Headspace gas chromatograph convenient for processing residual liquid

Abstract

The headspace gas chromatograph comprises a chromatograph body, a detection groove, a sealing door, a water storage cavity, a water outlet pipe, a water outlet hole and a flushing mechanism, the detection groove is formed in the chromatograph body, the sealing door is arranged on the side wall of the detection groove, the water storage cavity is formed in one side of the detection groove, and the water outlet pipe is arranged on the other side of the detection groove. The water outlet pipe is arranged on the side wall of the water storage cavity, a water outlet control valve is arranged in the water outlet pipe, the multiple water outlet holes are formed between the water storage cavity and the detection groove, and the flushing mechanism is arranged in the water storage cavity and used for cleaning crystals separated out from residual liquid in the water storage cavity. According to the headspace gas chromatograph capable of conveniently treating the residual liquid, the residual liquid and crystal substances in the water storage cavity can be conveniently cleaned through the flushing opening in the surface of the flushing pipe and the cleaning brush bristles; therefore, the problem that in the prior art, residual liquid and crystal substances are prone to being generated in the working process of a headspace gas chromatograph, and the detection result is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of headspace gas chromatographs, in particular to a headspace gas chromatograph which is convenient for processing residual liquid. Background Art

[0002] Headspace gas chromatograph is an analytical instrument used in the field of chemical engineering. It is used for quantitative analysis of volatile substances such as acrylonitrile and vinyl chloride, and for the detection of commodities such as food contact materials and petroleum products. The detector is a device that converts the concentration or mass (content) of each component separated by the chromatographic column into an easily measurable electrical signal (such as voltage, current, etc.) and performs signal processing. It is the eyes of the chromatograph and is usually composed of three parts: detection element, amplifier, and digital-to-analog converter.

[0003] During use, the headspace gas chromatograph places the sample to be tested in a sealed container, heats the sample to evaporate the volatile components from the sample matrix, and reaches equilibrium in the gas-liquid (or gas-solid) phases. The headspace gas is directly extracted for gas chromatography analysis to verify the composition and content of the volatile components in the sample.

[0004] However, in the process of testing the sample, when the container is placed in and taken out of the headspace gas chromatograph, the sample is easily spilled from the container into the headspace gas chromatograph to form residual liquid. At the same time, during the testing process, the residual liquid is easily evaporated by heat to precipitate crystals. The presence of the residual liquid and the crystals in the residual liquid will affect the subsequent detection accuracy of other samples to be tested. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides a headspace gas chromatograph that is convenient for processing residual liquid, so as to solve the problem in the prior art that residual liquid and crystals are easily generated in the working process of the headspace gas chromatograph, which affects the detection results.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a headspace gas chromatograph convenient for treating residual liquid, comprising a chromatograph body, a detection tank, a sealing door, a water storage cavity, a water outlet pipe, a water outlet hole and a flushing mechanism;

[0009] The detection slot is arranged on the chromatograph body;

[0010] The sealing door is arranged on the side wall of the detection slot;

[0011] The water storage cavity is arranged on one side of the detection tank;

[0012] The water outlet pipe is arranged on the side wall of the water storage cavity, and a water outlet control valve is arranged in the water outlet pipe;

[0013] The water outlet holes are provided in a plurality, and the plurality of water outlet holes are opened between the water storage cavity and the detection groove;

[0014] The flushing mechanism is arranged in the water storage cavity and is used for cleaning the crystals precipitated from the residual liquid in the water storage cavity.

[0015] Furthermore, the flushing mechanism comprises:

[0016] A first cavity, the first cavity is opened on one side of the water storage cavity;

[0017] A support tube, the support tube is rotatably disposed on the inner bottom wall of the first cavity, the support tube penetrates the side wall of the first cavity and extends into the water storage cavity, and one end of the support tube away from the first cavity is sealed;

[0018] A support frame, wherein the support frame is provided in plurality, and the plurality of support frames are fixedly arranged on the support tube;

[0019] A flushing pipe, the flushing pipe is rotatably arranged between the support frame and the support pipe, and the flushing pipe extends into the support pipe;

[0020] Flushing ports, each of the flushing pipes is provided with a plurality of flushing ports;

[0021] A water inlet pipe, which is arranged on the chromatograph body and is connected to the support pipe;

[0022] A cleaning mechanism is arranged on the flushing pipe and is used for cleaning crystals in the water storage cavity.

