CN215004984U - Damping sampling device of water quality heavy metal on-line monitoring instrument - Google Patents

Abstract

The utility model provides a quality of water heavy metal on-line monitoring appearance's damping sampling device, include: the device comprises a mixing sample injector, a damping pipe, a gas carrying pipe and a buffer pipe; the mixing sample injector is provided with a reagent port, a carrier gas port and a mixed liquid outlet; the reagent mouth is a plurality of, and every reagent mouth all is connected with a damping tube, carries the gas port and carries the trachea to be connected, mixes the liquid export and is connected with the buffer tube. The utility model provides a quality of water heavy metal on-line monitoring appearance's damping sampling device can effectively reduce reagent and mix the influence of back violent reaction to reagent sampling flow.

Description

Damping sampling device of water quality heavy metal on-line monitoring instrument

Technical Field

Field of environmental protection

Background

The laboratory atomic fluorescence analyzer generally adopts continuous flow sample introduction to detect heavy metals in water quality, a plurality of reagents are required to simultaneously mix a mixed water sample and a potassium borohydride solution through a peristaltic pump, a carrier gas is added, and mixed liquid of violent reaction, generated gaseous hydride and hydrogen are brought into a gas-water separator with a water seal. Because the acid-containing water sample and the strong reducing agent potassium borohydride meet each other, violent reaction can generate a large amount of bubbles and hydrogen, and the pressure is increased, reverse resistance can be generated for the peristaltic pump, the amount of various reagents when liquid is mixed can be changed, the stability of a spectral curve can be directly influenced, and the data repeatability is poor during the test of an instrument.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a quality of water heavy metal on-line monitoring appearance's damping sampling device can effectively reduce reagent and mix the influence of back violent reaction to reagent appearance flow.

The utility model provides a quality of water heavy metal on-line monitoring appearance's damping sampling device, include: the device comprises a mixing sample injector, a damping pipe, a gas carrying pipe and a buffer pipe; the mixing sample injector is provided with a reagent port, a carrier gas port and a mixed liquid outlet; the reagent mouth is a plurality of, every the reagent mouth all is connected with one the damping tube, carry the gas port with carry the trachea and be connected, mix the liquid export with the buffer tube is connected.

The utility model provides a quality of water heavy metal on-line monitoring appearance's damping sampling device's theory of operation as follows: during operation, reagent advances the appearance through the damping tube, and the damping tube has increased the flow damping of reagent to alleviate the violent reaction after the reagent mixes and to the influence of preceding stage flow, guarantee that multiple reagent mixes back appearance speed is even.

According to the utility model provides an embodiment, the internal diameter of buffer tube does more than twice of damping tube internal diameter. If the reaction can not be completed before entering the next stage of equipment, a large amount of water vapor is brought to the atomizer along with bubbles, so that the atomization efficiency is reduced, and the performance of the instrument is influenced. Because the inner diameter of the buffer tube is far larger than the inner diameter of the damping tube, the flow velocity of the mixed liquid in the buffer tube is reduced, so that the mixed liquid fully reacts before entering the next-stage gas-liquid separator, the subsequent gas-liquid separation effect is improved, and meanwhile, the influence of insufficient reaction on detection data is avoided.

According to an embodiment of the present invention, the buffer tube is made of a material that can elastically deform. When the mixed liquid reacts violently to generate a large amount of gas, the buffer tube can deform elastically, and the space in the tube is enlarged, so that the influence on the flow of the reagent in the previous-stage damping tube is reduced.

According to the utility model provides an embodiment, the buffer tube is the silicone tube. The silicone tube has better elastic deformation performance.

According to an embodiment of the present invention, the buffer tube is provided with an elastic buffer portion. The elastic buffer part is arranged on the buffer tube and can be arranged at the inlet, the outlet or any middle position of the buffer tube, when the mixed liquid reacts violently, the elastic buffer part expands, and therefore the pressure intensity in the buffer tube is prevented from rising rapidly.

According to an embodiment of the present invention, the buffer tube is in use, and the exit position is higher than the entrance position. Because the outlet is higher than the inlet, the mixed liquid in the buffer tube flows from bottom to top and has the same flowing direction with the gas, thereby being convenient for gas-liquid separation.

According to the utility model provides an embodiment, still include the ration pipe, every the entry of damping pipe all is connected with one the ration pipe. The amount of the reagent can be precisely controlled by the quantitative tube.

According to the utility model provides an embodiment, every the ration pipe all is equipped with level sensor. The quantity of the reagent in the quantitative tube is controlled by the liquid level sensor, and the sample introduction is stopped when the reagent reaches the liquid level sensor, so that the quantity of the reaction reagent is accurately controlled, the test result is more accurate, and the consumption of the reagent is reduced.

According to the utility model provides an embodiment, still include vapour and liquid separator, vapour and liquid separator's entry with the exit linkage of buffer tube. The gas-liquid separator ensures that the gas-liquid reaches higher separation rate before entering the atomizer.

According to the present invention, the gas-liquid separator is a spiral tube. The spiral pipe is simple in structure, and gas-liquid mixture can be gradually separated in the spiral pipe due to the centrifugal effect when the gas-liquid mixture rapidly flows in the spiral pipe, so that a better gas-liquid separation effect is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a damping sampling device of a water quality heavy metal on-line monitor provided in an embodiment.

