Multi-channel cross-contamination-free self-cleaning sampling analysis and fluid infusion system

Abstract

The utility model belongs to the technical field of sampling analysis, and particularly discloses a multi-channel cross-contamination-free self-cleaning sampling analysis and fluid infusion system. Comprising a display driving and control integrated screen, a plurality of sampling point storage tanks and a non-cross sample injection switching assembly which is used for being communicated with the sampling point storage tanks and has a self-cleaning function, the pretreatment valve assembly and the pretreatment standby valve assembly are used for carrying out simple pretreatment on a collected sample; the sampling analysis assembly is used for extracting a fluid sample at each measuring point and detecting material parameters of the fluid sample; according to the utility model, the non-cross sample injection switching assembly, the pretreatment valve assembly, the pretreatment standby valve assembly, the sampling analysis assembly and the non-cross sample discharge processing assembly which are communicated with the plurality of sampling point storage tanks are matched to form a circular processing system, and the system has a sampling analysis function, an automatic liquid supplementing function and an automatic cleaning function; the system is high in function integration level, the working intensity of sampling, analysis and liquid adding is greatly reduced, and application of various factories is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling analysis technical field, concretely is a kind of multi-channel self-cleaning sampling analysis and liquid supplementing system without cross-contamination. BACKGROUND

[0002] In biological medicine, environmental monitoring, inspection and quarantine, chemical industry and semiconductor industries, multiple samples need to be collected for detection and analysis, and the results of sample collection are used to adjust production process parameters, determine production process safety status or add relevant production materials to guide the next stage of work steps.

[0003] Currently, in actual production detection process, in order to save equipment investment cost, reduce the investment cost of detection instrument and maintenance workload, a set of detection system is often used to analyze multiple detection points; however, in the process of collecting multiple samples, cross contamination caused by residual materials in the sampling pipeline during switching of the collection channel often affects the accuracy of detection and analysis. In addition, after a long time of use, the analysis pipeline needs to be cleaned to avoid pipeline blockage caused by deposition or attachment of impurities in the sampling pipe, causing system failure. In some special factories or process sections, materials are easily attached or deposited, so manual daily pipeline cleaning and maintenance are required, greatly increasing the workload of maintenance personnel. Therefore, we need to propose a multi-channel self-cleaning sampling analysis and liquid supplementing system without cross-contamination to solve the above problems, so that it can integrate sampling, pretreatment, analysis and liquid addition functions, greatly reducing the work intensity of sampling, analysis and liquid addition, facilitating the application of various factories, and eliminating the cross contamination problem during sampling of each channel through the use of cross-free sampling switching components and cleaning functions, improving the accuracy of detection and analysis. SUMMARY

[0004] The utility model aims at providing a kind of multi-channel self-cleaning sampling analysis and liquid supplementing system without cross-contamination, which can integrate sampling, pretreatment, analysis and liquid addition functions, greatly reduce the work intensity of sampling, analysis and liquid addition, facilitate the application of various factories, and eliminate the cross contamination problem during sampling of each channel through the use of cross-free sampling switching components and cleaning functions, improve the accuracy of detection and analysis, to solve the problems proposed in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of multi-channel non-crossing pollution's self-cleaning sampling analysis and liquid supplementing system, including display drive integrated screen, multiple sampling point storage tanks, non-crossing sampling switching component for being communicated with multiple sampling point storage tanks and having self-cleaning function, pre-treatment valve component and pre-treatment standby valve component for carrying out simple pre-treatment to the sample collected and sampling analysis component for extracting each measurement point fluid sample and detecting fluid sample material parameter, the crossing sampling switching component is collected by switching different channels to gather fluid sample in different sampling point storage tank, one end of the non-crossing sampling switching component is communicated with one end of pre-treatment valve component and one end of pre-treatment standby valve component respectively, one end of the sampling analysis component is communicated with the other end of pre-treatment valve component and the other end of pre-treatment standby valve component respectively;

[0006] The other end of the sampling analysis component is communicated with non-crossing sample processing component for treating sample after analysis, the other end of the non-crossing sample processing component is communicated with multiple sampling point storage tanks respectively, and the display drive integrated screen is electrically connected with the non-crossing sampling switching component, the pre-treatment valve component, the pre-treatment standby valve component, the sampling analysis component and the non-crossing sample processing component respectively.

