Sample pretreatment device of gas chromatograph-mass spectrometer

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to a gas chromatograph-mass spectrometer sample pretreatment device which comprises a gas chromatograph-mass spectrometer sample pretreatment device box body and a sample introduction chamber, and waste prevention components are respectively arranged in the gas chromatograph-mass spectrometer sample pretreatment device box body and the sample introduction chamber; the waste prevention assembly comprises a sample outlet pipe arranged on the upper side of the left end of a box body of the sample pretreatment device of the gas chromatograph-mass spectrometer, one end of the sample outlet pipe is connected with a spiral separation pipe, and the outer wall of the spiral separation pipe is arranged in the box body of the sample pretreatment device of the gas chromatograph-mass spectrometer. According to the gas chromatograph-mass spectrometer sample pretreatment device, the stirring piece is used for increasing mixing of samples, the air pump is used for increasing the air pressure in the sample introduction chamber, water filtration of the samples is facilitated through the filter membrane, separation and purification of the samples are facilitated through the spiral separation pipe, and waste falls into the waste discharge pipe through the gravity principle; the waste of samples is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to a gas chromatography-mass spectrometry (GC-MS) sample pretreatment device. Background Art

[0002] Gas chromatography-mass spectrometry (GC-MS) is a precision instrument used to measure the composition of organic samples in wastewater. The instrument has high requirements for the purity of the measured samples, such as the absence of suspended matter, heavy components, and water. Therefore, the samples must be pretreated before entering the instrument. Only when the degree of sample purification meets the injection conditions can the samples be injected into the sample pool of the instrument.

[0003] Patent publication number CN202562898U proposes a gas chromatography-mass spectrometer sample pretreatment device, which includes a sample inlet tube, a sample outlet tube, a spiral separation tube, a heavy component collection tube, a waste outlet, a waste outlet cover, and a bracket. The sample slowly enters the spiral separation tube along the tangential direction through a peristaltic pump, causing the sample to produce a spiral rotation in the spiral separation tube. Under the action of gravity, suspended matter, water, heavy components, etc. in the sample will sink to the heavy component collection tube. The pretreated sample is mainly light organic matter, which flows into a collection bottle through the sample outlet tube, and the suspended matter, heavy components, and water in the sample are discharged from the waste outlet at the bottom end of the heavy component collection tube. However, the following problems still exist in this patent:

[0004] During use of the above-mentioned gas chromatography-mass spectrometry sample pretreatment device, the sample is easily partially discharged directly through the waste tube, which easily causes sample waste.

[0005] In view of the above problems, it is necessary to design a gas chromatography-mass spectrometry sample pretreatment device to overcome the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a sample pretreatment device for gas chromatography-mass spectrometry, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A gas chromatography-mass spectrometry (GC-MS) sample pretreatment device comprises a GC-MS sample pretreatment device housing and a sampling chamber, wherein waste prevention components are respectively provided inside the GC-MS sample pretreatment device housing and the sampling chamber;

[0009] The waste prevention component includes a sample outlet tube arranged on the upper left side of the gas chromatography-mass spectrometer sample pretreatment device box, one end of the sample outlet tube is connected to a spiral separation tube, the outer wall of the spiral separation tube is arranged inside the gas chromatography-mass spectrometer sample pretreatment device box, the other end of the spiral separation tube is connected to a separation tube, one end of the separation tube is connected to a waste pipe, the other end of the separation tube is connected to the input end of a pump, the bottom end of the pump is installed at the bottom end of the inner wall of the gas chromatography-mass spectrometer sample pretreatment device box, and the output end of the pump is connected to the bottom end of the inner wall of the gas chromatography-mass spectrometer sample pretreatment device box. The outlet end is connected to a sample delivery pipe, a waste storage box is provided on the lower side of the waste discharge pipe, an air pump is installed on the upper side of the sampling chamber, one end of the air pump is connected to an air pipe, one end of the air pipe passes through the interior of the sampling chamber, a sampling pipe is provided on the right side of the sampling chamber, a motor is installed in the middle of the right side of the sampling chamber, the output end of the motor is connected to a stirring member through a coupling, a first filter membrane is installed on the lower side of the interior of the sampling chamber, a second filter membrane is installed on the lower side of the first filter membrane, and a discharge pipe is provided in the middle of the bottom end of the sampling chamber.

[0010] As a preferred solution of the present invention, the sample outlet tube is fixedly connected to the spiral separation tube, and the spiral separation tube is fixedly connected to the separation tube.

[0011] As a preferred solution of the present invention, the waste discharge pipe and the separation pipe are fixedly connected, and the pump is fixedly installed between the box of the gas chromatography-mass spectrometry sample pretreatment device.