Description of the reference numerals

10-mixing sample injector

21-damping tube

22-carrier gas pipe

23-buffer tube

30-gas-liquid separator

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Examples

Referring to fig. 1, the damping sampling device of quality of water heavy metal on-line monitoring appearance that this embodiment provided includes: the mixing sample injector 10, the damping tube 21, the carrier gas tube 22 and the buffer tube 23; the mixing sample injector 10 is provided with a reagent port, a carrier gas port and a mixed liquid outlet; two reagent ports are provided (in other embodiments, the number of reagent ports can be adjusted according to the types of samples to be mixed as required), one damping tube 21 is connected to each reagent port, the carrier gas port is connected to the carrier gas tube 22, and the mixed liquid outlet is connected to the buffer tube 23.

During operation, reagent advances the appearance through damping tube 21, and damping tube 21 has increased the flow damping of reagent to alleviate the influence of violent reaction after the reagent mixes to preceding stage flow, guarantee that multiple reagent mixes the back appearance speed even.

If the reaction is not complete before entering the next stage of equipment, a large amount of moisture is carried to the atomizer along with the bubbles, which reduces atomization efficiency and affects instrument performance, so the inner diameter of buffer tube 23 should be more than twice the inner diameter of damping tube 21. In the embodiment, the inner diameter of the damping tube 21 is 0.6mm, the inner diameter of the buffer tube 23 is 3mm, and since the inner diameter of the buffer tube 23 is much larger than the inner diameter of the damping tube 21, the flow velocity of the mixed liquid in the buffer tube 23 is reduced, so that the mixed liquid fully reacts before entering the next-stage gas-liquid separator 30, the subsequent gas-liquid separation effect is improved, and meanwhile, the influence of insufficient reaction on detection data is avoided; meanwhile, after the damping tube with the small diameter enters the buffer tube with the large diameter, the hydraulic pressure is reduced, so that the influence of severe reaction of the mixed liquid on the sample injection flow of the damping tube is reduced.

In this embodiment, the buffer tube 23 is a silicone tube, and since the silicone tube has a good elastic deformation property, when the mixed liquid reacts violently to generate a large amount of gas, the buffer tube 23 can deform elastically to expand the space in the tube, thereby effectively reducing the pressure rise caused by the reaction gas, and reducing the influence on the reagent flow in the previous-stage damping tube 21. In other embodiments, buffer tube 23 may be provided with an elastic buffer portion, which may be provided at any position of the inlet, outlet or middle of buffer tube 23, and which expands when the mixed liquid reacts vigorously to avoid a rapid rise in pressure within buffer tube 23.

When the buffer tube 23 is in use, the outlet position is higher than the inlet position, so that the mixed liquid in the buffer tube 23 flows from bottom to top in the same direction as the gas, thereby facilitating gas-liquid separation.

The damping sample injection device provided by the embodiment further comprises a quantitative tube (not shown in the figure), and an inlet of each damping tube 21 is connected with one quantitative tube. The amount of the reagent can be precisely controlled by the quantitative tube.

More specifically, each dosing tube is provided with a level sensor. The quantity of the reagent in the quantitative tube is controlled by the liquid level sensor, and the sample introduction is stopped when the reagent reaches the liquid level sensor, so that the quantity of the reaction reagent is accurately controlled, the test result is more accurate, and the consumption of the reagent is reduced.

The damping sample injection device also comprises a gas-liquid separator 30, and the inlet of the gas-liquid separator 30 is connected with the outlet of the buffer tube 23. The gas-liquid separator 30 ensures that the gas-liquid reaches a high separation rate before entering the atomizer. The gas-liquid separator 30 in this embodiment is a spiral tube, and the spiral tube has a simple structure, and when the gas-liquid mixture rapidly flows in the spiral tube, gas and liquid are gradually separated in the spiral tube due to the centrifugal action, so that a better gas-liquid separation effect is achieved.

In the description of the present application, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. Damping sampling device of quality of water heavy metal on-line monitoring appearance, its characterized in that includes: the device comprises a mixing sample injector (10), a damping tube (21), a carrier gas tube (22) and a buffer tube (23); the mixing sample injector (10) is provided with a reagent port, a carrier gas port and a mixed liquid outlet; the reagent mouth is a plurality of, every reagent mouth all is connected with one damping tube (21), the year gas port with year trachea (22) are connected, mixed liquid export with buffer tube (23) are connected.

2. The damping sampling device of the water quality heavy metal on-line monitor as set forth in claim 1, wherein the inner diameter of the buffer tube (23) is more than twice of the inner diameter of the damping tube (21).

3. The damping sampling device of the water quality heavy metal on-line monitor as set forth in claim 1, wherein the buffer tube (23) is made of a material capable of elastic deformation.

4. The damping sampling device of the water quality heavy metal on-line monitor as claimed in claim 3, wherein the buffer tube (23) is a silicone tube.

5. The damping sampling device of the water quality heavy metal on-line monitor as set forth in claim 1, wherein the buffer tube (23) is provided with an elastic buffer part.

6. The damping sampling device of the water quality heavy metal on-line monitor as set forth in claim 1, wherein the buffer tube (23) is in use, and the outlet position is higher than the inlet position.

7. The damping sampling device of the water quality heavy metal on-line monitor according to claim 1, characterized by further comprising quantitative tubes, wherein an inlet of each damping tube (21) is connected with one quantitative tube.

8. The damping sampling device of the water quality heavy metal on-line monitor as claimed in claim 7, wherein each quantitative tube is provided with a liquid level sensor.

9. The damping sampling device of the water quality heavy metal on-line monitor as set forth in claim 1, further comprising a gas-liquid separator (30), wherein the inlet of the gas-liquid separator (30) is connected with the outlet of the buffer tube (23).

10. The damping sampling device of the water quality heavy metal on-line monitor according to claim 9, wherein the gas-liquid separator (30) is a spiral pipe.

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