Ion chromatograph for batch sample injection

Abstract

An embodiment of the utility model provides a batch sample injection ion chromatograph, which relates to the technical field of chromatographs, and comprises a detection case and a sample placing rack movably mounted in the lower end of the detection case, the sample placing rack comprises a positioning rack and a moving seat mounted at the lower end and used for moving and positioning the positioning rack, a lifting frame is movably mounted at the lower end of the positioning frame, when a sample is added to the sample placing frame, the sample is added through a liquid adding device in the detection case, then the sample placing frame moves towards the outer side, and then a lifting seat arranged at the center can be pressed down to push first racks uniformly arranged on the side surface to press down; then, a second rack is driven by a transmission gear mounted on one side in a meshed manner to rise, a lifting frame fixedly mounted outside is jacked up, and a sample tube is jacked up by an ejector rod fixedly mounted at the upper end, so that an operator can conveniently take out a sample from the upper end of a positioning frame and then put the sample into a detection part at the upper end for detection; and the sample tube is convenient to take and detect.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographs, and particularly relates to an ion chromatograph for batch sample injection. Background Art

[0002] Ion chromatography, as an efficient and accurate analysis method, has been widely used in the fields of environmental monitoring, food industry, pharmaceutical industry, etc. The separation principle is based on the reversible exchange between the dissociable ions on the ion exchange resin and the solute ions with the same charge in the mobile phase and the difference in the affinity of the analyte solute for the exchanger, and is separated. It is suitable for the separation of hydrophilic anions and cations.

[0003] When a traditional ion chromatograph analyzes batch samples, a liquid adding device is required to quantitatively add samples into the sample tube. Usually, it is necessary to manually place and take out the sample tubes one by one. And when placing the sample tubes, in order to ensure the stability of the sample tubes, more parts of the sample tubes are placed in the rack. If it is necessary to take them out for detection after the liquid addition is completed, the operation is relatively inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide an ion chromatograph for batch sample injection, which can avoid the problem that more parts of the sample tube are placed in the rack and the operation is relatively inconvenient if it is necessary to take it out for detection after the liquid addition is completed.

[0005] The utility model provides an ion chromatograph for batch sample injection, including:

[0006] A detection chassis, and a sample placement rack movably installed inside the lower end of the detection chassis, and the sample placement rack is movably installed inside a cavity opened at the lower end of the detection chassis;

[0007] A sample placement rack, which includes a positioning rack and a moving seat for moving and positioning the positioning rack installed at the lower end, and a lifting rack is movably installed at the lower end of the positioning rack.

[0008] Preferably, the positioning rack includes a first rack body, a second rack body and a third rack body for positioning and supporting the sample tube. Positioning holes are evenly opened at the upper ends of the first rack body, the second rack body and the third rack body, and the positioning holes of the third rack body are smaller than the positioning holes of the first rack body and the second rack body.

[0009] Preferably, ejector rods are evenly arranged at the upper end of the lifting rack, and the positions of the ejector rods match the positions of the positioning holes.

[0010] Preferably, the upper end part of the ejector rod is arranged in a concave shape.

[0011] Preferably, a fixed seat is movably installed inside the lifting frame. The positioning frame is fixedly installed on the upper surface of the fixed seat through a connecting rod. The fixed seat is fixedly installed in the inner cavity opened in the center of the moving seat. The upper end of the fixed seat is movably installed with a lifting seat.

[0012] Preferably, a first rack is evenly arranged at the lower end of the lifting seat. A second rack is fixedly installed inside the lifting frame. A transmission gear is meshed and installed in the middle of the first rack and the second rack. Both sides of the transmission gear are movably installed inside the fixed seat through bearings. The second rack is slidably installed inside the empty slot opened on the side of the fixed seat.

[0013] Preferably, the moving seat is composed of two groups of shells. A stepping motor is installed inside the lower shell. The output end of the stepping motor is connected to the rotating shell installed at the upper end. The positioning frame and the fixed seat are arranged inside the upper shell.

[0014] Preferably, the lower end of the lifting seat is in a frustum shape and is movably installed inside the through slot opened in the middle of the fixed seat. A lifting spring is connected to the lower end of the lifting seat. The lower end of the lifting spring is installed on the upper surface of the moving seat.

[0015] Preferably, a rotating part is movably installed inside the lifting seat. The rotating part includes a rotating gear and telescopic racks that are meshed and installed on both sides of the rotating gear for transmission. The ends of the telescopic racks are both provided with telescopic heads. The sizes and positions of the telescopic heads match those of the positioning slots opened in the inner cavity of the fixed seat. One side of the telescopic rack is connected with a return spring for pushing and rebounding.

