Automatic circulation temperature control quantitative sampling device

Abstract

The utility model discloses an automatic circulating temperature control quantitative sampling device, which belongs to the field of material sampling, comprises a sampling box, a quantitative bottle in the sampling box, a three-way valve a, a steam space heater, a material condenser, a sampling bottle, a sampling valve, a purge valve, a temperature measuring thermocouple and a three-way valve b, and is characterized in that the quantitative bottle is arranged in the sampling box; a three-way valve a is arranged above the top of the quantitative bottle through a pipeline, a nitrogen purging line is arranged on the three-way valve a, a purging valve is arranged on the nitrogen purging line, a three-way valve b is arranged below the bottom of the quantitative bottle through a pipeline, a material condenser and a temperature controller are arranged on the side edge of the sampling box, and a material pipeline of the material condenser is connected with the three-way valve b; a pipeline extends out of the right side of the three-way valve b and is communicated with a sampling bottle; a steam space heater and a temperature measuring thermocouple are embedded in the sampling box. The problems that in the sampling process, samples are not representative, the sampling number is not accurate, stub bars are multiple, and oxidation is prone to occurring when the sampling temperature is too high or crystallization is prone to occurring when the sampling temperature is too low are solved.

Description

Technical Field

[0001] This utility model belongs to the field of material sampling, specifically relating to an automatic circulating temperature-controlled quantitative sampling device. Background Technology

[0002] In the chemical production field, sampling and analyzing chemical reaction process products and final products is a crucial step in ensuring production quality and safety. However, traditional sampling methods have many drawbacks: limitations in sampling methods may prevent the sampled items from truly reflecting the overall material characteristics; for example, single-point sampling is insufficient to represent the homogeneity of complex reaction systems. Inappropriate sampling quantities can render the samples lacking statistical significance; for instance, too few samples may miss the changing trends of key components. Insufficient sample protection measures can easily lead to problems such as component volatilization, contamination, or changes in physical properties. All of these can result in inaccurate test results, leading to repeated testing, which not only increases manpower and material costs but may also delay the production process.

[0003] More importantly, some chemical products possess hazardous properties such as high temperature and strong corrosiveness. In the absence of safe sampling devices, direct contact with such samples by operators can lead to burns from high temperatures and skin burns, respiratory damage, and other serious safety incidents, posing a significant threat to the personal safety of samplers. Therefore, optimizing sampling techniques and equipping samples with safe and reliable devices are crucial for improving the accuracy, safety, and economy of chemical production. To this end, we propose an automatic circulating temperature-controlled quantitative sampling device. Utility Model Content

[0004] The purpose of this invention is to provide an automatic circulating temperature-controlled quantitative sampling device, which solves the problems of unrepresentative samples, inaccurate sampling quantity, excessive material head, and easy oxidation due to excessively high sampling temperature or easy crystallization due to excessively low sampling temperature during the sampling process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic circulating temperature-controlled quantitative sampling device, comprising a sampling box, a quantitative bottle inside the sampling box, a three-way valve a, a steam space heater, a material condenser, a sampling bottle, a sampling valve, a purge valve, a temperature measuring thermocouple, and a three-way valve b, characterized in that: a quantitative bottle is provided inside the sampling box; a three-way valve a is installed above the top of the quantitative bottle via a pipeline; a material circulation pipeline is installed on the three-way valve a; a purge valve is installed on the material circulation pipeline; a three-way valve b is installed below the bottom of the quantitative bottle via a pipeline; a material condenser and a temperature controller are installed on the side of the sampling box; the material pipeline of the material condenser is connected to the three-way valve b; a pipeline extends from the right side of the three-way valve b and connects to the sampling bottle; a steam space heater and a temperature measuring thermocouple are embedded inside the sampling box; and the temperature controller is connected to the temperature measuring thermocouple.

[0006] Preferably, material coolers are installed at both the inlet and outlet ends of the material condenser.

[0007] Preferably, a sampling valve is installed on the pipeline connecting the three-way valve b and the sampling bottle.

[0008] Preferably, the material condenser includes a cooling water inlet pipe, a cooling water outlet pipe, a condenser shell, and support legs.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. Circulation before sampling: This invention uses circulation instead of feeding, which can ensure that the sample taken is fresh and representative without generating excess material.

[0011] 2. Quantitative sampling: The volume of quantitative bottles was designed according to the amount of sample required for testing to ensure that the quality of each sample is the same, which ensures the testing needs while minimizing waste.

[0012] 3. Automatic temperature control: The temperature inside the sampling chamber is precisely controlled by a temperature controller, which can ensure that the material does not crystallize and that the temperature is not too high to harm the sampling operators.

[0013] 4. Cooling the sample: The high-temperature material is cooled to a suitable temperature by an external circulating cooling water condenser before entering the sampling chamber, which can reduce the corrosiveness of materials with corrosive properties and protect the sampling valves and pipelines.

