Liquid closed sampling structure applied to reaction kettle

Abstract

The utility model provides a liquid closed sampling structure applied to a reaction kettle, which comprises the reaction kettle, a sampler and a pump body, a discharge port of the reaction kettle is connected with an inlet end of the sampler through a first pipeline, and an outlet end of the sampler is connected with an input end of the pump body through a second pipeline. A reflux inlet of the reaction kettle is connected with the output end of the pump body through a third pipeline, the second pipeline is connected with a sampling pipeline, an outlet of the sampling pipeline is connected with a sight glass, and a sampling cup is arranged at a bottom outlet of the sight glass. During sampling, the reflux valve is closed, the connection between the third pipeline and the reaction kettle is cut off, air is prevented from entering the reaction kettle, then the sampling valve is opened, and a sample intercepted by the inner pipe of the sampler is discharged; after sampling is completed, the sampling valve is closed, the backflow valve is opened, and the sample in the sampler flows back into the reaction kettle through the pump body. The sight glass is arranged at the end part of the sampling pipeline, so that the effect of storing samples can be achieved, repeated sampling is realized, and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a liquid closed sampling structure applied to a reaction kettle. Background Art

[0002] In the chemical production process, it is inevitable to encounter problems of process and finished product sampling and analysis. Since most of the raw materials used in chemical production are toxic, harmful, flammable and explosive chemicals, it is necessary to prevent sample pollution of the environment or harm to the human body during the sampling process. At present, many chemical enterprises still adopt an open sampling method. For example, a small rope is tied to the upper part of a sampling bottle and the sample is lifted through a manhole, or a sampling valve is arranged at the bottom of the reaction kettle, and the sample is put into an open sampling bottle from the sampling valve. This open sampling not only causes sample pollution and deviation of its accuracy, but also poses problems of threatening the safety of sampling personnel and polluting the environment. Content of the Utility Model

[0003] The utility model provides a liquid closed sampling structure applied to a reaction kettle, which can ensure the sealing of the sampling environment while facilitating sampling, and prevent the pollution of the reaction kettle sample.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A liquid closed sampling structure applied to a reaction kettle includes a reaction kettle, a sampler and a pump body. An outlet is arranged at the top of the reaction kettle, and the outlet is connected to the inlet end of the sampler through a first pipeline. A feed valve is installed on the first pipeline. The outlet end of the sampler is connected to the input end of the pump body through a second pipeline. A return port is arranged at the bottom of the reaction kettle, and the return port is connected to the output end of the pump body through a third pipeline. A return valve is installed on the third pipeline;

[0006] It further includes a sampling pipeline. One port of the sampling pipeline is connected to the second pipeline, and the other port is connected with a sight glass. The bottom outlet of the sight glass is connected with a sampling cup; a sampling valve is installed on the sampling pipeline.

[0007] Further, the pump body is a diaphragm pump.

[0008] Further, the sight glass is composed of a combination of glass material and stainless steel.

[0009] Further, scale lines are arranged on the inner wall of the sight glass.

[0010] Further, the feed valve, the return valve and the sampling valve are all one-way valves.

[0011] Compared with the prior art, the advantages or beneficial effects of the utility model are as follows:

[0012] When sampling, close the reflux valve, cut off the connection between the third pipeline and the reactor to prevent air from entering the reactor. Then open the sampling valve to release the sample intercepted in the inner tube of the sampler. After sampling is completed, close the sampling valve and open the reflux valve. The sample in the sampler flows back into the reactor through the pump body. A sight glass is provided at the end of the sampling pipeline for storing the sample. Sampling can be carried out through the sampling cup, enabling multiple samplings and improving the sampling efficiency. Brief Description of the Drawings

[0013] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, the present invention, its features, appearance, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the emphasis is on showing the gist of the present invention.

