A high temperature resistant sample delivery device for an off-line organic carbon element carbon analyzer

Abstract

The present invention discloses a high temperature resistant sample delivery device for an offline organic carbon element carbon analyzer, comprising a bracket, a transverse movement mechanism, a high temperature furnace, a sample holder and a controller, wherein the transverse movement mechanism is arranged on the bracket, the high temperature furnace is arranged at one end of the bracket, the sample holder is arranged on the transverse movement mechanism, the sample holder can carry a quartz film sample into the high temperature furnace and can be sealed against the entrance of the high temperature furnace, and the transverse movement mechanism and the high temperature furnace are electrically connected to the controller respectively. The high temperature resistant sample automatic exchange device for an offline organic carbon element carbon analyzer of the present invention drives the sample holder carrying the quartz film sample to be pushed into the high temperature furnace for analysis through the transverse movement mechanism, thereby realizing the accurate analysis and measurement of carbonaceous aerosols, and when changing samples, the transverse movement mechanism pulls the quartz film sample out of the high temperature furnace again, waiting for another sample change analysis, the mechanism is simple and reliable, the material performance is stable at high temperature, the applicability is good, and the analysis and detection can be carried out more scientifically and accurately.

Description

Technical Field

[0001] The invention relates to the technical field of environmental monitoring instruments, in particular to a high temperature resistant sample sending and testing device of an off-line organic carbon element carbon analyzer. Background Art

[0002] Carbonaceous aerosols in the atmosphere are attracting more and more attention from scientists. It is reported that atmospheric haze caused by Southeast Asian forest fires and other factors related to carbonaceous aerosols can cause 500,000 premature deaths in South Asia every year. Carbonaceous aerosols are an important component of atmospheric fine particulate matter (PM2.5) and are also an important pollutant causing local and regional haze phenomena. Carbonaceous aerosols are divided into organic carbon and elemental carbon. Organic carbon is an important component of atmospheric aerosols. In severely polluted areas (especially in cities), organic carbon generally accounts for 10% to 70% of the mass of PM2.5. Therefore, using quartz filters to collect atmospheric particulate matter to identify the dynamic change trend of carbon sources in the formation, evolution and dissipation of haze will help to gain a deeper understanding of the causes of haze, and also provide important basic data for regional climate models.

[0003] In recent years, the research on carbonaceous aerosols has shown a significant growth trend at home and abroad. The research on the effects of carbonaceous aerosols on climate and environment has become one of the hot issues in the current international atmospheric chemistry research. Therefore, it is urgent to develop a set of domestic offline organic carbon element carbon analyzer products. Summary of the invention

[0004] The purpose of the present invention is to provide a high temperature resistant sample delivery device for an offline organic carbon element carbon analyzer to solve the problems existing in the above-mentioned prior art, so that the quartz film sample can automatically enter and exit the high temperature furnace to achieve accurate analysis and measurement of carbonaceous aerosols.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a high-temperature resistant sample delivery device for an offline organic carbon element carbon analyzer, comprising a bracket, a transverse movement mechanism, a high-temperature furnace, a sample holder and a controller, wherein the transverse movement mechanism is arranged on the bracket, the high-temperature furnace is arranged at one end of the bracket, and the sample holder is arranged on the transverse movement mechanism. The sample holder can carry a quartz film sample into the high-temperature furnace and can be sealed against the entrance of the high-temperature furnace, and the transverse movement mechanism and the high-temperature furnace are electrically connected to the controller respectively.

[0007] Preferably, the transverse movement mechanism comprises a servo motor and a lead screw, the servo motor is connected to the lead screw, a sliding nut is provided on the lead screw, and the sample holder is provided on the sliding nut.

[0008] Preferably, the sample holder comprises a film support arm, a plug and a support, the support is arranged on the sliding nut, the support is sequentially connected to the plug and the film support arm, a groove for placing the quartz film sample is arranged at the end of the film support arm, and the film support arm is arranged colinearly with the high-temperature furnace.

[0009] Preferably, a temperature probe is embedded in the film supporting arm, the temperature probe can be in contact with the quartz film sample, and the temperature probe is electrically connected to the controller.

