Suppressor for ion chromatograph

Abstract

The utility model discloses a kind of suppressors for ion chromatograph, including lower shell, the inner wall top end of lower shell is clamped with upper shell, the inner wall bottom end of lower shell is fixedly connected with limit support, the inner wall one end of limit support is installed with stainless steel A plate, the outer wall one side of stainless steel A plate is installed with PEEK upper plate, the outer wall one side of PEEK upper plate is installed with PEEK middle plate, the outer wall one side of PEEK middle plate is installed with PEEK lower plate;By setting first joint and second joint, can make suppressor match multiple same type ion chromatography products of domestic import etc., this suppressor has advanced continuous self-reproduction membrane electric suppression technology, without additional acid or alkali, this suppressor has high inhibition capacity, low background conductance, low noise, baseline stable, maintenance-free, compatible 100% organic solvent, the suppressor has smaller dead volume, more sensitive response signal, anti-pollution, high voltage resistance, long service life, signal line uses aviation interface connection, disassembly is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of suppressor technology, and in particular to a suppressor for ion chromatographs. Background Technology

[0002] Anion suppressors are key post-column processing devices in ion chromatography, primarily used to reduce the background conductivity of the eluent and improve detection sensitivity. They are widely used in environmental monitoring, food safety, and petrochemical industries. This device, through the synergistic effect of an electric field and a cation exchange membrane, replaces cations in the high-conductivity eluent with H+. + It is converted into a weak acid or water with low conductivity, while enhancing the response signal of the anion to be tested.

[0003] The following problems exist: common suppressors require additional acid or alkali during use, are bulky, have weak pressure resistance, short service life, cannot be matched with many domestic and imported ion chromatography products of the same type, and the disassembly and assembly steps are extremely inconvenient. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A suppressor for an ion chromatograph includes a lower housing, an upper housing snapped onto the top of the inner wall of the lower housing, a limiting frame fixedly connected to the bottom of the inner wall of the lower housing, a stainless steel A plate installed on one end of the inner wall of the limiting frame, a PEEK upper plate installed on one side of the outer wall of the stainless steel A plate, a PEEK middle plate installed on one side of the outer wall of the PEEK upper plate, a PEEK lower plate installed on one side of the outer wall of the PEEK middle plate, and a stainless steel B plate installed on one side of the outer wall of the PEEK lower plate.

[0007] As a further description of the above technical solution:

[0008] The lower shell and the upper shell have semi-circular grooves at both ends of their opposite surfaces, and the two sets of semi-circular grooves can be spliced ​​together to form a set of circular perforations.

[0009] As a further description of the above technical solution:

[0010] Both ends of the outer wall of the PEEK plate are fixedly connected to a first connector, and the outer wall of the first connector is sleeved with the inner wall of the semi-circular groove.

[0011] As a further description of the above technical solution:

[0012] The top of the upper housing has multiple sets of through-holes, with a total of four sets of holes.

[0013] As a further description of the above technical solution:

[0014] The top ends of the PEEK upper plate and the PEEK middle plate are fixedly connected with second connectors, and the outer walls of the second connectors are sleeved with the inner walls of the circular holes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the first connector and the second connector, the suppressor can be matched with a variety of domestic and imported ion chromatography products of the same type. The suppressor has advanced continuous self-regenerating thin film electro-suppression technology, which does not require additional acid or alkali. The suppressor has high suppression capacity, low background conductivity, low noise, stable baseline, maintenance-free operation, and compatibility with 100% organic solvents. The suppressor has a smaller dead volume, a more sensitive response signal, is resistant to contamination, has high pressure resistance, and a long service life. The signal line adopts aviation interface connection, which makes disassembly and assembly more convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a top sectional view of the present invention;

[0018] Figure 3 This is a front view of the PEEK upper plate in this utility model;

[0019] Figure 4 This is a front view of the PEEK middle plate in this utility model;