[0007] Preferably, the non-crossing sampling switching component includes a non-crossing sampling switching valve for communicating with multiple sampling point storage tanks, the non-crossing sampling switching valve is provided with multiple connection ports, one of the connection ports of the non-crossing sampling switching valve is communicated with a clean liquid tank, the other two connection ports of the non-crossing sampling switching valve are communicated with the pre-treatment valve component and the pre-treatment standby valve component, and the remaining connection ports of the non-crossing sampling switching valve are respectively communicated with multiple sampling point storage tanks.

[0008] Preferably, the pre-treatment valve component includes a first sampling opening and closing valve, the outlet end of the first sampling opening and closing valve is communicated with a first filter, the outlet end of the first filter is communicated with a first pressure regulating valve, the outlet end of the first pressure regulating valve is communicated with a first flow meter, and the outlet end of the first flow meter is communicated with a first sample outlet opening and closing valve.

[0009] Preferably, the pre-treatment standby valve component includes a second sampling opening and closing valve, the outlet end of the second sampling opening and closing valve is communicated with a second filter, the outlet end of the second filter is communicated with a second pressure regulating valve, the outlet end of the second pressure regulating valve is communicated with a second flow meter, and the outlet end of the second flow meter is communicated with a second sample outlet opening and closing valve.

[0010] Preferably, the sampling analysis component includes a sampling pump communicated with the outlet end of the first sample outlet opening and closing valve and the outlet end of the second sample outlet opening and closing valve respectively, the outlet end of the sampling pump is communicated with a sampling analyzer, and the outlet end of the sampling analyzer is communicated with the inlet end of the non-crossing sample processing component.

[0011] Preferably, the cross-free sample-out treatment assembly comprises a cross-free sample-out switching valve with seven channels, one of the channels of the cross-free sample-out switching valve is communicated with a waste liquid tank, another two of the channels of the cross-free sample-out switching valve are communicated with an outlet end of the sampling analyzer, and the remaining channels of the cross-free sample-out switching valve are respectively communicated with a plurality of sampling point storage tanks.

[0012] Preferably, the display and control integrated screen is connected with a communication port of the cross-free sample-in switching valve, the cross-free sample-out switching valve, the first sample-in switching valve, the second sample-in switching valve, the first flow meter, the second flow meter, the first sample-out switching valve, the second sample-out switching valve, the sampling pump and the sampling analyzer through communication cables respectively.

[0013] Preferably, the sampling analyzer is arranged as one or more of a concentration analyzer, a density analyzer and an optical analyzer.

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

[0015] 1. The utility model discloses a cross-free sample-in switching assembly, a pretreatment valve assembly, a pretreatment standby valve assembly, a sampling analysis assembly and a cross-free sample-out treatment assembly communicated with a plurality of sampling point storage tanks form a circulating treatment system, the system has sampling analysis function, automatic liquid supplementing function and automatic cleaning function, the system function integration degree is high, the sampling, analysis and liquid adding work intensity are greatly reduced, various factories are convenient to apply, and the automatic liquid supplementing function greatly reduces the complicated liquid adding operation, avoids contacting the chemical reagent that may harm the health of the human body, and guarantees the safety of the operating staff.

[0016] 2. The utility model discloses a cross-free sample-in switching assembly, eliminates the cross contamination problem when sampling in each channel, improves the detection analysis accuracy, simultaneously guarantees the cleanliness of the sampling pipeline, avoids the impurity blockage and adhesion problem after long time operation, and reduces the workload of the maintenance personnel who cleans the system. DETAILED DESCRIPTION

[0017] Figure 1 It is a process schematic diagram of the utility model;

[0018] Figure 2 It is a control logic schematic diagram of the utility model;

[0019] Figure 3 It is a connection structure schematic diagram of the utility model.

