Chemical sampling mechanism

Abstract

The utility model discloses a chemical sampling mechanism and relates to chemical equipment. A sampling mechanism for chemical engineering comprises a sampling bin, a filtering bin is arranged at the lower end of the sampling bin, a sampling pipe is arranged at the lower end of the filtering bin, an observation window is arranged on the sampling bin, the upper end of the sampling bin is communicated with an air flow pipe, and a pressure meter is arranged at the upper end of the air flow pipe. The upper end of the airflow pipe is provided with an air conveying connector and an air exhaust connector, the bin wall of the sampling bin is provided with a sampling connector, the sampling connector is connected with a storage tank, one side of the storage tank is provided with a first valve, the upper end of the storage tank is provided with a sealing cover, and the upper end of the sealing cover is provided with a second valve. A backflow connector is arranged at the lower end of the airflow pipe. According to the utility model, the purpose of accurately and quantitatively sampling is realized, the pollution in the liquid sampling process is avoided, the operation is simple, and the sampling and subsequent analysis efficiency and accuracy can be obviously improved.

Description

Technical Field

[0001] The utility model relates to chemical equipment, in particular to a sampling mechanism for chemical industry. Background Art

[0002] In the chemical production process, online and offline sampling and analysis operations are usually required, and obtaining consistent and reliable sampling and analysis results is the guarantee for efficient operation of chemical production. Once a problem occurs in the sampling system, it may cause significant losses.

[0003] Chemical sampling generally takes two forms: offline sampling and online sampling. The traditional offline sampling method is generally to install one or more offline samplers on the production system. Depending on the process, the sampler collects the sample in the sampling device, and then sends it to the central laboratory. The laboratory then takes quantitative samples from the sampling device for analysis and testing. In other words, the existing sampling devices generally do not have the function of quantitative sampling, or the quantitative sampling results that can be achieved are inaccurate, requiring the laboratory to use additional containers for measurement and storage. When the laboratory conducts component analysis, it may cause secondary pollution, resulting in low flexibility in the use of the sampling mechanism, affecting the accuracy and efficiency of subsequent sampling analysis.

[0004] In order to solve the above problems existing in the prior art, a sampling mechanism for chemical industry was developed. Utility Model Content

[0005] The utility model aims to provide a sampling mechanism for chemical industry, which solves the problem that the existing sampling structure cannot perform quantitative sampling, resulting in low flexibility of use and affecting the sampling efficiency.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A sampling mechanism for chemical industry comprises a sampling bin, a filtering bin is arranged at the lower end of the sampling bin, a sampling tube is arranged at the lower end of the filtering bin, an observation window is arranged on the sampling bin, an air flow tube is connected to the upper end of the sampling bin, a pressure gauge is arranged at the upper end of the air flow tube, a gas transmission interface and a gas extraction interface are arranged at the upper end of the air flow tube, a sampling interface is arranged on the bin wall of the sampling bin, the sampling interface is connected to a storage tank, a valve 1 is arranged on one side of the storage tank, a sealing cover is arranged at the upper end of the storage tank, a valve 2 is arranged at the upper end of the sealing cover, and a reflux interface is arranged at the lower end of the air flow tube.

[0008] Furthermore, a filter plate is provided at the upper end of the filter bin, the lower end of the sampling bin and the outer side of the filter plate are detachably connected via a mounting ring, the outer side of the filter plate and the upper end of the filter bin are detachably connected via a mounting ring, and the lower end of the filter bin and the sampling tube are fixedly connected via a flange, which facilitates the assembly of the sampling bin and the filter bin and the connection of the sampling tube.

[0009] The lower end of the airflow tube is connected to the upper end of the sampling chamber and communicated with each other. The lower end of the pressure gauge is connected to the upper end of the airflow tube and communicated with the inner side of the airflow tube, which facilitates the measurement of air pressure.

[0010] The gas supply interface and the inner side of the gas flow tube are connected to each other through the gas supply valve, and the gas extraction interface and the inner side of the gas flow tube are connected to each other through the gas extraction valve, which facilitates the control of gas flow and air pressure.

[0011] The sampling interface and the inner side of the airflow tube are connected to each other through a sampling valve, the sampling interface and the left end of valve one are detachably connected through a pipeline, the valve one is fixedly connected to the surface of the storage tank and is connected to the inner side of the storage tank, the storage tank is made of glass, and the surface of the storage tank is provided with a scale to facilitate quantitative sampling of the liquid.

