Atomic absorption spectrometer for detecting landfill leachate

Abstract

The utility model belongs to the technical field of atomic absorption spectrometers, and discloses an atomic absorption spectrometer for landfill leachate detection, which comprises an atomic absorption spectrometer, a sample introduction system port is arranged on the atomic absorption spectrometer, and a pretreatment frame is detachably mounted on the sample introduction system port. A filter screen for removing suspended matters is fixedly mounted on the inner cavity wall of the pretreatment frame, a filter is detachably mounted on the pretreatment frame, and a sealing ring is mounted between the pretreatment frame and the filter; a multi-layer filter membrane structure for effectively removing suspended matters and macromolecular organic matters is mounted in the filter, the bottom wall of an inner cavity of the pretreatment frame consists of a first bottom surface, an inclined surface and a second bottom surface, the first bottom surface is higher than the second bottom surface, and the inclined surface is connected with the first bottom surface and the second bottom surface and is positioned between the first bottom surface and the second bottom surface. According to the utility model, suspended matters and organic matters in the landfill leachate can be filtered, and blockage can be prevented, so that the accuracy of a detection result and the stability of an instrument are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to atomic absorption spectrometer technical field especially relates to a kind of atomic absorption spectrometer for landfill leachate detection. BACKGROUND

[0002] Atomic absorption spectrometer for landfill leachate detection is a kind of high-precision analytical instrument specially used for detecting the content of heavy metals and other harmful elements in landfill leachate, landfill leachate is the liquid containing high-concentration pollutants generated in landfill, its composition is complex and extremely harmful to the environment, and by atomic absorption spectrometer, harmful elements in leachate can be quickly and accurately detected, providing scientific basis for environmental monitoring and pollution control.

[0003] Landfill leachate is complex, contains a variety of heavy metal ions, and is extremely harmful to the environment and human health, atomic absorption spectrometry is a commonly used method for detecting the content of heavy metal elements in landfill leachate, however, the inventor found that the sample introduction system is easy to block when detecting landfill leachate, specifically, landfill leachate contains a large amount of suspended solids and organic matter, which easily blocks the traditional atomizer and combustion head, affecting the accuracy of the detection results and the stability of the instrument, therefore, we propose an atomic absorption spectrometer for landfill leachate detection. SUMMARY

[0004] In order to overcome the defects of the prior art pointed out above, the inventor has made in-depth research, and after a lot of creative labor, the present utility model is completed.

[0005] Specifically, the technical problem to be solved by the present utility model is to provide an atomic absorption spectrometer for landfill leachate detection to solve the technical problem of easy blockage of the sample introduction system of the current atomic absorption spectrometer.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions:

[0007] An atomic absorption spectrometer for landfill leachate detection, comprising an atomic absorption spectrometer, a sample introduction system port is provided on the atomic absorption spectrometer, a pretreatment frame is detachably installed on the sample introduction system port, a filter screen for removing suspended solids is fixedly installed on the inner cavity wall of the pretreatment frame, a filter is detachably installed on the pretreatment frame, and a sealing ring is installed between the pretreatment frame and the filter.

[0008] The filter is provided with a multilayer filter membrane structure for effectively removing suspended solids and macromolecular organic matter.

[0009] As an improved technical scheme, the inner cavity bottom wall of the pretreatment frame is composed of a first bottom surface, an inclined surface and a second bottom surface, the height of the first bottom surface is higher than that of the second bottom surface, and the inclined surface connects and is located between the first bottom surface and the second bottom surface.

[0010] As an improved technical scheme, the second bottom surface is fixedly provided with an assembly interface, and the assembly interface is in communication with the pretreatment frame.

[0011] As an improved technical scheme, an annular groove is formed in the outer surface of the assembly interface, the sealing ring is sleeved and arranged in the annular groove, and the filter is arranged on the assembly interface through the assembly interface and the annular groove.

[0012] As an improved technical scheme, the pretreatment frame is provided with an integral mounting edge, the mounting edge is symmetrically arranged along the length direction of the pretreatment frame, a clamping groove corresponding to the edge of the sampling system port is formed between the mounting edge and the pretreatment frame, and the clamping groove is matched with the edge of the sampling system port.

[0013] As an improved technical scheme, the multi-layer filter membrane structure comprises a metal mesh layer, a non-woven fabric layer, a ceramic membrane layer and a microporous filter membrane layer arranged inside the filter, and the metal mesh layer, the non-woven fabric layer, the ceramic membrane layer and the microporous filter membrane layer are equidistantly arranged from top to bottom along the height direction of the filter.