[0023] Furthermore, the cleaning mechanism comprises:

[0024] Cleaning bristles, the cleaning bristles are evenly distributed on the flushing tube;

[0025] a fixed pipe, the fixed pipe being fixedly arranged on the inner bottom wall of the first cavity corresponding to the water inlet pipe, and the water inlet pipe being communicated with the fixed pipe;

[0026] A first bevel gear, wherein the first bevel gear is fixedly disposed on a side wall of the fixed tube;

[0027] A second bevel gear, wherein the second bevel gear is fixedly disposed on the side wall of the flushing pipe;

[0028] Wherein, the first bevel gear is meshed with the second bevel gear;

[0029] A rotating mechanism is disposed in the first cavity and is used to control the support tube to rotate.

[0030] As a further solution of this scheme, the rotating mechanism includes:

[0031] an annular rack, the annular rack being fixedly arranged on the support tube;

[0032] A first gear, the first gear is rotatably disposed in the first cavity, and the first gear is meshed with the annular rack;

[0033] A first motor, wherein an output end of the first motor is fixedly connected to the first gear.

[0034] As a further solution of this solution, a filtering mechanism is also included, and the filtering mechanism is arranged in the fixed pipe and is used to filter the water entering the first cavity. The filtering mechanism includes:

[0035] A filter plate, wherein two filter plates are provided, and the two filter plates are fixedly arranged in the fixed tube;

[0036] Activated carbon particles are filled in the fixed tube and located between the filter plates.

[0037] On the basis of the above scheme, it also includes a spiral rod, which is fixedly arranged between the filter plates.

[0038] (III) Beneficial effects

[0039] Compared with the prior art, the utility model provides a headspace gas chromatograph that is convenient for treating residual liquid and has the following beneficial effects:

[0040] 1. In the present invention, through the arrangement of the water storage cavity and the water outlet pipe, the residual liquid spilled from the container will fall into the detection tank, then enter the water storage cavity through the water outlet hole, and then the residual liquid will be discharged through the water outlet pipe;

[0041] 2. In the utility model, by setting the flushing mechanism, it is convenient to supply water into the support pipe through the water inlet pipe, and at the same time flush the side wall of the water storage cavity through the flushing port, and then drain water outward through the water outlet pipe;

[0042] 3. In the utility model, through the setting of the cleaning mechanism, the operation of the first motor can drive the first gear to rotate, and at the same time, the meshing of the first gear and the annular rack drives the support tube and the flushing tube to rotate, and at the same time, the meshing of the first bevel gear and the second bevel gear drives the flushing tube to rotate, so that the crystals deposited in the water storage cavity can be cleaned by the cleaning bristles, thereby avoiding the crystals from affecting the operation of the chromatograph body;

[0043] 4. In the utility model, by setting the filtering mechanism, it is convenient to filter the water entering the fixed pipe through the filter plate and the activated carbon particles, thereby preventing impurities mixed in the water from entering the water storage cavity;

[0044] 5. In the utility model, by arranging the chromatograph body, the detection tank, the sealing door, the water storage cavity, the water outlet pipe, the water outlet hole and the flushing mechanism, it is convenient to clean the residual liquid and crystals in the water storage cavity through the flushing port on the surface of the flushing pipe and the cleaning bristles, thereby solving the problem in the prior art proposed in the background technology that residual liquid and crystals are easily generated during the operation of the headspace gas chromatograph, thereby affecting the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the three-dimensional structure of this application;

[0046] Figure 2 This is a schematic diagram of the cross-sectional structure of this application;

[0047] Figure 3 A schematic diagram of the flushing mechanism for this application;

[0048] Figure 4 This is a schematic diagram of the cross-sectional structure of the flushing mechanism of this application.

[0049] In the figure: 1. chromatograph body; 2. detection tank; 3. sealing door; 4. water outlet pipe; 5. support pipe; 6. support frame; 7. flushing pipe; 8. flushing port; 9. water inlet pipe; 10. fixed pipe; 11. first bevel gear; 12. second bevel gear; 13. annular rack; 14. filter plate. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] See also Figures 1 to 4A headspace gas chromatograph convenient for handling residual liquid comprises a chromatograph body 1, a detection tank 2, a sealing door 3, a water storage cavity, a water outlet pipe 4, a water outlet hole and a flushing mechanism, wherein the detection tank 2 is arranged on the chromatograph body 1, the sealing door 3 is arranged on the side wall of the detection tank 2, the water storage cavity is arranged on one side of the detection tank 2, the water outlet pipe 4 is arranged on the side wall of the water storage cavity, a water outlet control valve is arranged in the water outlet pipe 4, a plurality of water outlet holes are arranged, and a plurality of water outlet holes are arranged between the water storage cavity and the detection tank 2, and the flushing mechanism is arranged in the water storage cavity for cleaning the crystals precipitated from the residual liquid in the water storage cavity.