[0012] The lower end of the sealing cover and the upper end of the storage tank are detachably connected, the lower end of the valve 2 is connected to the surface of the sealing cover, and extends to the lower end of the sealing cover and the inner side of the storage tank to be connected to each other, which is convenient for controlling the air pressure in the storage tank and switching the seal.

[0013] The reflux interface and the inner side of the airflow pipe are connected to each other through a reflux valve, and the reflux interface and the left end of valve 2 are detachably connected through a pipeline, which facilitates the reflux control of the airflow in the storage tank.

[0014] The utility model connects the sampling tube with the inner side of the reactor, and then connects the gas transmission interface and the air extraction interface with the gas transmission equipment and the air extraction equipment respectively, and controls the air extraction equipment to extract gas from the inner side of the sampling chamber, so that the gas pressure drives the liquid in the reactor to enter the sampling chamber after being filtered by the filter plate, and flows into the storage tank through the sampling interface through the valve 1, and observes the gas pressure state in the sampling chamber and the gas flow pipe through the pressure gauge, observes the filtrate height in the sampling chamber through the observation window, and judges the filtrate volume in the storage tank by observing the scale, so that the air extraction valve can be closed according to the needs, and the gas transmission valve can be opened to adjust the gas pressure of the inert gas input into the sampling chamber. Thereby, the liquid level in the sampling bin and the storage tank is controlled to realize quantitative sampling and collection of the filtrate; after the filtrate collection amount in the storage tank reaches the standard, valve one and valve two are closed, and inert gas is continuously input through the gas transmission equipment, so that the air pressure drives the filtrate to return from the sampling bin to the filtration bin, and return to the reactor through the sampling tube to avoid waste and pollution of the product. After closing the sampling valve and the reflux valve, the connection between the sampling interface, the reflux interface and valve one and valve two can be disconnected, and the storage tank can be removed for separate storage. At the same time, a new storage tank can be replaced as needed for the next round of sampling, and the sample can be taken out for testing later by opening the sealing cover.

[0015] Compared with the prior art, the utility model achieves the purpose of accurate and quantitative sampling, avoids contamination during the liquid sampling process, is simple to operate, and can significantly improve the efficiency and accuracy of sampling and subsequent analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the sampling chamber, the filtering chamber and the air flow tube of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the storage tank and the sealing cover of the utility model;

[0020] Figure 5 It is a front view half-section structure schematic diagram of the utility model.

