Temperature-control nitrogen-blowing portable VOCs (volatile organic compounds) analysis device

Abstract

The utility model relates to the technical field of temperature control nitrogen blowing, in particular to a temperature control nitrogen blowing portable VOCs (Volatile Organic Compounds) resolving device which comprises a charging barrel, an upper cover is connected with the top of the charging barrel in an inserting and pulling manner, a gas outlet pipe and a gas inlet pipe are respectively connected with the interior of the upper cover in an inserting and pulling manner, a sleeve is sleeved outside the charging barrel, a heating sheet is arranged inside the sleeve, and a gas inlet pipe is connected with the gas inlet pipe in an inserting and pulling manner. A control screen is arranged outside the sleeve, a gas sampling pump is connected to the end, away from the upper cover, of the gas outlet pipe in a pluggable mode, the charging barrel and the upper cover are both made of glass materials, the upper cover is designed to be of a funnel type structure, and a through hole is formed in the upper cover; the external structure of the through hole is larger than the external structures of the gas outlet pipe and the gas inlet pipe, compared with an existing temperature-control nitrogen-blowing portable VOCs analysis device, the temperature-control nitrogen-blowing portable VOCs analysis device can be applied to different scenes through the gas inlet type design and the gas outlet type design, and the overall practicability is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of temperature-controlled nitrogen blowing technology, specifically to a portable VOCs analysis device with temperature-controlled nitrogen blowing. Background Technology

[0002] A temperature-controlled nitrogen evaporator is a device used for laboratory sample concentration. It uses nitrogen purging and heating to rapidly evaporate the solvent in the sample, thereby concentrating the sample. The temperature-controlled nitrogen evaporator adopts an independent gas path channel and a sealed structure to ensure that each sample is processed in an independent environment, preventing cross-contamination between different samples.

[0003] Existing technologies often employ solvent analysis or direct thermal analysis, which limits the application scenarios and fields. They can only collect samples using activated carbon tubes and then perform detection using the instrument's built-in thermal analysis device. This approach is expensive and has limited application scenarios, requiring analysis to be performed only in the laboratory. Furthermore, existing analysis devices are limited to the types of samples they can analyze, and cannot analyze complex sample matrices such as paint, water, food, and biological samples.

[0004] Therefore, it is particularly important to improve existing temperature-controlled nitrogen blowing portable VOCs analysis devices, design a new type of temperature-controlled nitrogen blowing portable VOCs analysis device to solve the above-mentioned technical defects, and improve the overall practicality of the temperature-controlled nitrogen blowing portable VOCs analysis device. Utility Model Content

[0005] The purpose of this invention is to provide a temperature-controlled nitrogen blowing portable VOCs desorption device. Through its overall design, it adopts two desorption modes: inlet and outlet, which can be applied to different scenarios to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A temperature-controlled nitrogen blowing portable VOCs analysis device includes a material cylinder, a top cover that is pluggable to the top of the material cylinder, a gas outlet pipe and a gas inlet pipe that are pluggable to the inside of the top cover, a sleeve that is fitted over the outside of the material cylinder, a heating element that is installed inside the sleeve, a control panel that is installed outside the sleeve, and a gas sampling pump that is pluggable to the end of the gas outlet pipe away from the top cover. Both the material cylinder and the top cover are made of glass.

[0008] As a preferred embodiment of this utility model, the upper cover has a funnel-shaped structure design, and a through hole is provided inside the upper cover. The external structure of the through hole is larger than the external structure of the gas outlet pipe and the gas inlet pipe. Both the gas outlet pipe and the gas inlet pipe extend into the interior of the material cylinder through the through hole.

[0009] As the preferred scheme of the utility model, the inside of the through hole is fixedly connected with rubber blocks, the side close to the rubber blocks is fixedly connected with arc-shaped plates, and the surface of the arc-shaped plates is fixedly connected with rubber particles.

[0010] As the preferred scheme of the utility model, the bottom of the upper cover is fixedly connected with a sealing ring, the top end of the inside of the barrel is provided with a groove, and the outer structure of the sealing ring is the same in size as the inner structure of the groove.