[0012] As a preferred solution of the present invention, the air pump is fixedly installed between the injection chamber, and the air pipe is fixedly connected to the air pump.

[0013] As a preferred solution of the present invention, the injection tube is fixedly connected to the injection chamber, the output end of the motor is fixedly connected to the stirring element via a coupling, and the first filter membrane is fixedly installed to the injection chamber.

[0014] As a preferred solution of the present invention, the second filter membrane is fixedly installed between the sampling chamber, and the row pipe is fixedly connected to the sampling chamber. Beneficial effects

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the utility model, a sample pretreatment device for gas chromatography-mass spectrometry is designed, a stirring element is used to increase the mixing of the sample, an air pump is used to increase the air pressure inside the sampling chamber, the sample is facilitated to pass through the first filter membrane and the second filter membrane for water filtration, the spiral separation tube is used to facilitate the separation and purification of the sample, and the waste falls to the waste pipe by the principle of gravity, thereby preventing the waste of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the box of the gas chromatography-mass spectrometry sample pretreatment device of the present invention;

[0018] Figure 2 This is a schematic structural diagram of the spiral separation tube and the waste discharge pipe of the utility model;

[0019] Figure 3 It is a schematic diagram of the front view anatomical structure of the sample injection chamber of the present invention.

[0020] In the figure: 1. Gas chromatography-mass spectrometry (GC-MS) sample pretreatment device housing; 2. Sample inlet chamber; 3. Waste prevention component; 301. Sample outlet tube; 302. Waste discharge tube; 303. Spiral separation tube; 304. Separation tube; 305. Air pump; 306. Suction pump; 307. Waste storage box; 308. Air pipe; 309. Sample inlet tube; 310. Motor; 311. Stirring element; 312. Sample transport tube; 313. First filter membrane; 314. Second filter membrane; 315. Discharge tube. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-3 As shown, a gas chromatography-mass spectrometry sample pretreatment device comprises a gas chromatography-mass spectrometry sample pretreatment device housing 1 and a sampling chamber 2, wherein waste prevention components 3 are respectively provided inside the gas chromatography-mass spectrometry sample pretreatment device housing 1 and the sampling chamber 2;

[0023] The waste prevention component 3 includes a sample outlet tube 301 arranged on the upper left side of the gas chromatography-mass spectrometer sample pretreatment device box 1, one end of the sample outlet tube 301 is connected to a spiral separation tube 303, the outer wall of the spiral separation tube 303 is arranged inside the gas chromatography-mass spectrometer sample pretreatment device box 1, the other end of the spiral separation tube 303 is connected to a separation tube 304, one end of the separation tube 304 is connected to a waste pipe 302, the other end of the separation tube 304 is connected to the input end of a pump 306, the bottom end of the pump 306 is installed at the bottom end of the inner wall of the gas chromatography-mass spectrometer sample pretreatment device box 1, and the output end of the pump 306 is connected to the There is a sample delivery pipe 312, and a waste storage box 307 is provided on the lower side of the waste discharge pipe 302. An air pump 305 is installed on the upper side of the sampling chamber 2, and one end of the air pump 305 is connected to the air pipe 308. One end of the air pipe 308 runs through the interior of the sampling chamber 2. A sampling pipe 309 is provided on the right side of the sampling chamber 2, and a motor 310 is installed in the middle of the right side of the sampling chamber 2. The output end of the motor 310 is connected to the stirring member 311 through a coupling. A first filter membrane 313 is installed on the lower side of the interior of the sampling chamber 2, and a second filter membrane 314 is installed on the lower side of the first filter membrane 313. A discharge pipe 315 is provided in the middle of the bottom end of the sampling chamber 2.

[0024] Please see the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, the sample outlet tube 301 is fixedly connected to the spiral separation tube 303, the spiral separation tube 303 is fixedly connected to the separation tube 304, the waste pipe 302 is fixedly connected to the separation tube 304, the pump 306 is fixedly installed between the gas chromatography-mass spectrometry sample pretreatment device housing 1, the air pump 305 is fixedly installed between the sampling chamber 2, the air pipe 308 is fixedly connected to the air pump 305, the sampling tube 309 is fixedly connected to the sampling chamber 2, the output end of the motor 310 is fixedly connected to the stirring member 311 via a coupling, the first filter membrane 313 is fixedly installed between the sampling chamber 2, the second filter membrane 314 is fixedly installed between the sampling chamber 2, and the exhaust pipe 315 is fixedly connected to the sampling chamber 2;

[0025] The stirring element 311 plays a role in mixing the sample, the first filter membrane 313 and the second filter membrane 314 play a dual role in filtering water, the spiral separation tube 303 plays a role in separating and purifying the sample, and the waste storage box 307 plays a role in collecting waste.