[0016] Preferably, a moving frame is fixedly installed at the lower end of the moving seat. A transmission block is fixedly installed on one side of the lower end of the moving frame. A rotating screw is movably installed at the bottom of the detection chassis. The rotating screw passes through the transmission block and is in threaded transmission with the transmission block.

[0017] For an ion chromatograph for batch sample injection provided by an embodiment of the present invention, when adding a sample to the sample placement rack, the sample is injected through the liquid adding device inside the detection chassis. Then the sample placement rack moves outward. Then the lifting seat arranged at the center can be pressed down, so that it pushes the first racks evenly arranged on the side to press down. Then the second rack is driven to rise through the transmission gear meshed on one side, and the externally fixedly installed lifting frame is jacked up. The ejecting rod fixedly installed at the upper end jacks up the sample tube, which is convenient for the operator to take out the sample from the upper end of the positioning frame and then put it into the detection part at the upper end for detection. It is convenient to take and detect the sample tube, with simple operation and convenient use. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the sample placement rack of an embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the positioning rack of an embodiment of the present utility model.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the positioning rack of an embodiment of the present utility model.

[0023] Figure 5 It is a schematic diagram of the transmission structure of the lifting seat of an embodiment of the present utility model.

[0024] Figure 6 For an embodiment of the present utility model Figure 4 The enlarged structure schematic diagram at position A.

[0025] Figure 7 For an embodiment of the present utility model Figure 4 The enlarged structure schematic diagram at position B.

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the lifting seat of an embodiment of the present utility model.

[0027] Figure 9 It is a schematic diagram of the structure at the lower end of the moving seat of an embodiment of the present utility model.

[0028] Description of the drawings: 100, detection chassis; 110, detection part; 120, rotating screw; 200, sample placement rack; 210, moving seat; 211, moving rack; 212, transmission block; 220, positioning rack; 221, first rack body; 222, second rack body; 223, third rack body; 224, positioning hole; 230, lifting rack; 231, ejecting rod; 240, lifting seat; 241, lifting spring; 242, first rack; 243, second rack; 244, transmission gear; 250, fixed seat; 260, rotating part; 261, rotating gear; 262, telescopic rack; 263, telescopic head. Detailed implementation manners

[0029] In the following text, only some exemplary embodiments are simply described. As can be recognized by those skilled in the art, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of 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 operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] To better understand the purpose, structure, and function of the present invention, the following further describes in detail an ion chromatograph for batch sampling of the present invention with reference to the drawings.

[0035] Such as Figures 1 - 9As shown in the figure, an embodiment of the utility model provides an ion chromatograph for batch sample injection, which includes a detection chassis 100 for installing a quantitative liquid injection device to facilitate the addition of samples. A detection unit 110 is provided at the upper end of the detection chassis 100 for detecting the samples, and a sample placement rack 200 is movably installed inside the lower end of the detection chassis 100. The sample placement rack 200 is movably installed inside a cavity opened at the lower end of the detection chassis 100.

[0036] The sample placement rack 200 includes a positioning rack 220 for positioning and supporting sample tubes and a moving seat 210 installed at the lower end for driving the positioning rack 220 arranged at the upper end to move and position. A lifting rack 230 for jacking up the sample tubes placed at the upper end for convenient taking is movably installed at the lower end of the positioning rack 220. A plurality of ejector rods 231 for extending and jacking up the sample tubes at the upper end are evenly arranged at the upper end of the lifting rack 230, and the ejector rods 231 are matched with the positions of the positioning holes 224.

[0037] A fixing seat 250 for supporting the lifting rack 230 is movably installed inside the lifting rack 230. The positioning rack 220 is fixedly installed on the upper surface of the fixing seat 250 through a connecting rod. The fixing seat 250 is fixedly installed in the inner cavity opened at the center of the moving seat 210, and a lifting seat 240 for pushing the lifting rack 230 to perform lifting adjustment is movably installed at the upper end of the fixing seat 250.

[0038] A plurality of first racks 242 for pushing the lifting rack 230 to perform lifting movement are evenly arranged at the lower end of the lifting seat 240. A second rack 243 for pushing the lifting rack 230 to move is fixedly installed inside the lifting rack 230. A transmission gear 244 for transmission is meshed and installed in the middle of the first rack 242 and the second rack 243. Both sides of the transmission gear 244 are movably installed inside the fixing seat 250 through bearings, and the second rack 243 is slidably installed inside a slot opened at the side of the fixing seat 250.

