Sample injector and chromatographic detection equipment

Abstract

The utility model provides a sample injector and chromatographic detection equipment, the sample injector comprises a tray assembly, an inner cavity of the tray assembly is provided with a plurality of sample hole sites, and the sample hole sites are configured to be used for placing sample bottles; and the upper cover assembly is arranged at the upper end of the tray assembly and is used for covering the sample bottle or exposing the sample bottle at the upper end of the tray assembly. The upper cover assembly is arranged at the upper end of the tray assembly, when a sample bottle needs to be placed in a sample hole site of the tray assembly, the upper cover assembly is removed from the upper end of the tray assembly, and after the sample bottle is well placed, the upper cover assembly is placed at the upper end of the tray assembly, so that the sample bottle is covered; the pollution of pollutants in a laboratory environment to a sample in the sample bottle can be reduced, and the data accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chromatographic analysis, in particular to a sample injector and a chromatographic detection device. BACKGROUND

[0002] The automatic sample injector is an important instrument in chemical analysis experiments, which can avoid the problems of inaccurate quantification, errors in long-term repetitive work, and low work efficiency caused by manual sample injection.

[0003] In related technologies, the automatic sample injector is often affected by the environment during experiments, resulting in inaccurate experimental data. Therefore, there is an urgent need for a sample injector to solve the above technical problems. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a sample injector and a chromatographic detection device that can reduce the pollution of pollutants in the laboratory environment to the sample and improve data accuracy.

[0005] The present application provides a sample injector, which comprises a tray assembly, the inner cavity of which is configured with a plurality of sample hole positions configured for placing sample bottles; and an upper cover assembly configured at the upper end of the tray assembly for covering the sample bottles or exposing the sample bottles at the upper end of the tray assembly.

[0006] In the above implementation process, the upper cover assembly is arranged at the upper end of the tray assembly. When it is necessary to place sample bottles in the sample hole positions of the tray assembly, the upper cover assembly is removed from the upper end of the tray assembly. After the sample bottles are placed, the upper cover assembly is placed at the upper end of the tray assembly to cover the sample bottles, which can reduce the pollution of pollutants in the laboratory environment to the samples in the sample bottles and improve data accuracy.

[0007] In some embodiments, the upper cover assembly is configured with a first connecting portion, the tray assembly is configured with a second connecting portion, and the first connecting portion is rotationally connected with the second connecting portion.

[0008] In the above implementation process, the first connecting portion is connected with the second connecting portion to cover the tray assembly with the upper cover assembly, which can reduce the pollution of pollutants in the laboratory environment to the samples in the sample bottles and improve data accuracy. At the same time, when placing the sample bottles, only the upper cover assembly needs to be lifted, which reduces the weight of the operator when placing the sample bottles, thereby reducing the operation difficulty.

[0009] In some embodiments, the first connecting portion comprises a connecting hole, the second connecting portion comprises a positioning pin, and the connecting hole is configured to accommodate at least part of the positioning pin.

[0010] In the implementation process, the rotating connection of the upper cover assembly and the tray assembly is realized through the cooperation of the positioning pin and the connecting hole, which is conducive to reducing the pollution of the sample in the sample bottle by the pollutants in the environment, and also reduces the weight of the sample bottle lifted by the operator during placement, thereby reducing the operation difficulty.

[0011] In some embodiments, the upper cover assembly comprises an upper cover body and a hand holding body, and the upper cover body is configured with the hand holding body. By arranging the hand holding body on the upper cover body, the operator only needs to exert a force on the hand holding body to realize the movement of the upper cover body relative to the tray assembly, which is simple and fast, and can also realize the covering effect of the sample bottle, thereby avoiding the pollution of the sample in the sample bottle by the pollutants in the environment.

[0012] In some embodiments, the tray assembly comprises a tray cover and a sample tray, and the tray cover is configured with a containing cavity configured to contain the sample tray, and the sample tray is configured to place the sample bottle.