[0020] In the drawing: 10, cross-free sample-in switching valve; 20, cross-free sample-out switching valve; 30, pretreatment valve assembly; 31, first sample-in switching valve; 32, first filter; 33, first pressure regulating valve; 34, first flow meter; 35, first sample-out switching valve;

[0021] 40. Pretreatment backup valve assembly; 41. Second sample inlet switch valve; 42. Second filter; 43. Second pressure regulating valve; 44. Second flow meter; 45. Second sample outlet switch valve;

[0022] 50. Sampling pump; 60. Sampling analyzer; 70. Clean liquid tank; 80. Waste liquid tank; 90. Integrated display and control panel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-3 This utility model provides a technical solution: a multi-channel, cross-contamination-free, self-cleaning sampling analysis and replenishment system, including a display and control integrated screen 90, and multiple sampling point storage tanks (such as...). Figure 1 The components include: a non-cross-injection switching assembly (ST01, ST02, ST03, ST04, and ST05, all indicating sampling point tanks); a pretreatment valve assembly 30 and a pretreatment backup valve assembly 40 for simple pretreatment of collected samples; and a sampling analysis assembly for extracting fluid samples from various measurement points and detecting the material parameters of the fluid samples. The cross-injection switching assembly collects fluid samples from different sampling point tanks by switching different channels. One end of the non-cross-injection switching assembly is connected to one end of the pretreatment valve assembly 30 and one end of the pretreatment backup valve assembly 40, respectively. One end of the sampling analysis assembly is connected to the other end of the pretreatment valve assembly 30 and the other end of the pretreatment backup valve assembly 40, respectively. The pretreatment valve assembly 30 and the pretreatment backup valve assembly 40 are combined valve groups for simple pretreatment of the injected fluid, with functions of opening and closing, filtering, pressure regulation, and flow rate detection of the injected fluid.

[0025] The other end of the sampling and analysis component is connected to a non-cross-sampling processing component for processing the analyzed samples. The other end of the non-cross-sampling processing component is connected to multiple sampling point storage tanks. The integrated display and control screen 90 is electrically connected to the non-cross-sampling switching component, the pre-processing valve component 30, the pre-processing backup valve component 40, the sampling and analysis component, and the non-cross-sampling processing component.

[0026] The cross-free sample switching assembly includes a cross-free sample switching valve 10 for communication with a plurality of sampling point storage tanks, a plurality of connection ports are arranged on the cross-free sample switching valve 10, one of the connection ports of the cross-free sample switching valve 10 is communicated with a pure liquid tank 70, the other two connection ports of the cross-free sample switching valve 10 are communicated with a pre-treatment valve assembly 30 and a pre-treatment standby valve assembly 40, and the remaining connection ports of the cross-free sample switching valve 10 are respectively communicated with a plurality of sampling point storage tanks.

[0027] The pre-treatment valve assembly 30 includes a first sample inlet switch valve 31, an outlet end of the first sample inlet switch valve 31 is communicated with a first filter 32, an outlet end of the first filter 32 is communicated with a first pressure regulating valve 33, an outlet end of the first pressure regulating valve 33 is communicated with a first flow meter 34, and an outlet end of the first flow meter 34 is communicated with a first sample outlet switch valve 35.

[0028] The pre-treatment standby valve assembly 40 includes a second sample inlet switch valve 41, an outlet end of the second sample inlet switch valve 41 is communicated with a second filter 42, an outlet end of the second filter 42 is communicated with a second pressure regulating valve 43, an outlet end of the second pressure regulating valve 43 is communicated with a second flow meter 44, and an outlet end of the second flow meter 44 is communicated with a second sample outlet switch valve 45.