[0020] Figure 5 This is a front view of the PEEK lower plate in this utility model.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] 1. Lower shell; 2. Upper shell; 3. Limiting frame; 4. Stainless steel A plate; 5. PEEK upper plate; 6. PEEK middle plate; 7. PEEK lower plate; 8. Stainless steel B plate; 9. Semi-circular groove; 10. First connector; 11. Round hole; 12. Second connector. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0026] Reference Figure 1-5 This utility model provides an embodiment of an ion chromatograph suppressor, comprising a lower housing 1, with an upper housing 2 snapped onto the top of the inner wall of the lower housing 1. By setting a simple connection between the lower housing 1 and the upper housing 2, the disassembly and assembly steps of the entire suppressor housing structure are made more convenient. A limiting frame 3 is fixedly connected to the bottom of the inner wall of the lower housing 1. A stainless steel A plate 4 is installed on one end of the inner wall of the limiting frame 3. A PEEK upper plate 5 is installed on one side of the outer wall of the stainless steel A plate 4. A PEEK middle plate 6 is installed on one side of the outer wall of the PEEK upper plate 5. A PEEK lower plate 7 is installed on one side of the outer wall of the PEEK middle plate 6. A stainless steel B plate 8 is installed on one side of the outer wall of the PEEK lower plate 7. By setting the limiting frame 3, the stainless steel A plate 4, the PEEK upper plate 5, the PEEK middle plate 6, the PEEK lower plate 7, and the stainless steel B plate 8 can be placed stably.

[0027] PEEK, also known as polyether ether ketone, is a polymer composed of repeating units containing one ketone bond and two ether bonds in its main chain structure. It is a special polymer material with physical and chemical properties such as high temperature resistance and chemical corrosion resistance. It is a type of semi-crystalline polymer material that can be used as a high temperature resistant structural material and an electrical insulating material. It can be combined with glass fiber or carbon fiber to prepare reinforcing materials. The lower shell 1 and the upper shell 2 have semi-circular grooves 9 at both ends of their opposite surfaces. The outer walls of the PEEK middle plate 6 are fixedly connected to the first connectors 10 at both ends, and the outer walls of the first connectors 10 are sleeved with the inner walls of the semi-circular grooves 9.

[0028] The top of the upper shell 2 has multiple sets of through-holes 11. The top ends of the PEEK upper plate 5 and the PEEK middle plate 6 are fixedly connected to second connectors 12. The outer walls of the second connectors 12 are fitted into the inner walls of the through-holes 11. By setting the first connector 10 and the second connector 12, the suppressor can be matched with various domestic and imported ion chromatography products of the same type. This suppressor features advanced continuous self-regenerating thin-film electro-suppression technology, requiring no additional acid or alkali. It boasts high suppression capacity, low background conductivity, low noise, stable baseline, maintenance-free operation, and compatibility with 100% organic solvents. The suppressor also features a smaller dead volume, a more sensitive response signal, anti-fouling properties, high pressure resistance, and a long service life. Notably, the anion suppressor's model number is i-AERSII (4MM), with a rated current of 0-300mA, and the eluent system is either a carbonate system or a hydroxide system. The cation suppressor's model number is i-CERS (4MM), with a rated current of 0-300mA, and the eluent system is methanesulfonic acid.

[0029] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A suppressor for an ion chromatograph, comprising a lower housing (1), characterized in that: The upper shell (2) is snapped onto the top of the inner wall of the lower shell (1). A limit frame (3) is fixedly connected to the bottom of the inner wall of the lower shell (1). A stainless steel A plate (4) is installed on one end of the inner wall of the limit frame (3). A PEEK upper plate (5) is installed on one side of the outer wall of the stainless steel A plate (4). A PEEK middle plate (6) is installed on one side of the outer wall of the PEEK upper plate (5). A PEEK lower plate (7) is installed on one side of the outer wall of the PEEK middle plate (6). A stainless steel B plate (8) is installed on one side of the outer wall of the PEEK lower plate (7).

2. The suppressor for an ion chromatograph according to claim 1, characterized in that: The lower shell (1) and the upper shell (2) have semi-circular grooves (9) at both ends of their opposite surfaces, and the two sets of semi-circular grooves (9) can be spliced ​​together to form a set of circular perforations.

3. A suppressor for an ion chromatograph according to claim 2, characterized in that: Both ends of the outer wall of the PEEK plate (6) are fixedly connected to the first connector (10), and the outer wall of the first connector (10) is sleeved with the inner wall of the semi-circular groove (9).

4. A suppressor for an ion chromatograph according to claim 1, characterized in that: The top of the upper shell (2) has a number of through holes (11) extending vertically, and there are a total of four sets of holes (11).

5. A suppressor for an ion chromatograph according to claim 4, characterized in that: The top ends of the PEEK upper plate (5) and the PEEK middle plate (6) are both fixedly connected with second connectors (12), and the outer walls of the second connectors (12) are sleeved with the inner walls of the round holes (11).

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