Extraction device for measuring oil in water body and use method of extraction device

Abstract

The invention discloses an extraction device for determining oil in a water body. The extraction device comprises an extraction bottle, a sample bottle and a reagent bottle, wherein the sample bottle and the reagent bottle are respectively connected with the extraction bottle; a mixing assembly is arranged in the extraction bottle, a discharging valve is arranged at the lower end of the extraction bottle, and feeding control modules are connected between the extraction bottle and the sample bottle and between the extraction bottle and the reagent bottle. Compared with the prior art, the extraction device for measuring the oil in the water body and the use method of the extraction device have the advantages that the extraction device is convenient to operate and use, and threats to the health of personnel are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil measurement in water bodies, and in particular to an extraction device for measuring oil in water bodies and a use method thereof. Background Art

[0002] At present, the determination of oil in water usually adopts the liquid-liquid extraction method, which relies on manual completion of independent steps such as sampling, mixing, extraction, and separation. For example, the operator needs to manually inject the sample and the extractant into the separatory funnel, shake and mix them several times, let them stand and separate them, and then slowly collect the extract through the separatory funnel valve.

[0003] When processing a large number of experimental samples, the operation process is relatively cumbersome and the efficiency is relatively low; gas needs to be released during the shaking process, and the organic solvents used have certain toxic effects on humans. Long-term use of this experiment is not conducive to the safety and health of operators. Therefore, it is urgent to develop an extraction device for the determination of oil in water. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide an extraction device for determining oil in water and a method of using the same which is easy to operate and use and reduces the threat to human health.

[0005] In order to solve the above technical problems, the present invention provides a technical solution as follows: an extraction device for determining oil in water, comprising an extraction bottle and a sample bottle and a reagent bottle respectively connected to the extraction bottle;

[0006] A mixing assembly is arranged in the extraction bottle, a discharge valve is arranged at the lower end of the extraction bottle, and a feeding control module is connected between the extraction bottle and the sample bottle and the reagent bottle.

[0007] Preferably, the extraction bottle is provided with interfaces for the sample bottle and the reagent bottle, and the feeding control module includes a flow sensor and a control valve connected to the interfaces;

[0008] The two groups of control valves are connected to the sample bottle and the reagent bottle respectively, and the sample bottle and the reagent bottle are fed to the extraction bottle through a liquid pump.

[0009] Preferably, an ultrasonic mixing component is connected to the extraction bottle.

[0010] Preferably, a waste liquid tank and a colorimetric tube are also provided at the lower end of the discharge valve.

[0011] Another aspect of the present invention discloses a method for determining oil in water, comprising the following steps:

[0012] Step 1: Pump the water sample into the extraction bottle;

[0013] Step 2: Pump the extractant into the extraction bottle;

[0014] Step 3: Mix the extractant and the water sample;

[0015] Step 4: static stratification;

[0016] Step 5: The water phase flows into the waste liquid tank through the discharge valve, and the oil solvent phase flows into the colorimetric tube;

[0017] Step 6: Clean the sample bottle.

[0018] Preferably, in step 3, mixing is performed by an ultrasonic component.

[0019] Preferably, step 6 includes sending clean water into the sample bottle for ultrasonic cleaning.

[0020] The advantages of the present invention over the prior art are that the steps of sample injection, mixing, extraction, and liquid separation are combined together in the present invention, thereby improving the measurement efficiency, saving manpower and material resources, and being more economical and applicable; avoiding contact between people and toxic gases, and ensuring the health and safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of the structure of an extraction device used for the determination of oil in water.

[0022] Figure 2 It is a flow chart of the method for determining oil in water. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Combined with Figure 1-2 As shown, an extraction device for determining oil in water comprises an extraction bottle and a sample bottle and a reagent bottle respectively connected to the extraction bottle; a mixing assembly is arranged in the extraction bottle, a discharge valve is arranged at the lower end of the extraction bottle, and a feeding control module is connected between the extraction bottle and the sample bottle and the reagent bottle.