[0013] In the implementation process, the sample tray is arranged in the containing cavity of the tray cover, and the tray cover can realize the covering of the sample bottle by cooperating with the upper cover assembly, thereby avoiding the pollution of the sample in the sample bottle by the pollutants in the environment, and the operator only needs to move the upper cover assembly when placing the sample bottle, without moving the tray cover, thereby reducing the weight to be lifted before placing the sample bottle and reducing the operation difficulty.

[0014] In some embodiments, the tray assembly further comprises an adapter connected to the outer edge of the tray cover.

[0015] In the implementation process, the tray cover can be fixed through the adapter, thereby avoiding friction and collision between the tray cover and other components of the sample injector when the sample bottle needs to be placed, reducing the wear of the components, improving the service life, and reducing the operation difficulty.

[0016] In some embodiments, the sample injector further comprises a case arranged at the bottom of the tray assembly, and the case is connected to the tray assembly. By fixing the tray assembly to the case, the operator only needs to lift the upper cover assembly when placing the sample bottle, thereby avoiding the movement of the tray assembly relative to the case, and avoiding the friction and collision between the tray assembly and the case.

[0017] In some embodiments, the sample injector further comprises a fixing structure connected to one side of the case. By arranging the fixing structure on the case, the upper cover assembly of the tray assembly can be adapted, thereby reducing the operation area of the upper cover assembly.

[0018] In some embodiments, the sample injector further comprises a sample injection assembly, the sample injection assembly comprising a dustproof structure and the sample bottle, the dustproof structure being connected to the machine case, and the dustproof structure being configured to accommodate the sample bottle. By accommodating the sample bottle through the dustproof structure, the dustproof structure can prevent dust from entering the sample bottle before the sample bottle is placed in the sample hole of the tray assembly, thereby improving the protection of the sample bottle and reducing the pollution of the sample in the sample bottle by pollutants in the environment, thereby improving the accuracy of experimental data.

[0019] In a second aspect, the present application further provides a chromatographic detection device comprising the sample injector according to any one of the above.

[0020] Since the chromatographic detection device provided by the second aspect comprises the sample injector, the chromatographic detection device has all the technical effects of the sample injector, which will not be described here.

[0021] Other features and advantages of the present application will be described in the following description, or can be inferred or determined without doubt from the description, or can be known by implementing the above-mentioned technologies of the present application.

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Fig. 1 The structure schematic diagram of the sample injector provided by the embodiments of the present application is shown in the following figure:

[0025] Fig. 2 The schematic diagram of the separation of the upper cover assembly of the sample injector provided by the embodiments of the present application from the tray assembly is shown in the following figure:

[0026] Fig. 3 The structure schematic diagram of the sample injector provided by the embodiments of the present application is shown in the following figure:

[0027] DRAWINGS

[0028] 100, tray assembly; 101, tray cover; 102, sample tray; 103, adapter; 200, upper cover assembly; 201, upper cover body; 202, hand holding body; 300, machine case; 400, fixing structure; 500, sample injection assembly. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with 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. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] In the present application, the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like are based on the orientations or positional relationships shown in the drawings. These terms are mainly used for better describing the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, the above-mentioned partial terms may, in addition to being used to indicate the orientation or positional relationship, also be used to indicate other meanings, for example, the term "upper" may, in some cases, also be used to indicate a certain dependent relationship or connection relationship. Those skilled in the art can understand the specific meanings of these terms in the present application according to the specific circumstances.