[0014] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0015] 1. According to the present application, an appropriate amount of landfill leachate is injected into the pretreatment frame through the filter screen, at this time, the filter screen preliminarily filters the landfill leachate, and the landfill leachate enters the filter through the first bottom surface, the inclined surface, the second bottom surface and the assembly interface, and then the metal mesh layer, the non-woven fabric layer, the ceramic membrane layer and the microporous filter membrane layer in the filter successively filter the landfill leachate again, so as to effectively remove the suspended solids and macromolecular organic matters in the landfill leachate, thereby conveniently filtering the suspended solids and organic matters in the landfill leachate, preventing clogging, and ensuring the accuracy of the detection result and the stability of the instrument.

[0016] 2. The utility model discloses a sealing ring is installed on the assembly interface, and the filter is assembled to the assembly interface, the sealing ring sleeve installation is in annular recess at this moment, the filter sleeve installation is on the assembly interface, then the pretreatment frame is assembled to the edge of sample introduction system mouth, the clamping groove formed by the installation edge and the pretreatment frame is clamped and installed on the edge of sample introduction system mouth at this moment, if need to disassemble the pretreatment frame and sealing ring, the step direction operation can be operated, thereby the pretreatment frame is convenient to dismount, and simple and quick operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings. Wherein:

[0018] Figure 1 It is the overall structure schematic diagram of the utility model.

[0019] Figure 2 It is the exploded structure schematic diagram of the utility model.

[0020] Figure 3 It is the pretreatment frame and filter exploded structure schematic diagram of the utility model.

[0021] Figure 4 It is the pretreatment frame and filter cut structure schematic diagram of the utility model.

[0022] Figure 5 It is the Figure 4 A out amplification structure schematic diagram.

[0023] Mark explanation:

[0024] In the drawing: 1, atomic absorption spectrometer;2, sample introduction system mouth;3, pretreatment frame;301, first bottom surface;302, inclined surface;303, second bottom surface;304, installation edge;305, assembly interface;306, annular recess;4, filter screen;5, sealing ring;6, filter;601, metal mesh layer;602, non-woven fabric layer;603, ceramic membrane layer;604, microporous filter membrane layer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0027] Meanwhile, "and / or" or "and / or" appearing in the whole text means that three schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes are satisfied at the same time.

[0028] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0029] Referring to Figures 1-5 , an atomic absorption spectrometer for landfill leachate detection is provided, the atomic absorption spectrometer for landfill leachate detection comprises an atomic absorption spectrometer 1, the atomic absorption spectrometer 1 is prior art and is not specifically described here, a sample introduction system port 2 is arranged on the atomic absorption spectrometer 1, a pretreatment frame 3 is detachably installed on the sample introduction system port 2, a filter screen 4 for removing suspended solids is fixedly installed on the inner cavity wall of the pretreatment frame 3, a filter 6 is detachably installed on the pretreatment frame 3, and a sealing ring 5 is installed between the pretreatment frame 3 and the filter 6.

[0030] The filter 6 is internally provided with a multi-layer filter membrane structure for effectively removing suspended solids and macromolecular organic matter.

[0031] Referring to Figure 4 and Figure 5, the inner cavity bottom wall of the pretreatment frame 3 is composed of a first bottom surface 301, an inclined surface 302 and a second bottom surface 303, the height of the first bottom surface 301 is higher than that of the second bottom surface 303, the inclined surface 302 connects the first bottom surface 301 and the second bottom surface 303 and is located between the first bottom surface 301 and the second bottom surface 303, so as to facilitate the landfill leachate flowing into the second bottom surface 303.

[0032] With reference to Figure 4 and Figure 5 , the second bottom surface 303 is fixedly provided with an assembly interface 305, and the assembly interface 305 is communicated with the pretreatment frame 3, so as to facilitate the landfill leachate entering the assembly interface 305 through the second bottom surface 303.

[0033] With reference to Figure 4 and Figure 5 , the outer surface of the assembly interface 305 is provided with an annular groove 306, the sealing ring 5 is sleeved and installed in the annular groove 306, and the filter 6 is installed on the assembly interface 305 through the assembly interface 305 and the annular groove 306, so that the filter 6 can be sealingly sleeved and installed on the assembly interface 305.

[0034] With reference to Figures 1-4 , the pretreatment frame 3 is integrally provided with a mounting edge 304, the mounting edge 304 is symmetrically arranged along the length direction of the pretreatment frame 3, a clamping groove corresponding to the edge of the sampling system port 2 is formed between the mounting edge 304 and the pretreatment frame 3, and the clamping groove is matched with the edge of the sampling system port 2, so as to be detachably mounted on the edge of the sampling system port 2.

