Solvent filtering device for ion chromatograph

Abstract

The utility model relates to the technical field of filtering devices, in particular to a solvent filtering device for an ion chromatograph, which comprises a mounting box, two ends of the mounting box are fixedly connected with flow guide pipes, one side of the mounting box is slidably inserted with a collecting box and a mounting frame, the side surface of the mounting frame is fixedly connected with a dense-mesh filter screen, and the dense-mesh filter screen is fixedly connected with the flow guide pipes. A first clamping plate and a second clamping plate which are used for clamping a filter membrane are slidably inserted into one side of the mounting box, a fixing rod and a pressing rod are fixedly connected to the inner side of a clamping assembly composed of the first clamping plate and the second clamping plate, and the filter membrane is arranged between the pressing rod and the fixing rod; the device has the beneficial effects that the filter membrane is clamped by the first clamping plate and the second clamping plate, and the filter membrane with a rectangular cross section can be clamped into a W shape through the matching of the fixing rod and the pressing rod, so that the contact area between the filter membrane and a solvent is greatly increased; therefore, the problem that the filtering effect is affected due to the small contact area between the filter membrane and the solution in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a solvent filtering device for an ion chromatograph. Background Art

[0002] Ion chromatograph is an instrument used to separate and determine the ion composition in a solution. It is based on the principle of chromatography technology and separates and detects the ions in the solution one by one through the interaction between the stationary phase and the mobile phase.

[0003] At present, most ion chromatographs are composed of detectors, chromatographic columns, high-pressure pumps, samplers, filtration devices, injection devices, and data processing systems. The filtration device uses a combination of filter screens and filter membranes to filter impurities flowing in the solution, which can better ensure the accuracy of the test results.

[0004] However, the contact surface between the filter membrane and the solution in the prior art is usually round or square, and the contact area is small, which may affect the filtering effect. Therefore, the utility model proposes a solvent filtering device for an ion chromatograph to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a solvent filtering device for an ion chromatograph to solve the problem that the contact area between the filter membrane and the solution in the prior art mentioned in the above background technology is small and affects the filtering effect.

[0006] To achieve the above object, the utility model provides the following technical solution: a solvent filtering device for an ion chromatograph, the solvent filtering device for an ion chromatograph comprising:

[0007] An installation box, both ends of which are fixedly connected with guide tubes, one side of the installation box is slidably plugged with a collection box and an installation frame, the side of the installation frame is fixedly connected with a dense filter screen, one side of the installation box is slidably plugged with a No. 1 clamping plate and a No. 2 clamping plate for clamping the filter membrane, the inner side of the clamping assembly composed of the No. 1 clamping plate and the No. 2 clamping plate is fixedly connected with a plurality of fixed rods and pressure rods installed in a "V" shape, the pressure rod and the fixed rod are plugged and a filter membrane is arranged between the two.

[0008] Preferably, both ends of the installation box are provided with flow openings, and the flow openings correspond to the flow openings of the guide pipe.

[0009] Preferably, a fixed plate is fixedly connected to one side of the installation box, a slide plate for blocking the first clamping plate and the second clamping plate is slidably connected to one side of the installation box, and a plurality of springs are fixedly connected between the fixed plate and the slide plate.

[0010] Preferably, one side of the installation box is provided with an insertion interface for plugging in the No. 1 splint and the No. 2 splint, the inner side of the No. 1 splint is fixedly connected with two symmetrically distributed fixing rods and a pressure rod, the pressure rod on the No. 1 splint is located between the two fixing rods, the inner side of the No. 2 splint is fixedly connected with two symmetrically distributed pressure rods and a fixing rod, the fixing rod on the No. 2 splint is located between the two pressure rods, and one side of each of the plurality of fixing rods is provided with a notch for plugging in the pressure rods.

[0011] Preferably, one end of the collection box is fixedly connected to a No. 2 slider, one side of the installation box is provided with a No. 1 slide groove for the No. 2 slider to be plugged into, one end of the collection box is fixedly connected to a No. 1 slider, one side of the installation box is provided with a No. 2 slide groove for the No. 1 slider to be plugged into, and one side of the No. 1 slider is fixedly connected to a mounting frame.