[0029] The first sample inlet switch valve 31, the second sample inlet switch valve 41, the first sample outlet switch valve 35 and the second sample outlet switch valve 45 can be ball valves, electromagnetic valves, needle valves, diaphragm valves and butterfly valves, preferably ball valves, and the actuator driving mode can be electric driving, gas driving, etc., preferably electric driving; the first pressure regulating valve 33 and the second pressure regulating valve 43 can be pressure reducing valves, needle valves and metering valves, preferably metering valves.

[0030] The first filter 32 and the second filter 42 are components for removing impurities in the sample fluid, and have the function of removing mechanical impurities in the fluid; they can be polypropylene melt-blown filter cartridges, sintered metal filters and mesh bag filters, preferably polypropylene melt-blown filter cartridges; the first flow meter 34 and the second flow meter 44 are components for measuring the flow of the sample fluid, and have the function of measuring the fluid flowing through the pipeline and data transmission; they can be electromagnetic flowmeters, volumetric flowmeters, Coriolis flowmeters and float flowmeters, preferably electromagnetic flowmeters.

[0031] The sampling analysis component includes a sampling pump 50 in communication with the outlet end of the first sampling switch valve 35 and the outlet end of the second sampling switch valve 45, respectively, and the outlet end of the sampling pump 50 is in communication with a sampling analyzer 60, and the outlet end of the sampling analyzer 60 is in communication with the inlet end of the cross-free sampling processing component. The sampling pump 50 is a transmission device for extracting fluid materials from each measurement point to the system, which has the functions of pumping fluid and controlling flow rate; it can be a peristaltic pump, a centrifugal pump, a diaphragm pump, a magnetic pump, a shielded pump, etc., and the preferred peristaltic pump in the present solution; the sampling analyzer 60 is a device for detecting the parameters of the sampling fluid, which has the functions of detecting the parameters of the sampling fluid and uploading the analysis data; the sampling analyzer 60 is set as one or more of a concentration analyzer, a density analyzer and an optical analyzer, which is selected according to the actual process analysis requirements, and multiple analyzers can also be connected in series or parallel in the pipeline for simultaneous measurement and analysis.

[0032] The cross-free sampling processing component includes a cross-free sampling switch valve 20 with seven channels, one of which is in communication with a waste tank 80, and the other two of which are in communication with the outlet end of the sampling analyzer 60, and the remaining channels are in communication with a plurality of sampling point storage tanks, respectively. The cross-free sampling switch valve 20 and the cross-free sampling switch valve 20 are pollution-free fluid cross-free switch valves that are not contaminated by other fluid inlets. They have the functions of connecting the valve body public channel and other sub-channels; preferably, the valve core is of the rotating type, and there is no common area between each sub-channel to ensure cross-free pollution.

[0033] The display and control integrated screen 90 is connected to the communication ports of the cross-free sampling switch valve 10, the cross-free sampling switch valve 20, the first sampling switch valve 31, the second sampling switch valve 41, the first flow meter 34, the second flow meter 44, the first sampling switch valve 35, the second sampling switch valve 45, the sampling pump 50 and the sampling analyzer 60 through communication cables, respectively.

[0034] The display and control integrated screen 90 is a device with the functions of collecting detection signals, inputting control parameters, outputting data signals, control signals, alarm signals and displaying relevant information. Specifically, the display and control integrated screen 90 can communicate with the data acquisition module to obtain signals of the non-crossing sample inlet switching valve 10, the non-crossing sample outlet switching valve 20, the first sample inlet switching valve 31, the second sample inlet switching valve 41, the first sample outlet switching valve 35, the second sample outlet switching valve 45, the first flow meter 34, the second flow meter 44 and the sample analyzer 60, and send control signals to the controlled devices such as the non-crossing sample inlet switching valve 10, the non-crossing sample outlet switching valve 20, the first sample inlet switching valve 31, the second sample inlet switching valve 41, the first sample outlet switching valve 35, the second sample outlet switching valve 45 and the sampling pump 50. The display and control integrated screen 90 can be a combination of a programmable controller and a touch screen, a programmable controller display integrated machine or a single-chip microcomputer device with display control, and is preferably a combination of a programmable controller and a touch screen.