[0010] Preferably, the blockage includes a top block, a spring and a slider, the top block is arranged on the support, a short shaft is protruded on one end surface of the top block, the spring and the slider are sequentially sleeved on the short shaft, the slider is loosely matched with the short shaft, the short shaft is connected to the membrane support arm, and the slider matches the sealing ring at the inlet of the high-temperature furnace.

[0011] Preferably, a pair of photoelectric switches are provided on the bracket, the photoelectric switches are respectively located at both ends of the lead screw, and a shading sheet matching the photoelectric switches is provided on the sliding nut, and the photoelectric switches are electrically connected to the controller.

[0012] Preferably, the high temperature furnace comprises a reaction furnace and a heating wire, the reaction furnace is cylindrical, the heating wire is wound outside the reaction furnace, and the heating wire is electrically connected to the controller.

[0013] Preferably, the bracket is an integrated bracket or a split bracket respectively arranged at both ends of the transverse movement mechanism.

[0014] Compared with the prior art, the present invention has achieved the following technical effects:

[0015] The high temperature resistant sample automatic changing device for an offline organic carbon element carbon analyzer of the present invention manually or automatically adds offline quartz film samples on a sample holder, and drives the sample holder carrying the quartz film samples to be pushed into a high temperature furnace for analysis by a transverse movement mechanism, thereby realizing accurate analysis and measurement of carbonaceous aerosols. When changing samples, the transverse movement mechanism drives the sample holder carrying the quartz film samples to be pulled out of the high temperature furnace, waiting for another sample change and analysis. The present invention has a simple and reliable mechanism, stable material performance at high temperatures, good applicability, and can perform analysis and detection more scientifically and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The structure of the high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The structure of the high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 It is a structural schematic diagram of the high temperature furnace in the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the plugging in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the membrane supporting arm in the present invention;

[0022] Among them: 1-heating wire, 2-reaction furnace, 3-slider, 4-support, 5-spring, 6-quartz film sample, 7-film supporting arm, 8-temperature probe, 9-light shielding sheet, 10-bracket, 11-sealing ring, 12-sealing ring, 13-photoelectric switch, 14-screw, 15-servo motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a high temperature resistant sample delivery device for an offline organic carbon element carbon analyzer to solve the problems existing in the prior art, so that quartz film samples can automatically enter and exit the high temperature furnace to achieve accurate analysis and measurement of carbonaceous aerosols.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 5 As shown: This embodiment provides a high-temperature resistant sample delivery device for an offline organic carbon element carbon analyzer, including a bracket 10, a transverse movement mechanism, a high-temperature furnace, a sample holder and a controller. The transverse movement mechanism is arranged on the bracket 10, the high-temperature furnace is arranged at one end of the bracket 10, and the sample holder is arranged on the transverse movement mechanism. The sample holder can carry the quartz film sample 6 into the high-temperature furnace and can be sealed against the entrance of the high-temperature furnace. The transverse movement mechanism and the high-temperature furnace are electrically connected to the controller respectively.

[0027] The transverse movement mechanism includes a servo motor 15 and a lead screw 14. The servo motor 15 is connected to the lead screw 14. A sliding nut is provided on the lead screw 14. A sample holder is provided on the sliding nut. The sample holder includes a film support arm 7, a plug and a support 4. The support 4 is provided on the sliding nut. The support 4 is connected to the plug and the film support arm 7 in sequence. A groove for placing a quartz film sample 6 is provided at the end of the film support arm 7. The film support arm 7 is provided in line with the high-temperature furnace. The material of the film support arm 7 is quartz or other materials resistant to 900° high temperature. The plug includes a top block, a spring 5 and a slider 3. The top block is provided on the support 4. A short shaft is protruded on one end surface of the top block. The spring 5 and the slider 3 are sleeved on the short shaft in sequence. The slider 3 is fitted with a clearance between the short shaft. The spring 5 is located between the slider 3 and the top block. The short shaft is connected to the film support arm 7. The slider 3 matches the sealing ring 11 at the entrance of the high-temperature furnace. A sealing ring 12 is provided on the sealing ring 11. The film support arm 7 is embedded with a temperature probe 8, which can contact the quartz film sample 6 and is electrically connected to the controller. The high temperature furnace includes a reaction furnace 2 and a heating wire 1, the reaction furnace 2 is cylindrical, the heating wire 1 is wound outside the reaction furnace 2, and the heating wire 1 is electrically connected to the controller.