[0014] Figure 1 It is a schematic diagram of a liquid-tight sampling structure applied to a reactor;

[0015] In the figure, 1 is the reactor, 2 is the sampler, 3 is the pump body, 4 is the first pipeline, 5 is the feed valve, 6 is the second pipeline, 7 is the third pipeline, 8 is the reflux valve, 9 is the sampling pipeline, 10 is the sight glass, 11 is the sampling cup, and 12 is the sampling valve. Detailed Embodiment

[0016] Next, in combination with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0017] Please refer to the attached Figure 1, the present utility model provides a liquid closed sampling structure applied to a reaction kettle, which includes a reaction kettle 1, a sampler 2 and a pump body 3. An outlet is provided at the top of the reaction kettle 1, and the outlet is connected to the inlet end of the sampler 2 through a first pipeline 4. A feed valve 5 is installed on the first pipeline 1. The outlet end of the sampler 2 is connected to the input end of the pump body 3 through a second pipeline 6. A reflux port is provided at the bottom of the reaction kettle 1, and the reflux port is connected to the output end of the pump body 3 through a third pipeline 7. A reflux valve 8 is installed on the third pipeline 7. It further includes a sampling pipeline 9. One end of the sampling pipeline 9 is connected to the second pipeline 6, and the other end is connected to a sight glass 10. The bottom outlet of the sight glass 10 is connected to a sampling cup 11. A sampling valve 12 is installed on the sampling pipeline 9. During sampling, the reflux valve 8 is closed to cut off the connection between the third pipeline 7 and the reaction kettle 1 to prevent air from entering the reaction kettle 1. Subsequently, the sampling valve 12 is opened to discharge the sample intercepted by the inner tube of the sampler 2. After sampling is completed, the sampling valve 12 is closed and the reflux valve 8 is opened. The remaining sample in the sampler 2 flows back into the reaction kettle 1 through the pump body 3. During the whole sampling process, the sample is in a relatively closed space, which will not cause sample contamination. At the same time, it can prevent air from entering the reaction kettle and prevent the liquid in the reaction kettle from being contaminated.

[0018] Further explanation, the sight glass 10 is composed of glass material and stainless steel, and scale lines are provided on its inner wall. The inside of the sight glass is a closed space for storing samples. Sampling can be carried out through the sampling cup 11, which can realize multiple samplings and improve the sampling efficiency.

[0019] Further explanation, the pump body 3 is a diaphragm pump, and the feed valve 5, the reflux valve 8 and the sampling valve 12 are all one-way valves.

[0020] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A liquid sealed sampling structure for a reactor, comprising a reactor (1), a sampler (2) and a pump body (3), characterized in that: The top of the reactor (1) is provided with a discharge port, the discharge port is connected to the inlet end of the sampler (2) through a first pipe (4), a feed valve (5) is installed on the first pipe (4), the outlet end of the sampler (2) is connected to the input end of the pump body (3) through a second pipe (6), and the bottom of the reactor (1) is provided with a reflux port, the reflux port is connected to the output end of the pump body (3) through a third pipe (7), and a reflux valve (8) is installed on the third pipe (7); It also comprises a sampling pipeline (9), one end of the sampling pipeline (9) is connected to the second pipeline (6), the other end is connected to a sight glass (10), and the bottom outlet of the sight glass (10) is connected to a sampling cup (11); a sampling valve (12) is installed on the sampling pipeline (9).

2. The liquid sealed sampling structure applied to a reactor according to claim 1, characterized in that: The pump body (3) is a diaphragm pump.

3. The liquid sealed sampling structure for use in a reactor according to claim 1, characterized in that: The viewing mirror (10) is made of a combination of glass and stainless steel.

4. The liquid sealed sampling structure for use in a reactor according to claim 1, characterized in that: The inner wall of the viewing mirror (10) is provided with scale lines.

5. The liquid sealed sampling structure applied to a reactor according to claim 1, characterized in that: The feed valve (5), the reflux valve (8) and the sampling valve (12) are all one-way valves.

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