[0035] When sampling and analyzing, the system closes the second sample inlet switching valve 41 and the second sample outlet switching valve 45 according to the detection requirements input on the display and control integrated screen 90, and then starts the non-crossing sample inlet switching valve 10 and the non-crossing sample outlet switching valve 20 to switch to the sampling channel of the corresponding sample point storage tank ST01, i.e. both valves are switched to the 1 port and the 7 port in communication, and then the sampling pump 50 is started. The sample fluid flows through the 1 and 7 ports of the non-crossing sample inlet switching valve 10, the first sample inlet switching valve 31, the first filter 32, the first pressure regulating valve 33, the first flow meter 34, the first sample outlet switching valve 35, enters the sampling analyzer 60 through the sampling pump 50, and then enters the 7 port of the non-crossing sample outlet switching valve 20 and returns to the sample point storage tank ST01 from the 1 port. The sampling analyzer 60 reports the completed data to the display and control integrated screen 90.

[0036] When automatically supplementing liquid, the system closes the second sample inlet switching valve 41 and the second sample outlet switching valve 45 according to the liquid supplement request input on the display and control integrated screen 90, and then starts the non-crossing sample inlet switching valve 10 to switch to the 6 and 7 ports in communication, and the non-crossing sample outlet switching valve 20 to switch to the 1 port and the 7 port in communication, i.e. the channel of the sample point storage tank ST01, and then starts the sampling pump 50. The material in the pure liquid tank 70 flows through the 6 and 7 ports of the non-crossing sample inlet switching valve 10, the first sample inlet switching valve 31, the first filter 32, the first pressure regulating valve 33, the first flow meter 34, the first sample outlet switching valve 35, enters the sampling analyzer 60 through the sampling pump 50, and then enters the 7 port of the non-crossing sample outlet switching valve 20 and enters the sample point storage tank ST01 from the 1 port, completing the liquid supplement operation.

[0037] When the automatic cleaning is performed, the system drives and controls according to the cleaning request input on the display control integrated screen 90, first closes the second sampling switch valve 41 and the second sampling switch valve 45, then starts the cross-free sampling switch valve 10 to switch to the communication between the port 6 and the port 7, the cross-free sampling switch valve 20 to switch to the communication between the port 6 and the port 7, i.e. the channel of the waste liquid tank 80, and then starts the sampling pump 50, so that the clean liquid tank 70 flows through the cross-free sampling switch valve 10, the first sampling switch valve 31, the first filter 32, the first pressure regulating valve 33, the first flow meter 34, the first sampling switch valve 35, enters the sampling analyzer 60 through the sampling pump 50, enters the cross-free sampling switch valve 20, is discharged into the waste liquid tank 80 through the port 6, and the cleaning operation is completed.

[0038] When the pre-treatment standby valve assembly 40 is switched, the system drives and controls according to the pre-treatment standby valve assembly 40 switching request input on the display control integrated screen 90, first closes the first sampling switch valve 31 and the first sampling switch valve 35, and opens the second sampling switch valve 41 and the second sampling switch valve 45, so that the pre-treatment valve assembly 30 is switched to be enabled, the valve in the pre-treatment valve assembly 30 can be removed for cleaning, the normal operation of the system is not affected, and the maintenance work of the system is greatly facilitated.

[0039] The cross-free sampling switch valve 10, the pre-treatment valve assembly 30, the pre-treatment standby valve assembly 40, the sampling pump 50, the sampling analyzer 60, the cross-free sampling switch valve 20 and the waste liquid tank 80 are communicated with a plurality of sampling point storage tanks to form a circulating treatment system, the system has the functions of sampling analysis, automatic liquid supplementing and automatic cleaning, the system has high integration degree, the working intensity of sampling, analysis and liquid supplementing is greatly reduced, the system is convenient for application in various factories, the automatic liquid supplementing function greatly reduces the complicated liquid supplementing operation, avoids the contact with chemical reagents which may harm the health of the human body, and guarantees the safety of the operating personnel; the cross-free sampling switch valve 10 and the clean liquid tank 70 are communicated to eliminate the cross contamination problem of the channels during sampling, improve the detection and analysis accuracy, guarantee the cleanliness of the sampling pipeline, avoid the problems of impurity blockage and adhesion after long time operation, and reduce the workload of the maintenance personnel for cleaning the system.