[0011] As the preferred scheme of the utility model, the outside of the sleeve is fixedly connected with reinforcing strips, the reinforcing strips are distributed at equal intervals, and the outside of the reinforcing strips is fixedly connected with connecting ears.

[0012] As the preferred scheme of the utility model, the inside wall of the sleeve is filled with sponge, and the sponge is polyurethane sponge.

[0013] As the preferred scheme of the utility model, the inside of the gas outlet pipe is provided with two groups, and the two groups of gas outlet pipes are threadedly connected with an absorption pipe, and the two ends of the absorption pipe are provided with threaded grooves.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. In the utility model, the sealing ring is extruded into the inside of the groove, the upper cover and the barrel as a whole are in a closed state, gas leakage is effectively prevented, after the gas outlet pipe and the gas inlet pipe are inserted into the inside of the through hole, the rubber particles are in contact with the outside of the gas outlet pipe and the gas inlet pipe, the friction with the two is increased, external force is effectively prevented from causing inclination, and the two analysis modes of the air inlet type and the air outlet type can be applied to different scenes.

[0016] 2. In the utility model, the gas sampling pump can accurately control the gas flow, the device is flexible, can be taken to the sampling site to analyze VOCs in the environmental sample on line, complete the overall chemical reaction, the barrel and the upper cover are both made of glass, which makes it difficult for stains to adhere to the surface, the waterproof performance of glass is also good, and water droplets are not easy to accumulate, and the cleaning process is further simplified,

[0017] 3. In the utility model, the upper cover and the barrel are detachably designed, convenient to carry, and the communication pipe is adapted to different use scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic view of the utility model;

[0019] Figure 2 It is the overall separation schematic view of the utility model;

[0020] Figure 3The sleeve structure schematic diagram of the utility model;

[0021] Figure 4 The utility model discloses a schematic diagram of the connecting pipe structure.

[0022] In the drawing: 1, the barrel; 101, the recess; 2, the upper cover; 201, the sealing ring; 3, the gas outlet pipe; 4, the gas inlet pipe; 5, the sleeve; 6, the gas sampling pump; 7, the through hole; 8, the rubber block; 9, the rubber particle; 10, the reinforcing strip; 11, the connecting lug; 12, the sponge; 13, the absorption pipe; 14, the screw groove. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without creative work on the basis of the embodiments in the utility model all belong to the range protected by the utility model.

[0024] Embodiment:

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0026] A kind of portable VOCs analytical device of temperature control nitrogen blowing, including barrel 1, the top of barrel 1 is plugged into connection with upper cover 2, the inside of upper cover 2 is plugged into connection with gas outlet pipe 3 and gas inlet pipe 4 respectively, the outside of barrel 1 is equipped with sleeve 5, the inside of sleeve 5 is equipped with heating sheet, the outside of sleeve 5 is equipped with control screen, the end of gas outlet pipe 3 away from upper cover 2 is plugged into connection with gas sampling pump 6, barrel 1 and upper cover 2 are made of glass material, by the measured material is filled into the inside of barrel 1, subsequently, upper cover 2 is buckled in the top of barrel 1, so that barrel 1 whole is in closed state, prevent external force interference, then barrel 1 is inserted into the inside of sleeve 5, total control is carried out by display screen, the driving of heating sheet is completed, heating sheet will emit heat conduction to barrel 1, finally, gas outlet pipe 3 and gas inlet pipe 4 are inserted into the inside of upper cover 2, simultaneously, gas sampling pump 6 is connected with gas outlet pipe 3, gas sampling pump 6 can carry out two items of work of gas outlet and gas inlet, can accurately control gas flow, device is flexible, can be taken to sampling scene to carry out online analysis to VOCs in environmental sample, complete overall chemical reaction, simultaneously, barrel 1 and upper cover 2 are made of glass material, the smooth surface, good waterproof performance and the characteristics of not easy to accumulate dirt of glass material, this makes dirt not easy to adhere to its surface, even if dust or other impurities is contaminated, can also be easily removed by simple wiping or using cleaning agent, in addition, the waterproof performance of glass is also good, not easy to accumulate water beads, further simplifies the cleaning process.