[0025] The extraction bottle is provided with interfaces for the sample bottle and the reagent bottle, and the feeding control module includes a flow sensor and a control valve connected to the interface; two groups of control valves are connected to the sample bottle and the reagent bottle respectively, and the sample bottle and the reagent bottle are fed to the extraction bottle through a liquid pump;

[0026] When in use, an ultrasonic mixing component is connected to the extraction bottle, and a waste liquid tank and a colorimetric tube are also arranged at the lower end of the discharge valve.

[0027] In one embodiment:

[0028] The oil determination method comprises the following steps: step 1: pumping a water sample into an extraction bottle; step 2: pumping an extractant into an extraction bottle; step 3: mixing the extractant and the water sample; step 4: static stratification; step 5: flowing the water phase into a waste liquid tank through a discharge valve, and flowing the oil solvent phase into a colorimetric tube; step 6: cleaning the sample bottle.

[0029] In step 3, mixing is performed by an ultrasonic component, and in step 6, clean water is introduced into the sample bottle for ultrasonic cleaning.

[0030] When the present invention is implemented,

[0031] The extraction bottle is made of double-layer quartz glass with a volume of 500mL. There are three-channel interfaces on the top, which are connected to the sample bottle (1L capacity, containing water sample), the reagent bottle (500mL capacity, containing extraction agent) and the negative pressure exhaust channel (the end is connected to the adsorption tank)

[0032] The feeding control module consists of a micro solenoid valve (accuracy ±0.1mL) and a peristaltic pump. The injection volume is controlled by PLC programming. The flow sensor feeds back data to the control terminal in real time. The ultrasonic mixing component is integrated at the bottom of the extraction bottle with adjustable power. The discharge valve is a three-way solenoid valve resistant to organic solvents, which is connected to the waste liquid tank and the colorimetric tube. When the oil phase interface drops to the sensor position, the valve direction is automatically switched.

[0033] Start the preset program, the peristaltic pump accurately injects the water sample and the extractant into the extraction bottle. After ultrasonic mixing and standing for 2 minutes, the infrared sensor triggers the liquid separation valve, the lower water phase is discharged into the waste liquid tank, and the upper oil phase flows into the colorimetric tube. Use clean water to flush into the sample bottle for ultrasonic cleaning.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

[0036] The scope of the present invention is defined by the appended claims and their equivalents, and therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention as claimed but merely represents selected embodiments of the present invention.

[0037] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An extraction device for determining oil in water, characterized in that: It comprises an extraction bottle (1), and a sample bottle (2) and a reagent bottle (3) respectively connected to the extraction bottle (1); The extraction bottle (1) is provided with a mixing assembly (4), the lower end of the extraction bottle (1) is provided with a discharge valve (5), and a feeding control module is connected between the extraction bottle (1) and the sample bottle (2) and the reagent bottle (3).

2. The extraction device for determining oil in water according to claim 1, characterized in that: The extraction bottle (1) is provided with interfaces for cooperating with the sample bottle (2) and the reagent bottle (3), and the feeding control module comprises a flow sensor (6) and a control valve (7) connected to the interfaces; The two groups of control valves (7) are respectively connected to the sample bottle (2) and the reagent bottle (3), and the sample bottle (2) and the reagent bottle (3) are fed to the extraction bottle (1) through a liquid pump.

3. The extraction device for determining oil in water according to claim 1, characterized in that: The extraction bottle (1) is connected with an ultrasonic mixing component.

4. The extraction device for determining oil in water according to claim 1, characterized in that: A waste liquid tank (8) and a colorimetric tube (9) are also provided at the lower end of the discharge valve (5).

5. A method for determining oil in water, applied to the extraction device for determining oil in water according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Pump a water sample into an extraction bottle (1); Step 2: Pumping the extractant into the extraction bottle (1); Step 3: Mix the extractant and the water sample; Step 4: static stratification; Step 5: The water phase flows into the waste liquid tank (8) through the discharge valve (5), and the oil solvent phase flows into the colorimetric tube (9); Step 6: Clean the sample bottle (2).

6. The method for determining oil in water according to claim 5, characterized in that: In step 3, mixing is performed by an ultrasonic component.

7. The method for determining oil in water according to claim 5, characterized in that: The step 6 includes sending clean water into the sample bottle (2) for ultrasonic cleaning.

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