[0032] In addition, the terms "mount", "set", "provided with", "connect", "connected" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or a monolithic structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0033] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "multiple" is two or more. Embodiments

[0034] The existing automatic sample injection device is mainly divided into two types, one is a fixed tower type automatic sample injector, and the other is a rotating tower type automatic sample injector. The sample injection disc of the fixed tower type automatic sample injector is an arc formed by cutting a part of a circle. The chromatographic injection port is vertically below the sample injection module. The sample injection module can move vertically up and down relative to the chromatographic injection port. The sample injection disc can rotate relative to its center. The working process mainly includes the following steps. First, the position of the sample to be detected and analyzed in the sample disc is rotated to the vertically corresponding position of the sampler in the sample injection module. The sample injection module moves downward, the sampler samples, then the sample injection module moves slightly upward, the sampler leaves the sample disc, the sample disc rotates along its center, stops rotating after the non-circular edge is rotated to the original sampling position, and makes the up and down movement path of the sample injection module pass through. Then, the sample injection module moves downward and sends the sample taken by the sampler into the chromatographic injection port. Finally, the sample injection module is reset. Although the sample injection module only moves vertically up and down, the sampler can be accurately aligned with the chromatographic injection port, and the positioning accuracy is improved.

[0035] The sample injection disc of the rotating tower type automatic sample injector is circular. A plurality of sample positions are arranged on the sample injection disc. The sample injection module can rotate along the rotation axis. The trajectory of the rotation and the circle formed by each sample position on the sample disc intersect. The working process mainly includes the following steps. First, the sample injection module rotates. When the sampler in the sample injection module reaches above a sample position, the rotation stops. Then, the sample injection module moves downward, the sampler samples, then the sample injection module moves slightly upward, the sampler leaves the sample disc, the sample injection module rotates again, and when the sampler is vertically aligned with the chromatographic injection port, the sample injection module moves downward and sends the sample taken by the sampler into the chromatographic injection port. Finally, the sample injection module is reset. The automatic sample injector with this structure can sample each sample position by the cooperation of the sample disc, and meets the demand of processing a large number of samples.

[0036] The sample injector provided in the present application includes but is not limited to the rotating tower type automatic sample injector, which has the characteristics of convenience and high efficiency. The circular disc automatic sample injector with open sample bottles on the market is not equipped with a sample tray cover. When the sample bottles are placed and operated, the sample tray cover is complex to handle.

[0037] In view of this, as shown in Figs. 1-3 The present application provides a sample injector, which comprises a tray assembly 100, a plurality of sample hole positions are arranged in the inner cavity of the tray assembly 100, and the sample hole positions are configured to place sample bottles; and an upper cover assembly 200, which is arranged at the upper end of the tray assembly 100 and is used to cover the sample bottles or expose the sample bottles at the upper end of the tray assembly 100.

[0038] Exemplary, the sample hole sites are arranged along the periphery of the tray assembly 100, and a plurality of sample hole sites can be arranged on different circular arcs with different hole diameters, and the arrangement number of the sample hole sites is not specifically limited. In order to compress the rotation angle of the sample loading and washing needle process, reduce the loss of multi-rotation motor and transmission components, and increase the reliability, two washing needle positions can be arranged on the tray assembly 100, and the two washing needle positions can be arranged on the opposite sides of the tray assembly 100.

[0039] Among them, for the connection mode of the upper cover assembly 200 and the tray assembly 100, the upper cover assembly 200 can be rotatably connected to the tray assembly 100, or the disassembly connection mode can be used, for example, when the sample bottle needs to be placed, the upper cover assembly 200 is directly removed from the upper end of the tray assembly 100, and the principle can be similar to the pot cover and the like.

[0040] In the above implementation process, the upper cover assembly 200 is arranged at the upper end of the tray assembly 100, when the sample bottle needs to be placed in the sample hole site of the tray assembly 100, the upper cover assembly 200 is removed from the upper end of the tray assembly 100, and after the sample bottle is placed, the upper cover assembly 200 is placed at the upper end of the tray assembly 100, which realizes the covering of the sample bottle, reduces the pollution of the pollutants in the laboratory environment to the sample in the sample bottle, and improves the data accuracy.

