an air control port, and an air pumping port of the air pumping passage is communicated with the air control port in a sealing way; the sampling passage communicates with the sampling nozzle 18 and the sampling port.
Further, the air exhaust path includes: the power supply device 13, the air extraction device 8, the first electromagnetic valve 4, the air extraction device 8 and the air extraction device 8 of the first electromagnetic valve 4 are communicated with the air control port sequentially through a pipeline; the power supply device 13 supplies power to the air extraction device 8 and the first electromagnetic valve 4; the sampling path includes: the second electromagnetic valve 1, the second electromagnetic valve 1 and the trigger switch 10 are connected in series to form a first branch, and the first branch is connected with the power supply in parallel.
Furthermore, an exhaust end component 3 is connected between the air control port and the first electromagnetic valve 4, a sample injection end component 2 is connected between the sampling port and the second electromagnetic valve 1, and the passages of the invention are communicated through a pipeline 6.
Further, the trigger switch 10 includes: the trigger 11 is rotatably mounted on the housing 9, and the contact of the microswitch is provided with a contact piece which is abutted against the trigger 11.
Further, the power supply device 13 includes: the battery is connected with the power switch in series to form a second branch circuit, and the battery is installed in the handle.
Further, the sampling bottle 15 comprises a bottle body and a bottle cap 16, the bottle body is in threaded connection with the bottle cap 16, and the bottle cap 16 is installed on the shell 9. A closure 16 may be mounted to housing 9 by a closure mounting means 17.
In the implementation process of the invention: after the power supply device 13 is opened, the air exhaust device 8 and the first electromagnetic valve 4 are simultaneously opened, the air outlet end air passage is communicated, and the air exhaust device 8 exhausts air to the sampling bottle 15 through the exhaust end component and the first electromagnetic valve 4, so that negative pressure is formed in the sampling bottle 15; after the trigger is pulled down, the switch is opened, the second electromagnetic valve 1 is immediately opened, the sample injection passage is communicated, and the sample flows into the sample bottle 15 through the sampling nozzle 18, the second electromagnetic valve 1 and the sample injection end component under the action of pressure.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that many modifications and variations can be made by those skilled in the art in light of the above teachings without the use of inventive faculty, or by software programming. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. An automatic sampling device for liquid samples, comprising: the shell is provided with a handle, a sampling nozzle and a sampling bottle, and the shell is internally provided with an air suction passage and a sampling passage; the sampling bottle is provided with a sampling port and an air control port, and an air pumping port of the air pumping passage is communicated with the air control port in a sealing way; the sampling passage is communicated with the sampling nozzle and the sampling port.
2. The automated sampling device for liquid samples according to claim 1, wherein the aspiration path comprises: the air exhaust device and the first electromagnetic valve are communicated with the air control port sequentially through a pipeline; the power supply device supplies power to the air exhaust device and the first electromagnetic valve; the sampling path includes: and the second electromagnetic valve is connected with the trigger switch in series to form a first branch circuit, and the first branch circuit is connected with the power supply in parallel.
3. The automatic sampling device for liquid samples of claim 2, wherein the trigger switch comprises: the trigger is rotatably arranged on the shell, and a contact piece is arranged on a contact of the microswitch and is abutted against the trigger.
4. The automatic sampling device for liquid samples according to claim 2, characterized in that said power supply means comprise: the battery is connected with the power switch in series to form a second branch circuit, and the battery is installed in the handle.
5. The automatic sampling device for liquid samples of claim 1, wherein the sampling bottle comprises a body and a cap, the body is threadedly connected to the cap, and the cap is mounted on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394486.0A CN111089753A (en) | 2019-12-30 | 2019-12-30 | Automatic sampling device for liquid samples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394486.0A CN111089753A (en) | 2019-12-30 | 2019-12-30 | Automatic sampling device for liquid samples |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111089753A true CN111089753A (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911394486.0A Pending CN111089753A (en) | 2019-12-30 | 2019-12-30 | Automatic sampling device for liquid samples |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111089753A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729955A (en) * | 2020-12-30 | 2021-04-30 | 上海自动化仪表有限公司 | Automatic sampling device for liquid samples |
-
2019
- 2019-12-30 CN CN201911394486.0A patent/CN111089753A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729955A (en) * | 2020-12-30 | 2021-04-30 | 上海自动化仪表有限公司 | Automatic sampling device for liquid samples |
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