[0021] In the figure: 1. sampling chamber; 2. filter chamber; 21. filter plate; 3. sampling tube; 4. observation window; 5. air flow tube; 6. pressure gauge; 7. gas supply interface; 71. gas supply valve; 8. air extraction interface; 81. air extraction valve; 9. sampling interface; 91. sampling valve; 10. storage tank; 101. scale; 11. valve one; 12. sealing cover; 13. valve two; 14. reflux interface; 141. reflux valve. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5A chemical sampling mechanism shown in the figure comprises a sampling chamber 1, a filter chamber 2 is arranged at the lower end of the sampling chamber 1, a sampling tube 3 is arranged at the lower end of the filter chamber 2, a filter plate 21 is arranged at the upper end of the filter chamber 2, the lower end of the sampling chamber 1 and the outer side of the filter plate 21 are detachably connected via a mounting ring, the outer side of the filter plate 21 and the upper end of the filter chamber 2 are detachably connected via a mounting ring, the lower end of the filter chamber 2 and the sampling tube 3 are fixedly connected via a flange, wherein the mounting ring is fixedly connected to the outer side of the filter plate 21, the mounting ring is respectively connected to the lower end of the sampling chamber 1 and the upper end of the filter chamber 2 via threads or buckles, and is sealedly connected to the lower end of the sampling chamber 1 and the upper end of the filter chamber 2 via a sealing strip; observation windows 4 are arranged on the front and rear sides of the sampling chamber 1, an airflow tube 5 is connected to the upper end of the sampling chamber 1, and a pressure gauge is arranged at the upper end of the airflow tube 5 The pressure gauge 6 is fixedly connected to the upper end of the gas flow tube 5 and connected to each other. The pressure gauge 6 is fixedly connected to the upper end of the gas flow tube 5 and connected to the inner side of the gas flow tube 5. A gas supply interface 7 is provided on the left side of the upper end of the gas flow tube 5, and a gas extraction interface 8 is provided on the right side of the upper end of the gas flow tube 5. The right end of the gas supply interface 7 and the inner side of the gas flow tube 5 are connected to each other through a gas supply valve 71, and the left end of the gas extraction interface 8 and the inner side of the gas flow tube 5 are connected to each other through a gas extraction valve 81. The sampling tube 3 is connected to the inner side of the reactor, and then the gas supply interface 7 and the gas extraction interface 8 are connected to the gas supply equipment and the gas extraction equipment respectively. The inner side of the sampling chamber 1 is evacuated by controlling the gas extraction equipment, so that the gas pressure drives the liquid in the reactor to enter the filter chamber 2 from the sampling tube 3, and enters the sampling chamber 1 after being filtered by the filter plate 21;A sampling interface 9 is provided on the right side of the sampling chamber 1, a storage tank 10 is provided on the right side of the sampling interface 9, a valve 11 is provided on the left side of the storage tank 10, the left end of the sampling interface 9 and the inner side of the airflow tube 5 are connected to each other through a sampling valve 91, the right end of the sampling interface 9 and the left end of the valve 11 are detachably connected through a pipeline, the right side of the valve 11 is fixedly connected to the surface of the storage tank 10, and is connected to the inner side of the storage tank 10, the storage tank 10 is made of glass, the surface of the storage tank 10 is provided with a scale 101, and the upper end of the storage tank 10 is provided with a sealing The sealing cover 12 is provided with a valve 13 at the upper end of the sealing cover 12. The lower end of the sealing cover 12 and the upper end of the storage tank 10 are detachably connected. The lower end of the valve 13 is fixedly connected to the surface of the sealing cover 12 and extends to the lower end of the sealing cover 12 and is connected to the inner side of the storage tank 10. A reflux interface 14 is provided on the right side of the lower end of the airflow pipe 5. The left end of the reflux interface 14 and the inner side of the airflow pipe 5 are connected to each other through a reflux valve 141. The right end of the reflux interface 14 and the left end of the valve 13 are detachably connected through a pipeline. The air pressure in the storage tank 10 is released through the valve 13. 13 and the reflux interface 14 are connected to the inner side of the sampling chamber 1, and the pressure state in the sampling chamber 1 and the gas flow tube 5 is observed through the pressure gauge 6 during the air extraction sampling process, the filtrate height in the sampling chamber 1 is observed through the observation window 4, and the filtrate volume in the storage tank 10 is judged by observing the scale 101, so that the air extraction valve 81 can be closed as needed, and the gas supply valve 71 can be opened to adjust the air pressure of the inert gas input into the sampling chamber 1, so as to control the liquid level in the sampling chamber 1 and the storage tank 10, and realize the quantitative sampling and collection of the filtrate. The filtrate collection volume in the storage tank 10 reaches After marking, close valve 11 and valve 2 13, continuously input inert gas through gas transmission equipment, so that the air pressure drives the filtrate from sampling chamber 1 back to filtering chamber 2, and returns to the reactor through sampling tube 3 to avoid product waste and pollution. After closing sampling valve 91 and reflux valve 141, the connection between sampling interface 9, reflux interface 14 and valve 11 and valve 2 13 can be disconnected, and the storage tank 10 can be removed for separate storage. At the same time, a new storage tank 10 can be replaced as needed for the next round of sampling, and the sample can be taken out for testing later by opening the sealing cover 12. ;

