Back pressure sampling system

Abstract

The utility model discloses a back pressure sampling system which comprises a high-purity nitrogen pipeline, a sample conveying pipeline and an ultrasonic cleaning assembly, the high-purity nitrogen pipeline is connected with an exhaust pipeline and a gas end hose in a tee joint mode, and the sample conveying pipeline is connected with a liquid end hose. The liquid-end hose and the gas-end hose are connected with the top of the packaging barrel through the liquid-end connector and the gas-end connector respectively. The chemical sampling device has the advantages that the risk that chemicals are prone to being polluted during sampling is eliminated, sampling convenience is improved, and the service life of chemical packaging materials is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling system technical field, especially a kind of back pressure sampling system. BACKGROUND

[0002] 200L bucket is one of main packaging of electronic chemicals, and the pollution risk of product is very high after sampling, and the common sampling mode is sampling tube or using pump to extract product in bucket, using sampling tube to sample, sampling tube is very easy to pollute product, if using pump to extract product, air supplement can cause pollution, and if air supplement pressure is not controlled well, it is possible to suck the bucket flat, there is risk in quality or safety. SUMMARY

[0003] The utility model solves the technical problems that pollution or flat of packaging bucket is caused when sampling.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a back pressure sampling system, including high-purity nitrogen pipeline, sample delivery pipeline and ultrasonic cleaning assembly, the tee of high-purity nitrogen pipeline is connected with exhaust pipeline and gas end hose, and the sample delivery pipeline is connected with liquid end hose, and the liquid end hose and the gas end hose are connected with the top of the packaging bucket through liquid end joint and gas end joint respectively.

[0005] Preferably, the bottom end of the liquid end joint is attached to the inner bottom wall of the packaging bucket, and the bottom side wall of the liquid end joint is provided with a feed inlet in communication with the internal passage thereof, and the bottom end of the gas end joint is located at the inner top of the packaging bucket.

[0006] Preferably, the top end of the liquid end joint is provided with an annular cavity, the bottom end outer wall of the liquid end hose is attached to the inner side wall of the annular cavity, and the top end outer diameter of the liquid end joint is greater than the bottom end outer diameter.

[0007] Preferably, a magnetic ring is slidably sleeved at the bottom of the liquid end joint, an air cavity is arranged in the magnetic ring to make the magnetic ring float on the liquid surface, and a magnetic induction type proximity switch is equidistantly arranged on the liquid end joint in axial direction, and the magnetic induction type proximity switch is wired along the internal passage of the liquid end joint.

[0008] Preferably, a nitrogen pressure regulating valve and a nitrogen filter are connected to the high-purity nitrogen pipeline.

[0009] Preferably, the ultrasonic cleaning assembly comprises an ultrasonic cleaning tank, a drain pipeline and an ultrapure water pipeline in communication with the ultrasonic cleaning tank, and the input end of the drain pipeline is located above the output end of the ultrapure water pipeline.

[0010] 1. The utility model provides a kind of back pressure sampling system, using the back pressure sampling mode of full-closed type, avoid the pollutant in environment to enter into product packaging barrel to produce pollution to product, while back pressure uses high-purity nitrogen, avoid air supply to cause pollution to product.

[0011] 2, the whole sampling process uses the way of automated sampling, system is in closed state, and control the pressure of air supply, can avoid chemical leakage or packaging barrel deformation.

[0012] 3, liquid end connector is provided with magnetic ring and magnetic induction proximity switch, can accurately obtain the product liquid level in packaging barrel, and then know sampling volume. DRAWINGS

[0013] The utility model is further described below in connection with drawings and embodiment:

[0014] Figure 1 It is structure schematic diagram of the utility model embodiment.

[0015] In the figure: 1, liquid end connector;2, liquid end hose;3, gas end connector;4, gas end hose;5, sample delivery pipeline;6, exhaust pipeline;7, high-purity nitrogen pipeline;8, nitrogen pressure regulating valve;9, nitrogen filter;10, ultrasonic cleaning tank;11, drain pipeline;12, ultrapure water pipeline;13, operation screen;14, magnetic ring;15, magnetic induction proximity switch. DETAILED DESCRIPTION

[0016] As Figure 1 Indicated, the utility model provides a kind of back pressure sampling system, including high-purity nitrogen pipeline 7, sample delivery pipeline 5 and ultrasonic cleaning assembly, high-purity nitrogen pipeline 7 three-way connection has exhaust pipeline 6 and gas end hose 4, sample delivery pipeline 5 is connected with liquid end hose 2, and liquid end hose 2 and gas end hose 4 are connected with the top of packaging barrel respectively through liquid end connector 1 and gas end connector 3.

[0017] The working principle of back pressure sampling system includes three states:

[0018] State one, sampling preparation stage, in this state, need to open the valve of ultrapure water pipeline 12, keep ultrasonic cleaning tank 10 as flowing ultrapure water, then open ultrasonic cleaning device in ultrasonic cleaning tank 10, place liquid end connector 1 and gas end connector 3 in ultrasonic cleaning tank 10 and clean.

[0019] State two, chemical sampling, in this state, the connection of liquid end connector 1, liquid end hose 2 and sample delivery pipeline 5, the connection of gas end connector 3, gas end hose 4 and high-purity nitrogen pipeline 7, the connection of high-purity nitrogen pipeline 7, exhaust pipeline 6 and gas end hose 4 by using a tee joint; then open the valves on liquid end hose 2 and gas end hose 4, click start sampling on operation screen 13, open the valves on high-purity nitrogen pipeline 7 and sample delivery pipeline 5, and start sampling.