[0012] Preferably, a surface of the inner side of the collection box in contact with the installation frame is inclined, and the No. 1 clamping plate, the No. 2 clamping plate and the collection box are all sealed and connected to the installation box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model clamps the filter membrane by the first clamping plate and the second clamping plate, and the filter membrane with an original rectangular cross-section can be clamped into a "W" shape through the cooperation of the fixing rod and the pressing rod, so that the contact area between the filter membrane and the solvent is greatly improved, thereby solving the problem in the prior art that the contact area between the filter membrane and the solution is small and affects the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is an exploded view of the installation structure of the installation box of the utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the installation box structure of the utility model;

[0018] Figure 4 It is a side sectional schematic diagram of the structure of the first and second splints of the utility model.

[0019] In the figure: 1. Installation box; 11. Fixed plate; 12. Slide plate; 13. Flow port; 14. Slide slot No. 1; 15. Slide slot No. 2; 16. Plug port; 2. Flow guide tube; 3. Clamp No. 1; 4. Clamp No. 2; 5. Collection box; 51. Slide block No. 1; 52. Slide block No. 2; 6. Fixed rod; 7. Press rod; 8. Installation frame. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0024] See also Figures 1 to 4 , the utility model provides a technical solution:

[0025] Embodiment 1, a solvent filtering device for an ion chromatograph, the solvent filtering device for an ion chromatograph comprising: an installation box 1.

[0026] Specifically, both ends of the installation box 1 are fixedly connected with a guide tube 2, one side of the installation box 1 is slidably plugged with a collection box 5 and an installation frame 8, the side of the installation frame 8 is fixedly connected with a dense mesh filter, one side of the installation box 1 is slidably plugged with a No. 1 clamping plate 3 and a No. 2 clamping plate 4 for clamping the filter membrane, and the inner side of the clamping assembly composed of the No. 1 clamping plate 3 and the No. 2 clamping plate 4 is fixedly connected with a plurality of fixed rods 6 and pressure rods 7 installed in a "V" shape, and the pressure rod 7 is plugged with the fixed rod 6 and a pressure rod is set between the two. There is a filter membrane. When assembling the ion chromatograph, first install the installation box 1 at one end of the guide tube 2, then fix the filter screen on the installation frame 8, and then insert the collection box 5 and the installation frame 8 into the installation box 1, and then clamp the filter membrane using the No. 1 clamp 3 and the No. 2 clamp 4. With the cooperation of the fixing rod 6 and the pressure rod 7, the filter membrane will be clamped into a "W" shape, which can greatly increase the contact area between the filter membrane and the solvent. Then insert the combination into the installation box 1 and install other components.

[0027] Embodiment 2, on the basis of embodiment 1, in order to allow the solvent to circulate, both ends of the installation box 1 of the present application are provided with flow ports 13, and the flow ports 13 correspond to the flow ports of the guide tube 2, which can ensure that the solvent can be filtered through the installation box 1 and the filter structure installed therein and will not affect the next step of detection.

[0028] Embodiment three, on the basis of embodiment two, in order to facilitate the stable installation of the filter membrane, a fixing plate 11 is fixedly connected to one side of the installation box 1 of the present application, and a slide plate 12 for blocking the No. 1 plywood 3 and the No. 2 plywood 4 is slidably connected to one side of the installation box 1, and a plurality of springs are fixedly connected between the fixing plate 11 and the slide plate 12. When the No. 1 plywood 3 and the No. 2 plywood 4 need to be inserted into the installation box 1, the slide plate 12 is pressed to expose the plug-in position of the two. After the two are inserted, the slide plate 12 is released. Under the action of the spring, the slide plate 12 will block the No. 1 plywood 3 and the No. 2 plywood 4, thereby ensuring the stability of the filter membrane.

[0029] Embodiment 4. On the basis of embodiment 3, in order to better realize the present device, a plug-in interface 16 for plugging in the No. 1 splint 3 and the No. 2 splint 4 is provided on one side of the installation box 1 of the present application. Two symmetrically distributed fixing rods 6 and a pressure rod 7 are fixedly connected to the inner side of the No. 1 splint 3. The pressure rod 7 on the No. 1 splint 3 is located between the two fixing rods 6. Two symmetrically distributed pressure rods 7 and a fixing rod 6 are fixedly connected to the inner side of the No. 2 splint 4. The fixing rod 6 on the No. 2 splint 4 is located between the two pressure rods 7. Notches for plugging in the pressure rods 7 are provided on one side of the plurality of fixing rods 6. In this way, after the No. 1 splint 3 and the No. 2 splint 4 are combined, the fixing rods 6 and the pressure rods 7 on the two can be plugged in correspondingly, and the filter membrane will also be pressed as the fixing rods 6 and the pressure rods 7 are plugged in, and its cross-section will also change from a rectangle to a "W" shape, thereby achieving the effect of increasing the contact surface between the filter membrane and the solvent.