[0041] In some embodiments, the upper cover assembly 200 is provided with a first connecting part, the tray assembly 100 is provided with a second connecting part, and the first connecting part and the second connecting part are rotatably connected. Among them, for the rotation setting between the first connecting part and the second connecting part, the first connecting part and the second connecting part can be directly rotated, or external structural parts can be used to realize the connection of the two, such as hinges and the like.

[0042] In the above implementation process, the first connecting part and the second connecting part are connected, which realizes the covering of the upper cover assembly 200 to the tray assembly 100, reduces the pollution of the pollutants in the laboratory environment to the sample in the sample bottle, and improves the data accuracy. At the same time, when placing the sample bottle, only the upper cover assembly 200 needs to be lifted, which reduces the weight of the operator when placing the sample bottle, thereby reducing the operation difficulty.

[0043] In some embodiments, the first connecting part comprises a connecting hole, and the second connecting part comprises a positioning pin, the connecting hole being configured as a structure for accommodating at least part of the positioning pin. Of course, in other embodiments, the first connecting part can be provided in the form of a positioning pin, and the second connecting part can be provided in the form of a connecting hole, as long as the rotating connection of the upper cover assembly 200 relative to the tray assembly 100 can be achieved, which falls within the protection scope of the present application.

[0044] In the above implementation process, the rotating connection of the upper cover assembly 200 relative to the tray assembly 100 is achieved through the cooperation and connection of the positioning pin and the connecting hole, which is beneficial to reduce the pollution of the sample in the sample bottle by the pollutants in the environment, and also can reduce the weight of the sample bottle lifted by the operator during the operation, thereby reducing the operation difficulty.

[0045] As shown in Figs. 1-3 The upper cover assembly 200 comprises an upper cover body 201 and a hand holding body 202, the upper cover body 201 is configured with the hand holding body 202, the hand holding body 202 comprises but is not limited to a special-shaped hole, which can be a fan-shaped hole, a circular hole, a polygonal hole, etc., the special-shaped hole penetrates the upper cover body 201 in the up-down direction, of course, in other embodiments, the hand holding body 202 can be provided in a structure similar to a door handle, etc. By providing the hand holding body 202 on the upper cover body 201, the operator only needs to exert a force on the hand holding body 202, and the movement of the upper cover body 201 relative to the tray assembly 100 can be achieved, which is simple and fast, and can also achieve the effect of covering the sample bottle, thereby avoiding the pollution of the sample in the sample bottle by the pollutants in the environment.

[0046] In some embodiments, the tray assembly 100 comprises a tray cover 101 and a sample tray 102, the tray cover 101 is configured with an accommodating cavity, the accommodating cavity is configured to accommodate the sample tray 102, and the sample tray 102 is configured to place the sample bottle.

[0047] In the above implementation process, the sample tray 102 is arranged in the accommodating cavity of the tray cover 101, and the tray cover 101 can achieve the covering effect of the sample bottle by cooperating with the upper cover assembly 200, thereby avoiding the pollution of the sample in the sample bottle by the pollutants in the environment, and the operator only needs to move the upper cover assembly 200 when placing the sample bottle, without moving the tray cover 101, thereby reducing the weight of the sample bottle lifted before placing the sample bottle, and reducing the operation difficulty.

[0048] Please refer to Figs. 1-3The tray assembly 100 further comprises an adapter 103 connected to the outer edge of the tray cover 101, wherein the adapter 103 comprises but is not limited to a machined part or a sheet metal part, and the adapter 103 can be fixed to the bottom of the tray cover 101 by welding or screws.

[0049] In the above implementation process, the tray cover 101 can be fixed by the adapter 103, so as to avoid friction and collision between the tray cover 101 and other components of the sample injector when the sample bottle is placed, reduce the wear of the components, improve the service life, and reduce the operation difficulty.

