CN215297341U - Water body peculiar smell detection device - Google Patents

Abstract

The utility model discloses a water peculiar smell detection device relates to detecting instrument technical field. The water body peculiar smell detection device is provided with a shell, a sample pre-processor is fixedly arranged at the upper end of the shell, and an operation display screen is embedded in the front surface of the shell; a zero gas filter, a water vapor filter and a sensor cabin are arranged in the shell, a gas input end of the zero gas filter is communicated with the external environment of the shell, and a gas output end of the zero gas filter is communicated with the three-way electromagnetic valve; the gas input end of the water vapor filter is communicated with the sample pre-processor, the gas output end of the water vapor filter is communicated with the three-way electromagnetic valve, the three-way electromagnetic valve is connected with the sensor cabin body through a pipeline, and the sensor cabin body is connected with the air pump through a pipeline. The method adopts the metal oxide gas sensor array technology and combines with a corresponding quantitative fitting mathematical algorithm, and fits a quantitative prediction curve through a pattern recognition technology so as to achieve the purpose of rapidly detecting the odor degree of the water body.

Description

Water body peculiar smell detection device

Technical Field

The utility model belongs to the technical field of detecting instrument, especially, relate to a water peculiar smell detection device.

Background

At present, with the growth of the world population and the development of industrial and agricultural production, the water consumption is increasing day by day, and meanwhile, due to the production and the life of human beings, the surface water and the underground water are polluted, the water quality is deteriorated, and the limited water resources are more nervous. Under the condition, the state requires that each environment detection department well detects the water body, and the protection of the environmental water body is improved. The water is colorless and tasteless, but when the water body is polluted, whether chemical pollution or microbial pollution or excessive phytoplankton pollution, peculiar smell is generated in the water body, and the stronger the peculiar smell is, the heavier the pollution degree is. Therefore, the pollution degree of the water body can be evaluated by detecting the odor degree of the water body.

At present, the peculiar smell of the water body is mainly detected by the nose of a sniffer, and the sniffing result is often poorer in reproducibility due to the influence of factors such as individual difference of the sniffer, body and mood conditions during sniffing, and the like, and the sniffing result can not be uniformly compared, so that the real condition of water body pollution can not be accurately evaluated. Therefore, it is necessary to develop a device for rapidly and effectively detecting the odor degree of the water body.

The significance of solving the problems and the defects is as follows: through developing the equipment to the monitoring of water peculiar smell degree, to the scientific research personnel of environmental protection and the law enforcement personnel of environmental protection, just can obtain the peculiar smell condition of environmental water pollution fast, appraise the quality of water condition, can formulate the water treatment scheme to the peculiar smell degree, improve treatment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a water peculiar smell detection device.

The utility model is realized in such a way that the water body peculiar smell detection device is provided with a shell, a sample pre-processor is fixedly arranged at the upper end of the shell, and an operation display screen is embedded in the front of the shell;

a zero gas filter and a water vapor filter are arranged in the shell, a gas input end of the zero gas filter is communicated with the external environment of the shell, and a gas output end of the zero gas filter is communicated with the three-way electromagnetic valve; the gas input end of the water vapor filter is communicated with the sample pre-processor, and the gas output end of the water vapor filter is communicated with the three-way electromagnetic valve and is communicated with the sensor group through a pipeline;

the air pump is characterized in that the air inlet end of the air pump is connected with a sensor group, the air outlet end of the air pump is communicated with the outside of the shell through a pipeline, the sensor group is connected with a system mainboard, and the system mainboard is further connected with a three-way electromagnetic valve and an operation display screen through a data line.

Further, the inside of casing still installs rechargeable battery group, rechargeable battery group and system mainboard electric connection.

Further, the sensor group consists of an ammonia and amine response sensor, a sulfur group response sensor, a short-chain alkane response sensor and an aldol ether group response sensor.

Furthermore, a storage device is installed inside the system main board.

Further, the rechargeable battery pack is connected with a 220V commercial power or a 12V battery pack, and a charging device is installed on the rechargeable battery pack.