[0020] State three, pressure relief state, in this state, the valve on liquid end hose 2 is closed first, then the sampling completion and start pressure relief button on operation screen 13 is clicked, the valves on high-purity nitrogen pipeline 7 and sample delivery pipeline 5 are closed, and the valve on exhaust pipeline 6 is opened to relieve pressure, and after the pressure is discharged to 0 Kpa, the exhaust valve is automatically closed, then the valve on gas end hose 4 is manually closed, and liquid end connector 1 and gas end connector 3 are removed.

[0021] As shown in Figure 1 , in order to ensure the stability of the installation of liquid end connector 1 in the packaging barrel, the bottom end of the liquid end connector 1 is attached to the inner bottom wall of the packaging barrel, the bottom side wall of the liquid end connector 1 is provided with a feed port communicating with the internal passage thereof, and the bottom end of gas end connector 3 is located at the inner top of the packaging barrel. The top of the liquid end connector 1 is provided with an annular protrusion, the end wall of the annular protrusion is attached to the top wall of the packaging barrel, which can cover the opening hole at the top of the packaging barrel, and the bottom end of the liquid end connector 1 contacts the inner bottom wall of the packaging barrel, thereby ensuring the stability of the liquid inlet process of the liquid end connector 1.

[0022] As shown in Figure 1 , in order to ensure the tightness of the connection of liquid end connector 1 and liquid end hose 2. The top end of the liquid end connector 1 is provided with an annular cavity, the bottom end outer wall of the liquid end hose 2 is attached to the inner side wall of the annular cavity, and the top end outer diameter of the liquid end connector 1 is larger than the bottom end outer diameter.

[0023] As shown in Figure 1As shown. A magnetic ring 14 is slidably fitted at the bottom of the liquid connector 1. The magnetic ring 14 has a gas cavity inside, allowing it to float on the liquid surface. Magnetic induction proximity switches 15 are equidistantly arranged along the axial direction of the liquid connector 1, with the switches running along internal channels. An opening is provided on the outer wall of the liquid connector 1, and a magnetic induction proximity switch 15 is embedded within it. The switches run from inside the liquid connector 1. Two internal channels are provided in the middle of the liquid connector 1, separated by a partition. One channel is used for the flow of chemicals, and the other for the wiring. After the liquid connector 1 is installed in the packaging container, the magnetic ring 14 floats on the chemicals. As nitrogen gas is introduced into the container, some chemicals flow out through the liquid connector 1, causing the liquid level to drop. This causes the magnetic ring 14 to move downwards, triggering different magnetic induction proximity switches 15, thus revealing the chemical level inside the container and the sampling volume.

[0024] like Figure 1 As shown, to ensure the purity and stable pressure of the supplied nitrogen, a nitrogen pressure regulating valve 8 and a nitrogen filter 9 are connected to the high-purity nitrogen pipeline 7.

[0025] like Figure 1 As shown. The ultrasonic cleaning assembly includes an ultrasonic cleaning tank 10 and a drain pipe 11 and an ultrapure water pipe 12 connected to the ultrasonic cleaning tank 10. The inlet end of the drain pipe 11 is located above the outlet end of the ultrapure water pipe 12. The bottom-supplying and top-draining method maintains the stability of the liquid level in the ultrasonic cleaning tank 10 while ensuring that the ultrasonic cleaning tank 10 contains flowing ultrapure water, allowing the liquid-end connector 1 and the gas-end connector 3 to be thoroughly cleaned.

Claims

1. A back pressure sampling system characterized by: Including high-purity nitrogen pipeline (7), sample delivery pipeline (5) and ultrasonic cleaning assembly, high-purity nitrogen pipeline (7) three-way connection has exhaust pipeline (6) and gas end hose (4), sample delivery pipeline (5) is connected with liquid end hose (2), liquid end hose (2) and gas end hose (4) are connected with the top of packing barrel through liquid end joint (1) and gas end joint (3) respectively.

2. A back pressure sampling system as claimed in claim 1, wherein: The bottom end of the liquid end joint (1) is attached to the inner bottom wall of the packing barrel, and the bottom side wall of the liquid end joint (1) is provided with a feed inlet communicating with the internal passage thereof, and the bottom end of the gas end joint (3) is located at the inner top of the packing barrel.

3. A back pressure sampling system as claimed in claim 2, wherein: The top end of the liquid end joint (1) is provided with an annular cavity, the bottom end outer wall of the liquid end hose (2) is attached to the inner side wall of the annular cavity, and the top end outer diameter of the liquid end joint (1) is larger than the bottom end outer diameter.

4. A back pressure sampling system as claimed in claim 3, wherein: The bottom of the liquid end joint (1) is slidably sleeved with a magnetic ring (14), the magnetic ring (14) is provided with an air cavity inside to make the magnetic ring (14) float on the liquid surface, the liquid end joint (1) is provided with a magnetic induction type proximity switch (15) equidistantly along the axial direction, and the magnetic induction type proximity switch (15) is wired along the internal passage of the liquid end joint (1).

5. The back pressure sampling system of claim 1, wherein: The high-purity nitrogen pipeline (7) is connected with a nitrogen pressure regulating valve (8) and a nitrogen filter (9).

6. A back pressure sampling system as claimed in claim 1, wherein: The ultrasonic cleaning assembly comprises an ultrasonic cleaning tank (10), a drainage pipeline (11) and an ultrapure water pipeline (12) communicating with the ultrasonic cleaning tank (10), and the input end of the drainage pipeline (11) is located above the output end of the ultrapure water pipeline (12).

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