[0027] Further, in this embodiment, the upper cover 2 is designed in a funnel structure, a through hole 7 is formed in the inside of the upper cover 2, the outer structure of the through hole 7 is larger than the outer structure of the gas outlet pipe 3 and the gas inlet pipe 4, the gas outlet pipe 3 and the gas inlet pipe 4 extend to the inside of the barrel 1 through the through hole 7, the inside of the through hole 7 is fixedly connected with a rubber block 8, the side close to each other of the plurality of rubber blocks 8 is fixedly connected with an arc-shaped plate, the surface of the arc-shaped plate is fixedly connected with a rubber particle 9, after the gas outlet pipe 3 and the gas inlet pipe 4 are inserted into the inside of the through hole 7, the soft characteristic of the rubber block 8 swings after being in contact with the two, at the same time, the rubber particle 9 increases the friction with the two after being in contact with the outside of the gas outlet pipe 3 and the gas inlet pipe 4, effectively preventing the inclination caused by external force, and greatly improving the sealing performance, the two analysis modes of the air inlet type and the air outlet type can be applied to different scenes, the air inlet type is connected with nitrogen or other inert gases at the air inlet end, which can meet the analysis process of a large number of samples in the laboratory.

[0028] Further, in this embodiment, the bottom of the upper cover 2 is fixedly connected with a sealing ring 201, a groove 101 is formed in the top end of the inside of the barrel 1, the outer structure of the sealing ring 201 is the same as the inner structure of the groove 101, after the upper cover 2 is inserted into the inside of the barrel 1, the sealing ring 201 is pressed into the inside of the groove 101, realizing that the barrel 1 is in a closed state as a whole during use, effectively preventing gas leakage, through the detachable connection between the barrel 1 and the upper cover 2, and the detachable connection between the barrel 1 and the sleeve 5, it is convenient to clean the barrel 1 after use.

[0029] Further, in this embodiment, the outside of the sleeve 5 is fixedly connected with a reinforcing strip 10, the reinforcing strip 10 is distributed at equal intervals, the outside of the reinforcing strip 10 is fixedly connected with a connecting lug 11, through the design of the reinforcing strip 10, it is effectively prevented that the external force collides with the sleeve 5, and then damages the internal elements of the sleeve 5, causing damage, through the design of the connecting lug 11, it is convenient to take the sleeve 5.

[0030] Further, in this embodiment, the inside wall of the sleeve 5 is filled with a sponge 12, the sponge 12 is a polyurethane sponge, the polyurethane sponge has excellent heat preservation performance and softness, can flexibly adapt to the shape and curve of the building, has the characteristics of corrosion resistance, aging resistance, and non-water absorption, etc., at the same time, the heating sheet has a controllable heating analysis part, can adjust the analysis temperature, and effectively analyzes different matrix samples.

[0031] Further, in the embodiment, the inside of the gas outlet pipe 3 is provided with two groups, and the two groups of gas outlet pipes 3 are threadedly connected with the absorption pipe 13, both ends of the absorption pipe 13 are provided with threaded grooves 14, by rotating the threaded grooves 14 to the inside of the gas outlet pipe 3, a new pipeline is formed, which can analyze the soil, water, food and other substrates in the external environment, and can also analyze the paint, materials, biological materials and other samples in the workplace, and has wide application, and the VOCs in the sample analyzed by the device can be collected by using an activated carbon tube, a silica gel tube, an analysis liquid or a vacuum bottle, and then detected by using a laboratory instrument, so that the VOCs in the sample are accurately qualitatively and quantitatively determined.