Further, the sample pre-processor is provided with a sample tank, and a heating device and a magnetic stirring device are arranged in the sample tank.

Furthermore, a touch display screen is adopted on the operation display screen.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

first, this water peculiar smell detection device integrated liquid sample pretreatment device to adopt metal oxide gas sensor array technique to combine corresponding quantitative fitting mathematical algorithm, through mode identification technology fitting quantitative prediction curve, so as to reach and distinguish the personnel's manual work of distinguishing and sniffing and distinguish, the peculiar smell degree of rapid analysis water sample.

Second, this water peculiar smell detection device's function is various, can portably use or use in the laboratory, gets water sample and puts into sample preprocessor, and rapid mixing preheats, generates effectual headspace sample gas, and after the instrument inhales headspace sample gas automatically, according to the different corresponding values of sensor group to the different compositions of sample gas, the peculiar smell degree of automatic analysis play water sample gives peculiar smell grade result value.

Thirdly, the water body peculiar smell detection device has a data storage function and can automatically store the detection result in an instrument. The water body peculiar smell detection device comprises a touch display screen, and is convenient for a user to operate. This water peculiar smell detection device contains the gas sampling mouth, and built-in air pump carries out bleeder sampling detection automatically, has inside self-cleaning of instrument and sensor automatic recovery function. The sensor zero self-calibration can be carried out.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a water body odor detection device provided by the embodiment of the present invention.

Fig. 2 is a detection schematic diagram of the water body odor detection device provided by the embodiment of the utility model.

In the figure: 1. a housing; 2. a zero gas filter; 3. a water vapor filter; 4. a three-way electromagnetic valve; 5. an air pump; 6. a sensor group; 7. a system motherboard; 8. charging the battery pack; 9. operating the display screen; 10. a sample pre-processor.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of other embodiments without departing from the spirit and scope thereof as defined by the appended claims.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," and the like are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The water body peculiar smell detection device is provided with a shell 1, a sample pre-processor 10 is fixedly arranged at the upper end of the shell 1, and an operation display screen 9 is embedded in the front surface of the shell 1; the casing 1 internally mounted is by a sensor group 6 of constituteing by four metal oxide sensors, contain system motherboard 7, this system motherboard contains storage module, be used for saving data, sample preprocessor 10, air pump 5, operation display screen 9, install the touch-sensitive screen computer on this operation display screen 9, three way solenoid valve 4, this three way solenoid valve 4 intercommunication zero gas circuit and sample gas circuit switch, zero gas filter 2, steam filter 3, rechargeable battery group 8, this rechargeable battery group 8 optional external 220V power is connected, also optional 12V group battery power supply of joining in marriage, and be furnished with the charger, and outer guard box.

This water peculiar smell detection device embeds treater before the sample 10, can place the sample cell of 100 ml beaker, and the sample cell has heating and magnetic stirring function, can fully release the peculiar smell gas that the aquatic was dissolved to carry out the headspace collection, the later stage is convenient for air pump 5 and is transmitted the sensor array detector of sensor group 6 to the headspace gas and carry out the detection and analysis.

The composition of the metal oxide sensor array is as follows: no. 1 is a sensor responding to ammonia gas and amines; no. 2 is a sensor responsive to sulfur-based groups (organosulfur and inorgano sulfur); no. 3 short chain alkane responsive sensors; no. 4 is an aldol ether group-responsive sensor. The sensor array responds to gas response signals volatilized by the water body, 4 sensors respond to 4 signals, the corresponding curve relation between the sensor signals and the water body odor degree is fitted through a PLS algorithm, and the PLS analysis model is pre-installed before the instrument is used.

The automatic software of the water body peculiar smell detection device has PCA principal component analysis and LDA linear correlation analysis algorithm, can perform cluster analysis, and performs qualitative judgment analysis on the water body peculiar smell type through Markov distance, Euclidean distance and DFA judgment algorithm.