[0035] With reference to Figure 4 and Figure 5 , the multi-layer filter membrane structure includes a metal mesh layer 601, a non-woven fabric layer 602, a ceramic membrane layer 603 and a microporous filter membrane layer 604 which are installed inside the filter 6, and the metal mesh layer 601, the non-woven fabric layer 602, the ceramic membrane layer 603 and the microporous filter membrane layer 604 are equidistantly arranged from top to bottom along the height direction of the filter 6, so as to effectively remove suspended solids and organic matter in the landfill leachate.

[0036] In actual use, the sealing ring 5 is installed on the assembly interface 305, and the filter 6 is assembled to the assembly interface 305, at this time the sealing ring 5 is sleeved and installed in the annular groove 306, and the filter 6 is sleeved and installed on the assembly interface 305, then the pretreatment frame 3 is assembled to the edge of the sampling system port 2, at this time the clamping groove formed by the mounting edge 304 and the pretreatment frame 3 is clamped and installed on the edge of the sampling system port 2, if the pretreatment frame 3 and the sealing ring 5 need to be disassembled, the above steps can be operated, so that the pretreatment frame 3 is conveniently disassembled and assembled, and the operation is simple and fast.

[0037] Then, the filter screen 4 is used to filter the landfill leachate, and the landfill leachate enters the filter 6 through the first bottom surface 301, the inclined surface 302, the second bottom surface 303 and the assembly interface 305, and then the landfill leachate is filtered by the metal screen layer 601, the non-woven fabric layer 602, the ceramic membrane layer 603 and the microporous filter membrane layer 604 in the filter 6 in turn, so that the suspended solids and macromolecular organic matters in the landfill leachate are effectively removed, the suspended solids and organic matters in the landfill leachate are conveniently filtered, and then the clogging is prevented, so that the accuracy of the detection result and the stability of the instrument are ensured.

[0038] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the protection scope of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. An atomic absorption spectrometer for detecting landfill leachate, comprising an atomic absorption spectrometer (1), wherein the atomic absorption spectrometer (1) is provided with a sample inlet (2), characterized in that: A pretreatment frame (3) is detachably installed on the injection system port (2). A filter screen (4) for removing suspended matter is fixedly installed on the inner wall of the pretreatment frame (3). A filter (6) is detachably installed on the pretreatment frame (3), and a sealing ring (5) is installed between the pretreatment frame (3) and the filter (6). The filter (6) is equipped with a multi-layer filter membrane structure for effectively removing suspended solids and macromolecular organic matter.

2. The atomic absorption spectrometer for detecting landfill leachate according to claim 1, characterized in that: The inner cavity bottom wall of the preprocessing frame (3) is composed of a first bottom surface (301), an inclined surface (302) and a second bottom surface (303), and the height of the first bottom surface (301) is higher than that of the second bottom surface (303). The inclined surface (302) connects the first bottom surface (301) and the second bottom surface (303) and is located between the first bottom surface (301) and the second bottom surface (303).

3. The atomic absorption spectrometer for detecting landfill leachate according to claim 2, characterized in that: An assembly interface (305) is fixedly installed on the second bottom surface (303), and the assembly interface (305) is connected to the pre-processing frame (3).

4. The atomic absorption spectrometer for detecting landfill leachate according to claim 3, characterized in that: The outer surface of the assembly interface (305) is provided with an annular groove (306), the sealing ring (5) is sleeved and installed in the annular groove (306), and the filter (6) is installed on the assembly interface (305) through the assembly interface (305) and the annular groove (306).

5. The atomic absorption spectrometer for detecting landfill leachate according to claim 2, characterized in that: The pretreatment frame (3) has an integrally formed mounting edge (304), and the mounting edge (304) is symmetrically arranged along the length direction of the pretreatment frame (3). A snap-fit ​​groove corresponding to the edge of the injection system port (2) is formed between the mounting edge (304) and the pretreatment frame (3), and the snap-fit ​​groove is adapted to the edge of the injection system port (2).

6. The atomic absorption spectrometer for detecting landfill leachate according to claim 1, characterized in that: The multilayer filter membrane structure includes a metal mesh layer (601), a non-woven fabric layer (602), a ceramic membrane layer (603), and a microporous filter membrane layer (604) installed inside the filter (6), and the metal mesh layer (601), the non-woven fabric layer (602), the ceramic membrane layer (603), and the microporous filter membrane layer (604) are equidistant from top to bottom along the height direction of the filter (6).

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