[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-channel, cross-contamination free, self-cleaning sampling, analysis and reagent replenishment system, characterized by: The device comprises a display and control integrated screen (90), a plurality of sampling point storage tanks, a cross-free sample switching assembly with self-cleaning function for communicating with the plurality of sampling point storage tanks, a pretreatment valve assembly (30) and a pretreatment standby valve assembly (40) for simple pretreatment of collected samples, and a sampling and analysis assembly for extracting fluid samples from each measurement point and detecting the material parameters of the fluid samples. The other end of the sampling and analysis assembly is communicated with a cross-free sample processing assembly for processing the analyzed samples, and the other end of the cross-free sample processing assembly is communicated with a plurality of sampling point storage tanks.

2. A multi-channel, non-cross contamination, self-cleaning sampling, analysis and reagent replenishment system according to claim 1, wherein: The cross-free sample switching assembly comprises a cross-free sample switching valve (10) for communicating with the plurality of sampling point storage tanks, and a plurality of connection ports are arranged on the cross-free sample switching valve (10).

3. A multi-channel, non-cross contamination, self-cleaning sampling, analysis and reagent replenishment system according to claim 2, wherein: The pretreatment valve assembly (30) comprises a first sample inlet switch valve (31), and the outlet end of the first sample inlet switch valve (31) is communicated with a first filter (32).

4. The multi-channel, non-cross contamination, self-cleaning sampling, analyzing and reagent replenishing system of claim 3, wherein: The pretreatment standby valve assembly (40) comprises a second sample inlet switch valve (41), and the outlet end of the second sample inlet switch valve (41) is communicated with a second filter (42).

5. A multi-channel, non-cross contamination, self-cleaning sampling, analysis and reagent replenishment system according to claim 4, wherein: The sampling and analysis assembly comprises a sampling pump (50) communicated with the outlet end of the first sample outlet switch valve (35) and the outlet end of the second sample outlet switch valve (45) respectively, and the outlet end of the sampling pump (50) is communicated with a sampling and analysis instrument (60), and the outlet end of the sampling and analysis instrument (60) is communicated with the inlet end of the cross-free sample processing assembly.

6. A multi-channel, non-cross contamination, self-cleaning sampling, analysis and reagent replenishment system as defined in claim 5, wherein: The cross-free sample-out processing assembly includes a cross-free sample-out switching valve (20) with seven channels, one of the channels of the cross-free sample-out switching valve (20) is communicated with a waste liquid tank (80), another two channels of the cross-free sample-out switching valve (20) are communicated with an outlet end of a sampling analyzer (60), and the remaining channels of the cross-free sample-out switching valve (20) are respectively communicated with a plurality of sampling point storage tanks.

7. A multi-channel, non-cross contamination, self-cleaning sampling, analysis and reagent replenishment system according to claim 6, wherein: The display and drive integrated screen (90) is connected with a communication port of the cross-free sample-in switching valve (10), the cross-free sample-out switching valve (20), the first sample-in switch valve (31), the second sample-in switch valve (41), the first flow meter (34), the second flow meter (44), the first sample-out switch valve (35), the second sample-out switch valve (45), the sampling pump (50) and the sampling analyzer (60) through communication cables respectively.

8. The multi-channel, non-cross contamination, self-cleaning sampling, analyzing and reagent replenishing system of claim 5, wherein: The sampling analyzer (60) is arranged as one or more of a concentration analyzer, a density analyzer and an optical analyzer.

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