[0052] Among them, the flushing mechanism includes a first cavity, a support tube 5, a support frame 6, a flushing tube 7, a flushing port 8, a water inlet pipe 9 and a cleaning mechanism. The first cavity is opened on one side of the water storage cavity. The support tube 5 is rotatably set on the bottom wall of the first cavity. The support tube 5 penetrates the side wall of the first cavity and extends into the water storage cavity. The support tube 5 is sealed at one end away from the first cavity. The support frame 6 is set in plurality, and the plurality of support frames 6 are fixedly set on the support tube 5. The flushing tube 7 is rotatably set between the support frame 6 and the support tube 5. The flushing tube 7 extends into the support tube 5. Each flushing tube 7 is provided with a plurality of flushing ports 8. The water inlet pipe 9 is set on the chromatograph body 1, and the water inlet pipe 9 is connected to the support tube 5. The cleaning mechanism is set on the flushing tube 7 for cleaning the crystals in the water storage cavity.

[0053] Specifically, the residual liquid spilled from the container will fall into the detection groove 2, and then enter the water storage cavity through the water outlet hole, and then the residual liquid will be discharged through the water outlet pipe 4. At the same time, the operator connects the water inlet pipe 9 with the external water source, so that water can be supplied to the support tube 5 through the water inlet pipe 9, and the side wall of the water storage cavity is flushed through the flushing port 8, and then the water and the residual liquid retained in the water storage cavity are discharged to the outside through the water outlet pipe 4.

[0054] Among them, the cleaning mechanism includes cleaning bristles, a fixed tube 10, a first bevel gear 11, a second bevel gear 12 and a rotating mechanism. The cleaning bristles are evenly distributed on the flushing tube 7. The fixed tube 10 is fixedly arranged on the inner bottom wall of the first cavity corresponding to the water inlet pipe 9. The water inlet pipe 9 is connected to the fixed tube 10. The first bevel gear 11 is fixedly arranged on the side wall of the fixed tube 10, and the second bevel gear 12 is fixedly arranged on the side wall of the flushing tube 7. The first bevel gear 11 is meshed with the second bevel gear 12. The rotating mechanism is arranged in the first cavity for controlling the support tube 5 to rotate. The rotating mechanism includes an annular rack 13, a first gear and a first motor. The annular rack 13 is fixedly arranged on the support tube 5. The first gear is rotatably arranged in the first cavity. The first gear is meshed with the annular rack 13, and the output end of the first motor is fixedly connected to the first gear.

[0055] Specifically, the operator controls the operation of the first motor, thereby driving the support tube 5 to rotate through the meshing of the first gear and the annular rack 13, thereby driving the flushing tube 7 to move around the fixed tube 10 through the rotation of the support tube 5, and at the same time driving the flushing tube 7 to rotate through the meshing of the first bevel gear 11 and the second bevel gear 12, so that the crystals deposited in the water storage cavity can be cleaned by the cleaning bristles.

[0056] Among them, it also includes a filtering mechanism, which is arranged in the fixed tube 10 and is used to filter the water entering the first cavity. The filtering mechanism includes a filter plate 14 and activated carbon particles. The filter plate 14 is provided with two, and the two filter plates 14 are fixedly arranged in the fixed tube 10. The activated carbon particles are filled and arranged in the fixed tube 10 and are located between the filter plates 14. It also includes a spiral rod, which is fixedly arranged between the filter plates 14.

[0057] Specifically, in the process of supplying water into the support tube 5 through the water inlet pipe 9, the water can be cleaned by the filter plate 14 and the activated carbon particles, thereby preventing impurities in the water from entering the water storage cavity.