[0050] In some embodiments, the sample injector further comprises a cabinet 300 arranged at the bottom of the tray assembly 100, and the cabinet 300 is connected to the tray assembly 100, that is, the tray cover 101 of the tray assembly 100 is connected to the cabinet 300 through the adapter 103, and the fixing mode of the adapter 103 and the cabinet 300 can be fixed by screws or welding. By fixing the tray assembly 100 to the cabinet 300, the operator only needs to lift the upper cover assembly 200 when placing the sample bottle, so as to avoid the movement of the tray assembly 100 relative to the cabinet 300, thereby avoiding the friction and collision between the tray assembly 100 and the cabinet 300.

[0051] In some embodiments, the sample injector further comprises a fixing structure 400 comprising a "pocket" structure, the fixing structure 400 is connected to one side of the cabinet 300, and the fixing structure 400 can be provided at least one, for example, in the present application, the fixing structure 400 is provided with two, and the two fixing structures 400 are located on the same side of the cabinet 300. By providing the fixing structure 400 on the cabinet 300, the upper cover assembly 200 of the tray assembly 100 can be adapted, and the operation of the upper cover assembly 200 can be reduced.

[0052] In some embodiments, the sample injector further comprises a sample injection assembly 500 comprising a dustproof structure and the sample bottle, and the dustproof structure is connected to the cabinet 300 and configured to accommodate the sample bottle. By accommodating the sample bottle by the dustproof structure, the dustproof of the sample bottle before being placed in the sample hole of the tray assembly 100 can be realized, the protection of the sample bottle is improved, the pollution of the pollutants in the environment to the sample in the sample bottle is reduced, and the accuracy of the experimental data is improved.

[0053] In a second aspect, the present application also provides a chromatographic detection device comprising the sample injector as described above.

[0054] The chromatographic detection device provided in the second aspect comprises a sample injector, and therefore has all the technical effects of the sample injector, which will not be repeated here.

[0055] In all the embodiments of the present application, "large", "small" are relative, "more", "less" are relative, "upper", "lower" are relative, and the description of such relative terms will not be repeated in the embodiments of the present application.

[0056] It should be understood that the "in the present embodiment", "in the present embodiment" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in the present embodiment", "in the present embodiment" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0057] In various embodiments of the present application, it should be understood that the size of the serial number of the above processes does not mean the inevitable sequence of execution order, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A sample injector characterized by, The application relates to a sample feeder, comprising: a tray assembly, an inner cavity of which is configured with a plurality of sample hole positions configured for placing sample bottles; an upper cover assembly configured at an upper end of the tray assembly for covering or exposing the sample bottles at the upper end of the tray assembly.

2. The sample injector of claim 1, wherein The upper cover assembly is configured with a first connecting part, and the tray assembly is configured with a second connecting part, and the first connecting part is rotationally connected with the second connecting part.

3. The sample injector of claim 2, wherein, The first connecting part comprises a connecting hole, and the second connecting part comprises a positioning pin, and the connecting hole is configured for accommodating at least part of the structure of the positioning pin.

4. The sample injector of claim 1, wherein The upper cover assembly comprises an upper cover body and a hand holding body, and the upper cover body is configured with the hand holding body.

5. The sample injector of claim 1, wherein The tray assembly comprises a tray cover and a sample tray, the tray cover is configured with an accommodating cavity configured for accommodating the sample tray, and the sample tray is configured for placing the sample bottles.

6. The sample injector of claim 5, wherein, The tray assembly further comprises an adapter connecting an outer edge of the tray cover.

7. The sample injector of claim 1 or 6, wherein The sample feeder further comprises a machine box configured at a bottom of the tray assembly and connected with the tray assembly.

8. The sample injector of claim 7, wherein, The sample feeder further comprises a fixing structure connected with one side of the machine box.

9. The sample injector of claim 7, wherein, The sample feeder further comprises a sample feeding assembly comprising a dustproof structure and the sample bottles, the dustproof structure is connected with the machine box, and the dustproof structure is configured for accommodating the sample bottles.

10. A chromatographic detection apparatus, characterized by The application further relates to a sample feeder comprising any one of the sample feeders according to claims 1-9.

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