[0039] When adding samples to the sample placement rack 200, samples are filled through the liquid adding device inside the detection chassis 100. Then, the sample placement rack 200 moves outward. After that, the lifting seat 240 provided at the center can be pressed down, so that it pushes the first racks 242 evenly arranged on the side to press down. Then, the transmission gear 244 meshed on one side drives the second rack 243 to rise, jacking up the externally fixedly installed lifting rack 230. The ejector rods 231 fixedly installed at the upper end jack up the sample tubes, facilitating the operator to take out the samples from the upper end of the positioning rack 220 and then put them into the upper detection unit 110 for detection. It is convenient to take and detect the sample tubes, with simple operation and convenient use.

[0040] Among them, the model of the liquid adding device can be AS-3016C, which has the characteristics of intelligence and high efficiency and can perform quantitative intelligent feeding.

[0041] The positioning frame 220 includes a first frame body 221, a second frame body 222, and a third frame body 223 for positioning and supporting the sample tube. Positioning holes 224 for placing the sample tube are evenly opened at the upper ends of the first frame body 221, the second frame body 222, and the third frame body 223. The positioning holes 224 of the third frame body 223 are smaller than those of the first frame body 221 and the second frame body 222. The sample tube can be limited by the positioning holes 224 opened at the upper ends of the first frame body 221 and the second frame body 222, and the positioning holes 224 of the third frame body 223 are smaller, which can limit and support the lower semi-cylindrical body of the sample tube, avoid the sample tube from tilting and slipping, and facilitate positioning.

[0042] A silica gel ring can be adhesively installed inside the positioning hole 224 for protecting and limiting the sample tube, playing a role in anti-slip positioning.

[0043] The upper end of the ejector rod 231 is arranged in a concave shape for limiting the lower end of the sample tube to prevent slipping, and facilitating the support of the lower end of the sample tube when the ejector rod 231 is lifted.

[0044] The moving seat 210 is composed of two groups of shells. A stepping motor is installed inside the lower shell, and the output end of the stepping motor is connected to the rotating shell installed at the upper end. The positioning frame 220 and the fixed seat 250 are arranged inside the upper shell. During the process of adding or sampling samples, the stepping motor can drive the parts arranged at the upper end to rotate according to the settings, which can facilitate the liquid injection operation of the liquid adding device and also facilitate the personnel to take the sample tube.

[0045] The lower end of the lifting seat 240 is in a frustum shape and is movably installed inside the through groove opened in the middle of the fixed seat 250. A lifting spring 241 for pushing the lifting seat 240 to rebound is connected to the lower end of the lifting seat 240. The lower end of the lifting spring 241 is installed on the upper surface of the moving seat 210. The frustum-shaped lifting seat 240 is convenient for sliding inside the through groove of the fixed seat 250. After pressing down the lifting seat 240 to lift the sample tube, the lifting spring 241 pushes the lifting seat 240 upward to reset it, facilitating repeated operations.

[0046] Inside the lifting seat 240, a rotating part 260 for positioning the lifting seat 240 is movably installed. The rotating part 260 includes a rotating gear 261 for connecting to the outside and telescopic racks 262 meshingly installed on both sides of the rotating gear 261 for transmission. At the ends of the telescopic racks 262, telescopic heads 263 for fixing the lifting seat 240 are provided. The size and position of the telescopic heads 263 match those of the positioning grooves formed in the inner cavity of the fixed seat 250. The central axis of the rotating gear 261 is connected to a shaft body that can perform rotational operations. On one side of the telescopic rack 262, a return spring for pushing and rebounding is connected.

[0047] When pressing down the lifting seat 240, the handle fixedly installed at the upper end can be rotated, thereby driving the rotating gear 261 to rotate, driving the telescopic racks 262 installed on both sides to move, the telescopic heads 263 installed on both sides retract. After moving to the bottom, release the handle, and the telescopic heads 263 are pushed out by the return spring and stuck inside the notch formed on the inner side of the fixed seat 250, thereby temporarily fixing the lifting seat 240. After taking the item, rotate again, the lifting spring 241 jacks up and resets, which is convenient for adjustment and convenient for positioning the lifting seat 240.

[0048] At the lower end of the moving seat 210, a moving frame 211 for supporting it is fixedly installed. On one side of the lower end of the moving frame 211, a transmission block 212 for driving the upper moving seat 210 to move is fixedly installed. At the bottom of the detection chassis 100, a rotating screw 120 for driving the transmission block 212 to move is movably installed. The rotating screw 120 passes through and is installed in the transmission block 212 and is in threaded transmission with the transmission block 212. When it is necessary to move the moving seat 210 to the outside of the detection chassis 100 for operation, the control device controls the driving device, and the motor and pulley drive the rotating screw 120 to rotate, thereby pushing the sample placement rack 200 installed at the upper end to move outward, which is convenient for taking operations. At the same time, the motor drive can control the position, which is convenient for positioning and convenient for the liquid adding device to position, with higher accuracy.