[0058] In summary, when the headspace gas chromatograph that is easy to handle residual liquid is in use, the residual liquid spilled from the operator's container will fall into the detection tank 2, and then enter the water storage cavity through the water outlet. After the chromatograph is finished working, the operator connects the water inlet pipe 9 with the external water source, so that water can be supplied to the support pipe 5 and the flushing pipe 7 through the fixed pipe 10. During the water intake process, the water can be cleaned by the filter plate 14 and the activated carbon particles, thereby preventing impurities in the water from entering the water storage cavity, and then during the water supply process, the side wall of the water storage cavity can be flushed through the flushing port 8. At the same time, the operator controls the first motor to work, thereby driving the support tube 5 to rotate through the meshing of the first gear and the annular rack 13, thereby driving the flushing tube 7 to move around the fixed tube 10 through the rotation of the support tube 5, and at the same time driving the flushing tube 7 to rotate through the meshing of the first bevel gear 11 and the second bevel gear 12, so that the crystals deposited in the water storage cavity can be cleaned by the cleaning bristles, and then the operator opens the water outlet pipe 4 to discharge the residual liquid in the water storage cavity out of the water storage cavity, thereby facilitating the discharge of the residual liquid from the chromatograph body 1.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A headspace gas chromatograph for facilitating the treatment of residual liquid, characterized in that: include: Chromatography instrument body (1); A detection slot (2), wherein the detection slot (2) is arranged on the chromatograph body (1); A sealing door (3), the sealing door (3) being arranged on a side wall of the detection slot (2); A water storage cavity, the water storage cavity being arranged on one side of the detection tank (2); A water outlet pipe (4), the water outlet pipe (4) being arranged on the side wall of the water storage cavity, and a water outlet control valve being arranged in the water outlet pipe (4); A water outlet hole, wherein the water outlet hole is provided in plurality, and the plurality of water outlet holes are arranged between the water storage cavity and the detection groove (2); A flushing mechanism is arranged in the water storage cavity and is used to clean crystals precipitated from residual liquid in the water storage cavity.

2. A headspace gas chromatograph for facilitating treatment of residual liquid according to claim 1, characterized in that: The flushing mechanism comprises: A first cavity, the first cavity is opened on one side of the water storage cavity; A support tube (5), the support tube (5) being rotatably arranged on the bottom wall of the first cavity, the support tube (5) penetrating the side wall of the first cavity and extending into the water storage cavity, and the support tube (5) being sealed at one end away from the first cavity; A support frame (6), wherein the support frame (6) is provided in plurality, and the plurality of support frames (6) are fixedly arranged on the support tube (5); A flushing pipe (7), wherein the flushing pipe (7) is rotatably arranged between the support frame (6) and the support pipe (5), and the flushing pipe (7) extends into the support pipe (5); Flushing ports (8), each of the flushing pipes (7) being provided with a plurality of the flushing ports (8); a water inlet pipe (9), the water inlet pipe (9) being arranged on the chromatograph body (1), the water inlet pipe (9) being in communication with the support pipe (5); A cleaning mechanism is arranged on the flushing pipe (7) and is used to clean crystals in the water storage cavity.

3. A headspace gas chromatograph for facilitating the treatment of residual liquid according to claim 2, characterized in that: The cleaning mechanism comprises: Cleaning bristles, the cleaning bristles being evenly distributed on the flushing tube (7); a fixed pipe (10), the fixed pipe (10) being fixedly arranged on the inner bottom wall of the first cavity corresponding to the water inlet pipe (9), and the water inlet pipe (9) being in communication with the fixed pipe (10); A first bevel gear (11), the first bevel gear (11) being fixedly arranged on a side wall of the fixed tube (10); A second bevel gear (12), the second bevel gear (12) being fixedly arranged on a side wall of the flushing pipe (7); Wherein, the first bevel gear (11) is meshed with the second bevel gear (12); A rotating mechanism, the rotating mechanism is arranged in the first cavity and is used to control the support tube (5) to rotate.

4. A headspace gas chromatograph for facilitating treatment of residual liquid according to claim 3, characterized in that: The rotating mechanism comprises: an annular rack (13), the annular rack (13) being fixedly arranged on the support tube (5); a first gear, the first gear being rotatably disposed in the first cavity, the first gear being meshed with the annular rack (13); A first motor, wherein an output end of the first motor is fixedly connected to the first gear.

5. A headspace gas chromatograph for facilitating treatment of residual liquid according to claim 4, characterized in that: It also includes a filtering mechanism, which is arranged in the fixed pipe (10) and is used to filter water entering the first cavity. The filtering mechanism includes: A filter plate (14), wherein two filter plates (14) are provided, and the two filter plates (14) are fixedly arranged in the fixed tube (10); Activated carbon particles are filled in the fixed tube (10) and located between the filter plates (14).

6. A headspace gas chromatograph for facilitating treatment of residual liquid according to claim 5, characterized in that: It also includes a spiral rod, which is fixedly arranged between the filter plates (14).

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