[0014] 5. Easy to maintain: This invention is very simple and easy to operate and maintain, and it is highly safe. Attached Figure Description

[0015] Figure 1 This is a flowchart illustrating the present invention.

[0016] In the diagram: 1. Sampling box; 2. Quantitative bottle; 3. Three-way valve a; 4. Steam space heater; 5. Material condenser; 6. Sampling bottle; 7. Sampling valve; 8. Purge valve; 9. Temperature thermocouple; 10. Three-way valve b; 11. Temperature controller. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1This utility model provides a technical solution: an automatic circulating temperature-controlled quantitative sampling device, including a sampling box 1, a quantitative bottle 2 inside the sampling box, a three-way valve a3, a steam space heater 4, a material condenser 5, a sampling bottle 6, a sampling valve 7, a purge valve 8, a temperature measuring thermocouple 9, and a three-way valve b10. The device is characterized in that: the sampling box 1 contains a quantitative bottle 2; a three-way valve a3 is installed above the top of the quantitative bottle 2 via a pipeline; a material circulation pipeline is installed on the three-way valve a3; a purge valve 8 is installed on the material circulation pipeline; and a three-way valve b10 is installed below the bottom of the quantitative bottle 2 via a pipeline. When the three-way valve a3 and the three-way valve b10 are in the circulation position, continuously updated material enters and exits, ensuring sample freshness. Because the material enters from the bottom and exits from the top, filling the quantitative bottle 2, the same sample quality is ensured each time.

[0019] A material condenser 5 and a temperature controller 11 are installed on the side of the sampling box 1. The material pipeline of the material condenser 5 is connected to a three-way valve b10. A pipeline extends from the right side of the three-way valve b10 and connects to the sampling bottle 6. A steam space heater 4 and a temperature measuring thermocouple 9 are embedded in the sampling box 1. The temperature controller 11 is connected to the temperature measuring thermocouple 9. The temperature measuring thermocouple 9 measures the temperature of the space inside the sampling box 1. Then, by adjusting the temperature controller 11, the steam space heater 4 continuously heats the sampling box 1 to a constant temperature that prevents the material from crystallizing.

[0020] Material coolers are installed at both the inlet and outlet ends of the material condenser 5.

[0021] A sampling valve 7 is installed on the pipeline connecting the three-way valve b10 and the sampling bottle 6.

[0022] The material condenser 5 includes a cooling water inlet pipe, a cooling water outlet pipe, a condenser shell, and support legs.

[0023] Working principle: The metering bottle 2 is connected to the material circulation pipeline. Opening three-way valves a3 and b10 to the circulation position allows for continuous material flow in and out of the metering bottle 2, ensuring fresh sampling. Because the material flows from bottom to top and fills the metering bottle 2 completely, consistent sample quality is ensured each time. The outlet of the metering bottle 2 is connected to sampling valve 7 and sampling bottle 6. When three-way valves a3 and b10 are opened to the sampling position, material can be transferred from the metering bottle 2 into the sampling bottle 6 by gravity. The top inlet of the metering bottle 2 is connected to purge valve 8. Opening three-way valves a3 and b10 to the sampling position allows all remaining material in the metering bottle 2 to be purged into the sampling bottle 6 by opening purge valve 8, thus completing the sampling process.

[0024] It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic circulating temperature-controlled quantitative sampling device, comprising a sampling box (1), a quantitative bottle (2) inside the sampling box, a three-way valve a (3), a steam space heater (4), a material condenser (5), a sampling bottle (6), a sampling valve (7), a purge valve (8), a temperature measuring thermocouple (9), and a three-way valve b (10), characterized in that: The sampling box (1) is equipped with a metering bottle (2). A three-way valve a (3) is installed above the top of the metering bottle (2) via a pipeline. A material circulation pipeline is installed on the three-way valve a (3). A purge valve (8) is installed on the material circulation pipeline. A three-way valve b (10) is installed below the bottom of the metering bottle (2) via a pipeline. A material condenser (5) and a temperature controller (11) are installed on the side of the sampling box (1). The material pipeline of the material condenser (5) is connected to the three-way valve b (10). A pipeline extends from the right side of the three-way valve b (10) and connects to the sampling bottle (6). A steam space heater (4) and a temperature measuring thermocouple (9) are embedded in the sampling box (1). The temperature controller (11) is connected to the temperature measuring thermocouple (9).

2. The automatic circulating temperature-controlled quantitative sampling device according to claim 1, characterized in that: Material coolers are installed at both the inlet and outlet ends of the material condenser (5).

3. The automatic circulating temperature-controlled quantitative sampling device according to claim 1, characterized in that: A sampling valve (7) is installed on the pipeline connecting the three-way valve b (10) and the sampling bottle (6).

4. The automatic circulating temperature-controlled quantitative sampling device according to claim 1, characterized in that: The material condenser (5) includes a cooling water inlet pipe, a cooling water outlet pipe, a condenser shell, and support legs.

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