[0032] In the embodiment, the implementation scene is specifically: by pouring the material to be measured into the inside of the barrel 1, then buckling the upper cover 2 on the top of the barrel 1, the sealing ring 201 is extruded into the inside of the groove 101, so that the upper cover 2 and the barrel 1 are in a closed state as a whole, which effectively prevents gas leakage, after the gas outlet pipe 3 and the gas inlet pipe 4 are inserted into the inside of the through hole 7, the soft characteristic of the rubber block 8 is contacted with the two, and swings, and the rubber particles 9 are contacted with the outside of the gas outlet pipe 3 and the gas inlet pipe 4, so as to increase the friction with the two, which effectively prevents the inclination caused by external force, and greatly improves the sealing performance, the two analysis modes of the air inlet type and the air outlet type can be applied to different scenes, the air inlet type is externally connected with nitrogen or other inert gases at the air inlet end, which can meet the analysis process of a large number of samples in the laboratory, the gas sampling pump 6 can accurately control the gas flow, the device is flexible, can be taken to the sampling site to analyze VOCs in the environmental sample online, complete the overall chemical reaction, and the barrel 1 and the upper cover 2 are made of glass material, the smooth surface, good waterproof performance and the characteristics that the glass material is not easy to accumulate stains, which makes the stains not easy to adhere to the surface, even if there is dust or other impurities, it can be easily removed by simple wiping or using cleaning agent, in addition, the glass has good waterproof performance and is not easy to accumulate water droplets, which further simplifies the cleaning process, by rotating the threaded grooves 14 to the inside of the gas outlet pipe 3, a new pipeline is formed, which can analyze the soil, water, food and other substrates in the external environment, and can also analyze the paint, materials, biological materials and other samples in the workplace, and has wide application, and the VOCs in the sample analyzed by the device can be collected by using an activated carbon tube, a silica gel tube, an analysis liquid or a vacuum bottle, and then detected by using a laboratory instrument, so that the VOCs in the sample are accurately qualitatively and quantitatively determined.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled nitrogen-blowing portable VOCs resolving device comprising a cartridge (1), characterized in that: The top of the barrel (1) is plug-connected with an upper cover (2), the inside of the upper cover (2) is plug-connected with a gas outlet pipe (3) and a gas inlet pipe (4) respectively, the outside of the barrel (1) is sleeved with a sleeve (5), the inside of the sleeve (5) is provided with a heating sheet, the outside of the sleeve (5) is provided with a control screen, the end of the gas outlet pipe (3) away from the upper cover (2) is plug-connected with a gas sampling pump (6), the barrel (1) and the upper cover (2) are both made of glass.

2. The temperature-controlled nitrogen purging portable VOCs resolving device according to claim 1, wherein: The upper cover (2) is designed in a funnel structure, a through hole (7) is arranged in the inside of the upper cover (2), the external structure of the through hole (7) is larger than the external structure of the gas outlet pipe (3) and the gas inlet pipe (4), the gas outlet pipe (3) and the gas inlet pipe (4) both extend to the inside of the barrel (1) through the through hole (7).

3. The temperature-controlled nitrogen-purged portable VOCs resolving device of claim 2, wherein: The inside of the through hole (7) is fixedly connected with a rubber block (8), the side of the rubber block (8) close to each other is fixedly connected with an arc-shaped plate, the surface of the arc-shaped plate is fixedly connected with a rubber particle (9).

4. The temperature-controlled nitrogen purging portable VOCs resolving device according to claim 1, wherein: The bottom of the upper cover (2) is fixedly connected with a sealing ring (201), the top of the inside of the barrel (1) is provided with a groove (101), the external structure of the sealing ring (201) is the same as the internal structure of the groove (101).

5. The temperature-controlled nitrogen-purged portable VOCs resolving device of claim 1, wherein: The outside of the sleeve (5) is fixedly connected with a reinforcing strip (10), the reinforcing strip (10) is distributed at equal intervals, the outside of the reinforcing strip (10) is fixedly connected with a connecting lug (11).

6. The temperature-controlled nitrogen purging portable VOCs resolving device according to claim 1, wherein: The inside wall of the sleeve (5) is filled with a sponge (12), the sponge (12) is a polyurethane sponge.

7. The temperature-controlled nitrogen purging portable VOCs resolving device according to claim 1, wherein: The inside of the gas outlet pipe (3) is provided with two groups, the two groups of gas outlet pipes (3) are threadedly connected with an absorption pipe (13), the two ends of the absorption pipe (13) are both provided with a threaded groove (14).

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