[0049] The working principle of an ion chromatograph for batch sample injection: When adding samples to the sample placement rack 200, the liquid adding device inside the detection chassis 100 is used to add samples. Then the sample placement rack 200 moves outward. Then, the lifting seat 240 provided at the center can be pressed down, so that it pushes the first rack 242 evenly arranged on the side to press down. Then, through the transmission gear 244 meshingly installed on one side, the second rack 243 is driven to rise, jacking up the externally fixedly installed lifting frame 230. The ejector rod 231 fixedly installed at the upper end jacks up the sample tube upward, which is convenient for the operator to take out the sample from the upper end of the positioning rack 220 and then put it into the upper detection part 110 for detection, which is convenient for taking and detecting the sample tube, with simple operation and convenient use.

[0050] It can be understood that the present utility model is described by means of some embodiments. Those skilled in the art will know that without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. An ion chromatograph for batch sample injection, characterized in that, Comprising: A detection chassis, and a sample placement rack movably installed inside the lower end of the detection chassis, the sample placement rack being movably installed inside a cavity opened at the lower end of the detection chassis; A sample placement rack, which includes a positioning rack and a moving seat for moving and positioning the positioning rack installed at the lower end, and a lifting rack is movably installed at the lower end of the positioning rack.

2. The ion chromatograph for batch sampling according to claim 1, characterized in that, The positioning rack includes a first rack body, a second rack body, and a third rack body for positioning and supporting sample tubes. Positioning holes are uniformly opened at the upper ends of the first rack body, the second rack body, and the third rack body. The positioning holes of the third rack body are smaller than the positioning holes of the first rack body and the second rack body.

3. The ion chromatograph for batch injection according to claim 2, characterized in that, Ejecting rods are uniformly arranged at the upper end of the lifting rack, and the ejecting rods are matched with the positions of the positioning holes.

4. An ion chromatograph for batch sample injection according to claim 3, characterized in that, The upper end portion of the ejecting rod is arranged in a concave shape.

5. An ion chromatograph for batch sample introduction according to claim 4, characterized in that, A fixed seat is movably installed inside the lifting rack. The positioning rack is fixedly installed on the upper surface of the fixed seat through a connecting rod. The fixed seat is fixedly installed in an inner cavity opened at the center of the moving seat, and a lifting seat is movably installed at the upper end of the fixed seat.

6. An ion chromatograph for batch sampling according to claim 5, characterized in that, First racks are uniformly arranged at the lower end of the lifting seat. A second rack is fixedly installed inside the lifting rack. A transmission gear is meshed and installed in the middle of the first rack and the second rack. Both sides of the transmission gear are movably installed inside the fixed seat through bearings. The second rack is slidably installed inside an empty groove opened at the side of the fixed seat.

7. An ion chromatograph for batch sampling according to claim 6, characterized in that, The moving seat is composed of two groups of shells. A stepping motor is installed inside the lower shell, and the output end of the stepping motor is connected to a rotating shell installed at the upper end. The positioning rack and the fixed seat are arranged inside the upper shell.

8. An ion chromatograph for batch sample injection according to claim 7, characterized in that, The lower end of the lifting seat is in a frustum shape and is movably installed inside a through groove opened in the middle of the fixed seat. A lifting spring is connected to the lower end of the lifting seat, and the lower end of the lifting spring is installed on the upper surface of the moving seat.

9. An ion chromatograph for batch sample introduction according to claim 8, characterized in that, A rotating part is movably installed inside the lifting seat. The rotating part includes a rotating gear and telescopic racks meshed and installed on both sides of the rotating gear for transmission. Telescopic heads are arranged at the ends of the telescopic racks. The sizes and positions of the telescopic heads are matched with the positioning grooves opened in the inner cavity of the fixed seat. A return spring for pushing and rebounding is connected to one side of the telescopic rack.

10. An ion chromatograph for batch sample introduction according to claim 9, characterized in that, A moving frame is fixedly installed at the lower end of the moving seat. A transmission block is fixedly installed on one side of the lower end of the moving frame. A rotating screw rod is movably installed at the bottom of the detection chassis. The rotating screw rod passes through the transmission block and is in threaded transmission with the transmission block.

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