[0026] The working process of the utility model is as follows: when the gas chromatography-mass spectrometer sample pretreatment device designed in this scheme is used, the valves of the sample outlet pipe 301, the waste pipe 302 and the drain pipe 315 are closed, the sample is input into the injection chamber 2 through the injection pipe 309, the motor 310 is connected to the external power supply, the motor 310 is started, and the stirring member 311 is driven to rotate, so as to facilitate mixing of the sample in the injection chamber 2. After mixing, the motor 310 is stopped, and the air pump 305 is started to input the gas into the injection chamber 2 through the air pipe 308 to increase the air pressure in the injection chamber 2, thereby promoting the mixing of the sample. The first filter membrane 313 and the second filter membrane 314 filter the water in the sample to the bottom of the sampling chamber 2. After the filtration is completed, the valve of the sample delivery tube 312 is opened, and the pump 306 is started to input the filtered sample inside the sampling chamber 2 into the spiral separation tube 303 through the sample delivery tube 312. The spiral separation tube 303 separates and purifies the waste in the sample again. The purified sample flows out from the sample outlet tube 301. Under the action of gravity, the waste falls through the separation tube 304 to the waste discharge pipe 302, and is discharged into the waste storage box 307 through the waste discharge pipe 302, thereby preventing the waste of the sample.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas chromatography-mass spectrometry (GC-MS) sample pretreatment device, comprising a gas chromatography-mass spectrometry (GC-MS) sample pretreatment device housing (1) and a sample inlet chamber (2), characterized in that: The gas chromatography-mass spectrometry sample pretreatment device housing (1) and the sample injection chamber (2) are each provided with a waste prevention component (3); The waste prevention component (3) includes a sample outlet tube (301) arranged on the upper left side of the gas chromatography-mass spectrometer sample pretreatment device box (1), one end of the sample outlet tube (301) is connected to a spiral separation tube (303), the outer wall of the spiral separation tube (303) is arranged inside the gas chromatography-mass spectrometer sample pretreatment device box (1), the other end of the spiral separation tube (303) is connected to a separation tube (304), one end of the separation tube (304) is connected to a waste discharge pipe (302), the other end of the separation tube (304) is connected to the input end of a pump (306), the bottom end of the pump (306) is installed at the bottom end of the inner wall of the gas chromatography-mass spectrometer sample pretreatment device box (1), and the output end of the pump (306) is connected to the sample delivery tube (31 2), a waste storage box (307) is provided on the lower side of the waste discharge pipe (302), an air pump (305) is installed on the upper side of the sampling chamber (2), one end of the air pump (305) is connected to an air pipe (308), one end of the air pipe (308) passes through the interior of the sampling chamber (2), a sampling pipe (309) is provided on the right side of the sampling chamber (2), a motor (310) is installed in the middle of the right side of the sampling chamber (2), the output end of the motor (310) is connected to a stirring member (311) through a coupling, a first filter membrane (313) is installed on the lower side of the interior of the sampling chamber (2), a second filter membrane (314) is installed on the lower side of the first filter membrane (313), and a discharge pipe (315) is provided in the middle of the bottom end of the sampling chamber (2).

2. The gas chromatography-mass spectrometry sample pretreatment device according to claim 1, characterized in that: The sample outlet tube (301) is fixedly connected to the spiral separation tube (303), and the spiral separation tube (303) is fixedly connected to the separation tube (304).

3. The gas chromatography-mass spectrometry sample pretreatment device according to claim 1, characterized in that: The waste discharge pipe (302) and the separation pipe (304) are fixedly connected, and the pump (306) is fixedly installed between the gas chromatography-mass spectrometry sample pretreatment device box (1).

4. The gas chromatography-mass spectrometry sample pretreatment device according to claim 1, wherein: The air pump (305) is fixedly installed with the sample injection chamber (2), and the air pipe (308) is fixedly connected with the air pump (305).

5. The gas chromatography-mass spectrometry sample pretreatment device according to claim 1, characterized in that: The injection tube (309) is fixedly connected to the injection chamber (2), the output end of the motor (310) is fixedly connected to the stirring element (311) via a coupling, and the first filter membrane (313) is fixedly installed to the injection chamber (2).

6. The gas chromatography-mass spectrometry sample pretreatment device according to claim 1, characterized in that: The second filter membrane (314) is fixedly installed with the sample injection chamber (2), and the drain pipe (315) is fixedly connected with the sample injection chamber (2).

Images