Pretreatment device of benzene series analyzer

Abstract

The utility model discloses a pretreatment device of a benzene series analyzer, which relates to the technical field of benzene series analysis and comprises a detection sensor and an integrated back plate, an upper inlet and a lower outlet of the detection sensor are respectively connected with a three-way valve, and the three-way valve at the outlet of the detection sensor is connected with a backwashing interface. The inlet of the three-way valve at the inlet of the detection sensor is connected with a secondary filter, the inlet of the secondary filter is connected with a primary filter, and the inlet of the primary filter is connected with a circulating pump. A sample detection pipeline and a backwashing pipeline of a detected sample are switched through a three-way valve, so that backwashing of the whole sample pipeline is realized, washing water is discharged to a wastewater pool, a pretreatment system adopts a multi-stage filtering device, the filtering precision is relatively stable, a target liquid is a clean liquid meeting the requirement of an analyzer after being pretreated, and the quality of the target liquid is improved. And the analysis accuracy and the detection reliability and stability of the detection medium can be ensured to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of benzene series analysis, in particular to a pretreatment device for a benzene series analyzer. Background Art

[0002] The BTEX analyzer pretreatment device is mainly used for pretreatment and online monitoring of wastewater containing BTEX in industrial production processes. Since wastewater containing BTEX is a kind of organic intermediate wastewater, if the wastewater containing BTEX is directly tested, it will contain a large amount of impurities, which will affect the detection accuracy. Therefore, we provide a BTEX analyzer pretreatment device to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that the wastewater containing benzene series is directly detected in the prior art, and the wastewater containing benzene series contains a large amount of impurities, which affects the detection accuracy, and provides a pretreatment device for a benzene series analyzer.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a benzene series analyzer pretreatment device, including a detection sensor and an integrated backplane, the upper and lower inlets of the detection sensor are respectively connected to three-way valves, the three-way valve at the outlet of the detection sensor is connected to a backwash interface, the inlet of the three-way valve at the inlet of the detection sensor is connected to a secondary filter, the inlet of the secondary filter is connected to a primary filter, and the inlet of the primary filter is connected to a circulation pump.

[0005] The backwash interface is connected to a clean water pipeline of a public works.

[0006] The primary filter is a 40-micron sintered stainless steel filter.

[0007] The secondary filter is a composite 20 micron filter.

[0008] The detection sensor, the circulation pump, the primary filter, the secondary filter and the three-way valve are all installed on the integrated back plate.

[0009] Compared with the prior art, the benzene series analyzer pretreatment device has the following beneficial effects:

[0010] The first-stage filter uses a 40-micron sintered stainless steel filter to filter larger particles and suspended solids. The filter has an independent backwashing function. The filter element is backwashed regularly according to the flushing indicator. The backwashing wastewater is discharged into the wastewater pool through the bypass outlet.

[0011] The secondary filter uses a 20-micron filter made of composite materials to filter out extremely small particles and suspended solids. The filter has an exhaust function to exhaust the pipeline entering the front end of the detection sensor to avoid bubbles affecting the sensor measurement. The filter shell is made of transparent material, and the sample filtering status can be directly observed;

[0012] The circulation pump can adjust the sample flow in the pipeline, provide a stable flow of samples for the detection sensor, achieve accurate measurement of the benzene content, and avoid deviations in the measurement results caused by flow fluctuations;

[0013] The sample to be tested is extracted by a circulation pump and then filtered through the primary filter and the secondary filter in turn, and then sent to the detection sensor through a three-way valve for detection. The sample after detection is switched between the sample detection pipeline and the backwashing pipeline through the three-way valve, thereby realizing the backwashing of the entire sample pipeline, and the flushing water is discharged into the wastewater pool. The pretreatment system adopts a multi-stage filtration device with relatively stable filtration accuracy. After pretreatment, the target liquid meets the clean liquid required by the analyzer, which can guarantee the accuracy of the detection medium analysis and the reliability and stability of the detection to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1. Detection sensor; 2. Circulation pump; 3. Primary filter; 4. Secondary filter; 5. Three-way valve; 6. Integrated backplane. DETAILED DESCRIPTION