[0024] During use, the sampling tube 3 is connected to the inside of the reactor, and then the gas supply interface 7 and the air extraction interface 8 are connected to the gas supply equipment and the air extraction equipment respectively. The inside of the sampling chamber 1 is evacuated by controlling the air extraction equipment, so that the air pressure drives the liquid in the reactor to enter the filter chamber 2 from the sampling tube 3, enter the sampling chamber 1 after being filtered by the filter plate 21, and flow into the storage tank 10 from the sampling interface 9 through the valve 1 11. The air pressure in the storage tank 10 is balanced with the inside of the sampling chamber 1 through the connection of the valve 2 13 and the reflux interface 14. During the air extraction sampling process, the air pressure state in the sampling chamber 1 and the air flow tube 5 is observed by the pressure gauge 6, the filtrate height in the sampling chamber 1 is observed through the observation window 4, and the filtrate volume in the storage tank 10 is judged by observing the scale 101, so that the air extraction valve 81 can be closed as needed, and Open the gas supply valve 71 to adjust the air pressure of the inert gas input into the sampling chamber 1, thereby controlling the liquid level in the sampling chamber 1 and the storage tank 10, and realizing quantitative sampling and collection of the filtrate. After the filtrate collection amount in the storage tank 10 reaches the standard, close valve 11 and valve 2 13, and continuously input inert gas through the gas supply equipment, so that the air pressure drives the filtrate to return from the sampling chamber 1 to the filtration chamber 2, and return to the reactor through the sampling tube 3, so as to avoid waste and pollution of the product. After closing the sampling valve 91 and the reflux valve 141, the connection between the sampling interface 9, the reflux interface 14 and the valve 1 11 and the valve 2 13 can be disconnected, and the storage tank 10 can be removed for separate storage. At the same time, a new storage tank 10 can be replaced as needed for the next round of sampling, and the sample can be taken out for testing later by opening the sealing cover 12.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] 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 sampling mechanism for chemical industry, comprising a sampling chamber (1), characterized in that: The lower end of the sampling chamber (1) is provided with a filter chamber (2), the lower end of the filter chamber (2) is provided with a sampling tube (3), the sampling chamber (1) is provided with an observation window (4), the upper end of the sampling chamber (1) is connected to an airflow tube (5), the upper end of the airflow tube (5) is provided with a pressure gauge (6), the upper end of the airflow tube (5) is provided with a gas supply interface (7) and a gas extraction interface (8), the chamber wall of the sampling chamber (1) is provided with a sampling interface (9), the sampling interface (9) is connected to a storage tank (10), one side of the storage tank (10) is provided with a valve 1 (11), the upper end of the storage tank (10) is provided with a sealing cover (12), the upper end of the sealing cover (12) is provided with a valve 2 (13), and the lower end of the airflow tube (5) is provided with a reflux interface (14).

2. A chemical sampling mechanism according to claim 1, characterized in that: A filter plate (21) is provided at the upper end of the filter chamber (2); the lower end of the sampling chamber (1) and the outer side of the filter plate (21) are detachably connected via a mounting ring; the outer side of the filter plate (21) and the upper end of the filter chamber (2) are detachably connected via a mounting ring; and the lower end of the filter chamber (2) and the sampling tube (3) are fixedly connected via a flange.

3. A chemical sampling mechanism according to claim 1, characterized in that: The lower end of the airflow tube (5) is connected to the upper end of the sampling chamber (1) and is in communication with each other. The lower end of the pressure gauge (6) is connected to the upper end of the airflow tube (5) and is in communication with the inner side of the airflow tube (5).

4. A chemical sampling mechanism according to claim 1, characterized in that: The gas supply interface (7) and the inner side of the gas flow tube (5) are connected to each other via a gas supply valve (71), and the gas extraction interface (8) and the inner side of the gas flow tube (5) are connected to each other via a gas extraction valve (81).

5. A chemical sampling mechanism according to claim 1, characterized in that: The sampling interface (9) and the inner side of the air flow tube (5) are connected to each other via a sampling valve (91); the sampling interface (9) and valve one (11) are detachably connected via a pipeline; the valve one (11) is connected to the surface of the storage tank (10) and is connected to the inner side of the storage tank (10); the storage tank (10) is made of glass, and a scale (101) is provided on the surface of the storage tank (10).

6. A chemical sampling mechanism according to claim 1, characterized in that: The lower end of the sealing cover (12) and the upper end of the storage tank (10) are detachably connected, and the lower end of the second valve (13) is connected to the surface of the sealing cover (12) and extends to the lower end of the sealing cover (12) and the inner side of the storage tank (10) to be connected to each other.

7. A chemical sampling mechanism according to claim 1, characterized in that: The reflux interface (14) and the inner side of the airflow tube (5) are connected to each other via a reflux valve (141), and the reflux interface (14) and the left end of the second valve (13) are detachably connected via a pipeline.

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