According to the water body peculiar smell data information obtained by the analysis model, the water body peculiar smell grade is divided into 6 grades: grade 0 has no peculiar smell; grade 1 is slight peculiar smell, and the nose can be identified by smelling; grade 2 is mild peculiar smell, and the nose can be obviously identified; grade 3 is moderate odor, and people can smell strong odor; grade 4 is a severe odor, and people can smell a very strong odor; grade 5 is extra heavy odor, which is hard to bear by human nose.

According to the fact that the touch display screen is arranged, all operation processes are arranged on the operation screen of the instrument, analysis control software is arranged in the operation screen, and odor grade results are directly output.

The instrument has a main power switch, a charging interface and a USB interface for data derivation.

The use process comprises the following steps: starting a main power switch, lighting a screen, automatically checking the instrument into a standby state, wherein the gas circuit is in a zero gas starting state in the standby state, and automatically cleaning and zeroing the sensor; placing a sample cup containing the detected water body into a sample tank, setting heating temperature, stirring speed and treatment time (usually setting 60 ℃ for heating for 2 minutes, and magnetic stirring speed for 500r/min), and collecting stable headspace gas at the top of the sample tank after water body pretreatment; clicking detection, automatically switching a gas path to sample gas inlet by an instrument, starting analysis, and obtaining an analysis result, namely a peculiar smell grade after the analysis time is 45 seconds; the instrument then defaults back to a standby state, automatically performs sensor cleaning and zero calibration, and the next sample can be tested after a default time of 60 seconds.

The data result is stored by information such as operator, test time, sample serial number, test result and the like, historical data can be checked through a screen, and the data can also be downloaded to a computer for checking; the internal data information storage capacity of the instrument exceeds 5000 pieces.

The following advantages in terms of performance are achieved:

A. the sample temperature control range is as follows: room temperature to 90 ℃; stirring speed: 0-1000 r/min; time setting: 0-60 min;

B. the detection sensitivity is high, the stability is good, and the detection speed is high. The whole detection process is not higher than 5 minutes. The sensor array has a ppb level of response to gases and a variance of less than 5% for repeated detections of the same gas.

C. The method has good compatibility and environmental adaptability, and can detect the odor grade of different types of water bodies.

Other embodiments are disclosed. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims (7)

1. The device for detecting the peculiar smell of the water body is characterized by comprising a shell, wherein a sample preprocessor is fixedly arranged at the upper end of the shell, and an operation display screen is embedded in the front surface of the shell;

a zero gas filter and a water vapor filter are arranged in the shell, a gas input end of the zero gas filter is communicated with the external environment of the shell, and a gas output end of the zero gas filter is communicated with the three-way electromagnetic valve; the gas input end of the water vapor filter is communicated with the sample pre-processor, and the gas output end of the water vapor filter is communicated with the three-way electromagnetic valve and is communicated with the sensor group through a pipeline;

the air pump is characterized in that the air inlet end of the air pump is connected with a sensor group, the air outlet end of the air pump is communicated with the outside of the shell through a pipeline, the sensor group is connected with a system mainboard, and the system mainboard is connected with a three-way electromagnetic valve and an operation display screen through a data line.

2. The water body odor detection device according to claim 1, wherein a rechargeable battery pack is further installed inside the housing, and the rechargeable battery pack is electrically connected with the system main board.

3. The water body odor detection device according to claim 1, wherein the sensor group is composed of an ammonia gas and amine response sensor, a sulfur group response sensor, a short-chain alkane response sensor, and an aldol ether group response sensor.

4. The water body odor detection device according to claim 1, wherein a storage device is installed inside the system main board.

5. The water body odor detection device according to claim 2, wherein the rechargeable battery pack is connected with 220V commercial power or 12V battery pack, and a charging device is installed on the rechargeable battery pack.

6. The water body odor detection device according to claim 1, wherein the sample pre-processor is provided with a sample tank, and a heating device and a magnetic stirring device are installed inside the sample tank.

7. The water body odor detection device according to claim 1, wherein a touch display screen is adopted on the operation display screen.

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