[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0017] See also Figure 1 , a benzene series analyzer pretreatment device, comprising a detection sensor 1 and an integrated backplane 6, wherein the upper and lower inlets of the detection sensor 1 are respectively connected to three-way valves 5, the three-way valve 5 at the outlet of the detection sensor 1 is connected to a backwashing interface, the backwashing interface is connected to a clean water pipeline of a public project, the sample detection pipeline and the backwashing pipeline are switched by the three-way valve, so as to realize the backwashing of the entire sample pipeline, and the flushing water is discharged to a wastewater pool, the inlet of the three-way valve 5 at the inlet of the detection sensor 1 is connected to a secondary filter 4, the inlet of the secondary filter 4 is connected to a primary filter 3, the inlet of the primary filter 3 is connected to a circulation pump 2, the circulation pump 2 can adjust the sample flow in the pipeline, provide a sample with a stable flow rate for the detection sensor, realize the accurate measurement of the benzene series content, and avoid the deviation of the measurement result caused by flow fluctuation;

[0018] The first-level filter 3 uses a 40-micron sintered stainless steel filter to filter larger particles and suspended solids. The filter has an independent backwashing function. The filter element is backwashed regularly according to the flushing indicator. The backwashing wastewater is discharged to the wastewater pool through the bypass outlet;

[0019] The secondary filter 4 uses a 20-micron filter made of composite materials to filter out extremely small particles and suspended solids. The filter has an exhaust function to exhaust the pipeline entering the front end of the detection sensor to avoid bubbles affecting the sensor measurement. The filter shell is made of transparent material, and the sample filtering status can be directly observed;

[0020] The sample to be tested is extracted by the circulation pump 2 and then filtered in turn through the primary filter 3 and the secondary filter 4, and then sent to the detection sensor 1 through the three-way valve 5 for detection. The sample after detection is switched between the sample detection pipeline and the backwashing pipeline through the three-way valve, so as to realize the backwashing of the entire sample pipeline, and the flushing water is discharged into the wastewater pool. The pretreatment system adopts a multi-stage filtering device with relatively stable filtering accuracy. After pretreatment, the target liquid meets the clean liquid required by the analyzer, which can guarantee the accuracy of the detection medium analysis and the reliability and stability of the detection to the greatest extent.

[0021] The detection sensor 1, circulation pump 2, primary filter 3, secondary filter 4 and three-way valve 5 are all installed on the integrated back panel 6, which can be used for analysis cabinets with different requirements. The detection sensor is designed for quick release, and different types of sensors can be installed according to different detection requirements.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A benzene series analyzer pretreatment device, comprising a detection sensor (1) and an integrated backplane (6), characterized in that: The upper and lower inlets and outlets of the detection sensor (1) are respectively connected to three-way valves (5); the three-way valve (5) at the outlet of the detection sensor (1) is connected to a backwashing interface; the inlet of the three-way valve (5) at the inlet of the detection sensor (1) is connected to a secondary filter (4); the inlet of the secondary filter (4) is connected to a primary filter (3); and the inlet of the primary filter (3) is connected to a circulation pump (2).

2. The benzene series analyzer pretreatment device according to claim 1, characterized in that: The backwash interface is connected to a clean water pipeline of a public works.

3. The benzene series analyzer pretreatment device according to claim 1, characterized in that: The primary filter (3) is a 40-micron sintered stainless steel filter.

4. The benzene series analyzer pretreatment device according to claim 1, characterized in that: The secondary filter (4) is a 20-micron filter made of a composite material.

5. The benzene series analyzer pretreatment device according to claim 1, characterized in that: The detection sensor (1), the circulation pump (2), the primary filter (3), the secondary filter (4) and the three-way valve (5) are all mounted on an integrated back plate (6).

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