[0028] The bracket 10 is an integrated bracket or a split bracket respectively arranged at both ends of the transverse movement mechanism. A pair of photoelectric switches 13 are arranged on the bracket 10, and the photoelectric switches 13 are respectively located at both ends of the lead screw 14, and a light shielding sheet 9 matching the photoelectric switches 13 is arranged on the sliding nut, and the photoelectric switches 13 are electrically connected to the controller.

[0029] When this embodiment is used, the temperature in the high-temperature furnace is first adjusted to the set temperature, and the quartz film sample 6 is placed in the groove at the end of the film support arm 7. The controller controls the servo motor 15 to drive the sample bracket on the lead screw 14 to move into the high-temperature furnace. When the light shielding sheet 9 reaches the photoelectric switch 13 on the end of the bracket 10, the photoelectric switch 13 feeds back the electrical signal to the controller, and the controller controls the servo motor 15 to stop moving, and the slider 3 just squeezes the sealing ring 12 on the sealing ring 11. At the same time, the spring 5 deforms and squeezes the slider 3 to achieve the effect of end face sealing, and the organic carbon element carbon analyzer can start analysis. After the detection is completed, the controller controls the servo motor 15 to reverse, so that the sample bracket on the lead screw 14 moves in the opposite direction. When the light shielding sheet 9 reaches the photoelectric switch 13 on the rear end of the bracket 10, it stops moving, and the quartz film sample 6 can be replaced at this time.

[0030] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A high temperature resistant sample delivery device for an off-line organic carbon element carbon analyzer, characterized in that: It comprises a support, a transverse movement mechanism, a high temperature furnace, a sample holder and a controller, wherein the transverse movement mechanism is arranged on the support, the high temperature furnace is arranged at one end of the support, the sample holder is arranged on the transverse movement mechanism, the sample holder can carry a quartz film sample into the high temperature furnace and can be sealed against the entrance of the high temperature furnace, and the transverse movement mechanism and the high temperature furnace are electrically connected to the controller respectively; The transverse movement mechanism includes a servo motor and a lead screw, the servo motor is connected to the lead screw, a sliding nut is provided on the lead screw, the sample holder is provided on the sliding nut, the sample holder includes a film support arm, a plug and a support, the support is provided on the sliding nut, the support is connected to the plug and the film support arm in sequence, the end of the film support arm is provided with a groove for placing the quartz film sample, the film support arm and the high-temperature furnace are arranged in line; the plug includes a top block, a spring and a slider, the top block is arranged on the support, a short shaft is protruding on one end surface of the top block, the spring and the slider are sequentially sleeved on the short shaft, the slider is clearance-matched with the short shaft, the short shaft is connected to the film support arm, and the slider matches the sealing ring at the entrance of the high-temperature furnace.

2. The high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer according to claim 1 is characterized in that: A temperature probe is embedded in the film supporting arm. The temperature probe can contact the quartz film sample, and the temperature probe is electrically connected to the controller.

3. The high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer according to claim 1 is characterized in that: A pair of photoelectric switches is arranged on the bracket, the photoelectric switches are respectively located at the two ends of the lead screw, and a light shielding sheet matching the photoelectric switches is arranged on the sliding nut, and the photoelectric switches are electrically connected to the controller.

4. The high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer according to claim 1, characterized in that: The high temperature furnace comprises a reaction furnace and a heating wire, the reaction furnace is cylindrical, the heating wire is wound outside the reaction furnace, and the heating wire is electrically connected to the controller.

5. The high temperature resistant sample delivery device of the off-line organic carbon element carbon analyzer according to claim 1, characterized in that: The bracket is an integrated bracket or a split bracket respectively arranged at two ends of the transverse movement mechanism.

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