[0030] Embodiment 5, on the basis of embodiment 4, in order to facilitate the installation of the collection box 5 and the installation frame 8, one end of the collection box 5 of the present application is fixedly connected with a No. 2 slider 52, and one side of the installation box 1 is provided with a No. 1 slide groove 14 for the No. 2 slider 52 to be plugged in, one end of the collection box 5 is fixedly connected with a No. 1 slider 51, and one side of the installation box 1 is provided with a No. 2 slide groove 15 for the No. 1 slider 51 to be plugged in, and one side of the No. 1 slider 51 is fixedly connected with the installation frame 8, which can facilitate the installation of the collection box 5, and can also facilitate the installation of the installation frame 8. After one inspection is completed, it is also convenient for the disassembly and cleaning of the two.

[0031] Embodiment 6. On the basis of embodiment 5, for the perfection of the present device, a surface of the inner side of the collecting box 5 of the present application that contacts the mounting frame 8 is tilted, which can ensure that large-diameter impurities will not accumulate on the edge of the filter screen and will not clog the pipeline. The No. 1 clamp 3, the No. 2 clamp 4 and the collecting box 5 are all sealed and connected to the mounting box 1, and the seal can ensure the overall stability of the ion chromatograph.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solvent filtration device for an ion chromatograph, characterized in that: The solvent filtering device for ion chromatograph comprises: An installation box (1) is provided, wherein both ends of the installation box (1) are fixedly connected with a flow guide tube (2), one side of the installation box (1) is slidably plugged with a collection box (5) and an installation frame (8), the side of the installation frame (8) is fixedly connected with a dense mesh filter, one side of the installation box (1) is slidably plugged with a first clamping plate (3) and a second clamping plate (4) for clamping a filter membrane, the inner side of the clamping assembly composed of the first clamping plate (3) and the second clamping plate (4) is fixedly connected with a plurality of fixed rods (6) and pressure rods (7) installed in a "V" shape, and the pressure rods (7) are plugged with the fixed rods (6) and a filter membrane is arranged between the two.

2. The solvent filtering device for ion chromatograph according to claim 1, characterized in that: Both ends of the installation box (1) are provided with flow openings (13), and the flow openings (13) correspond to the flow openings of the flow guide pipe (2).

3. The solvent filtering device for ion chromatograph according to claim 2, characterized in that: A fixed plate (11) is fixedly connected to one side of the installation box (1), a slide plate (12) for sealing the first clamping plate (3) and the second clamping plate (4) is slidably connected to one side of the installation box (1), and a plurality of springs are fixedly connected between the fixed plate (11) and the slide plate (12).

4. The solvent filtering device for ion chromatograph according to claim 3, characterized in that: One side of the installation box (1) is provided with an insertion interface (16) for plugging in the No. 1 clamp (3) and the No. 2 clamp (4); the inner side of the No. 1 clamp (3) is fixedly connected with two symmetrically distributed fixing rods (6) and a pressure rod (7); the pressure rod (7) on the No. 1 clamp (3) is located between the two fixing rods (6); the inner side of the No. 2 clamp (4) is fixedly connected with two symmetrically distributed pressure rods (7) and a fixing rod (6); the fixing rod (6) on the No. 2 clamp (4) is located between the two pressure rods (7); and one side of the plurality of fixing rods (6) is provided with a notch for plugging in the pressure rods (7).

5. The solvent filtering device for ion chromatograph according to claim 4, characterized in that: One end of the collection box (5) is fixedly connected to a second slider (52), one side of the installation box (1) is provided with a first slide groove (14) for plugging the second slider (52), one end of the collection box (5) is fixedly connected to a first slider (51), one side of the installation box (1) is provided with a second slide groove (15) for plugging the first slider (51), and one side of the first slider (51) is fixedly connected to a mounting frame (8).

6. The solvent filtering device for ion chromatograph according to claim 5, characterized in that: A surface of the inner side of the collection box (5) that contacts the installation frame (8) is arranged obliquely, and the first clamping plate (3), the second clamping plate (4) and the collection box (5) are all sealed and connected to the installation box (1).

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